What's New at ISRM and Ongoing Blog

Most recent Activities, Gifts, Edits and Additions
of Specimens to the Galleries with Accession Numbers

• 1st hour use link: meet.google.com/vwc-bqsf-jvg
  
• 2nd hour use link: meet.google.com/zwe-hwir-atd
  
• 3rd hour use link: meet.google.com/ief-ppjw-gsi
  

• 1st hour use link: bit.ly/isrm-meet1
  
• 2nd hour use link: bit.ly/isrm-meet2
  
• 3rd hour use link: bit.ly/isrm-meet3
  

NEW! ISRM Slide Rule Instructions Library is now published on Amazon.
Thirty-six 550 page Volumes of the popular models with more on the way.

Download the Table of Contents of all the Volumes.

YYYY.MM.DD-## - Gallery - Description of Edits, Additions[Replacements], Gifts or Donations.

• 23.09.13.01 - K&E 4053 7-foot Demonstration (Missing Cursor)
• 23.09.13.02 - Pickett 4-foot Demonstration
• 23.09.13.03 - Welch 4-foot Demonstration

• 23.08.02.01/M - K&E 4181-3 Plastic Duplex Decilog sn407483 Orange sleeve - to gallery
• 23.08.02.02/M - K&E 4181-1 Plastic Pocket Duplex Decilog sn323805 green case red inv scales, blk K&E logo new variant - to gallery

• 23.07.18.01 - K&E 4153-1 sn004361 pocket mannheim, green sleeve - Duplicate
• 23.07.18.02 - Faber-castell 61/87 pocket dc57 "pacific pumps, inc" promo - to faber gallery
• 23.07.18.03 - Post 1461 Pocket Versalog dcDJ 1953 bamboo on edges - to post gallery
• 23.07.18.04 - Post Versalog 1460 sn216279, Leather sleeve w/loop, name on flap Mike Grady - duplicate
• 23.07.18.05 - Post 1459 Versatrig Black leather sleeve - Duplicate
• 23.07.18.06 - K&E 4081-3 LogLogDuplexDecitrig sn059231 inlaid strip on edges, has unknown natural replica cursor blocks, Dietzgen sleeve - duplicate
• 23.07.18.08 - K&E 4071-3 sn252001 duplex polyphase NIC K&E logo, c1956 orange sleeve - duplicate
• 23.07.18.09 - Faber-Castell 111/54 Darmstadt dc661 back instructions, clear case - replace S161

• 23.07.15.01 - Pickett N600-ES - Duplicate
• 23.07.15.02 - Concise Sama & Etani CTS-552, c1966. OEM Gulf Engineering Co. (Marked P.J Pancio) - duplicate

• 23.07.14.01 - K&E 4080-3 sn712743. needs cleaning. Name inside flap. to gallery w/bio
• 23.07.14.02 - Pickett N4-ES Vector type Log Log, Red Inverse scales, Curved braces, round black logo. duplicate
• 23.07.14.03 - Pickett N4-ES Vector type Log Log, Black inverse scales, Square braces, round black logo. to gallery w/bio
• 23.07.14.xx - 4 Sterling mannheims for gifts to kids, 1 scrap

• 23.07.14.01 - Received Hemmi 259 Expert Mechanical Engineer dcDA 1953 from Paul Ross. Missing cursor.. - Duplicate installed new cursor
  
• 23.07.14.02 - Hemmi Mannheim Model 1 Variation with rear windows on end (open). To gallery
• 23.07.14.03/M - Gilson Midget Manual rebranded as Bruning - duplicate
• 23.07.14.04/M - K&E 4150-1 Pocket slide rule in box with manual - Duplicate
• 23.07.14.05 - K&E 4070-3_Polyphase Duplex Trig sn634178 leathe sleeve marked Sam C. Fry - To gallery
• 23.07.14.06 - C-Thru S889 Log Log Duplex - to Gallery
  2023.07.13 - Sent all of ISRM's 360+ electronic calculators ( 11 boxes, 200+ pounds)to Scott Reynolds of Vintage Calculators, Hemet, Ca. Hopefilly he can sell some and give us a commission.
  2023.07.09 - Finished itemizing all the electronic calculators acquired in the last 10 years to support the gallery and new book. They are being packed up to hopefully sell wholesale to a dealer or donate to a museum.
  2023.07.01 - Received a K&E 4185D Magnifier and a Dietzgen 1781-30J magnifier from Ned Hurle of Jensen Beach. Florida.
  2023.07.01 - Received author's hardcover copy of POST VERSALOG II Slide Rule Instruction Manual and Applied Text as published on Amazon by ISRM.
  2023.06.30 - Pickett - Added Model 1 1946, 600 clamshell braces, 200rounded braces, 1006 curved braces convex lens.
  2023.06.30 - Japan - Added Hope 93 Duplex stle Mannheim. Gifts of Terry Kirkpatrick. of Florida.
  2023.06.30 - Rocoh - Added Alvin Elite 1157 Vector Log Log, Ricoh 105 Mannheim. Gifts of Terry Kirkpatrick. of Florida.
  2023.06.30 - Faber - added 111/54 w/no scale labels. Gift of Terry Kirkpatrick. of Florida.
  2023.06.26 - MiscUSA - Added[Replaced] The Spirule Co., Whittier, California. for North American Aviation
  2023.06.26 - Slide Rule Loaner Program - Shipped 25 Fedra LogLog to Brad Elliot, Moorhead University, in Kentucky.
  2023.06.24 - Misc_USA - Added Shure Bros catagory, Ohmite slide rule, Perrygraf Circular V4. Gift of Sara Beagan.
  2023.06.24 - Military - Added US Armed Forces Relibility Computer, RCL Slide Rule, Muclearule. Belonged to Waliiam C. Miller, Ph.D , Phyicist at Los Alamos atomic bomb.with bio and photos. 2023.06.24 - KE_Standard - Added 4081-3 1955 Belonged to Waliiam C. Miller, Ph.D , Phyicist at Los Alamos atomic bomb.with bio and photos.
  2023.06.23 - Scanned a dozen slide rules from the Terry Kirkpatrick collection.
  2023.06.22 - Published a special edition reprint of the Post Versalog II Slide Rule Instruction Manual and Applied Text: Annotated Reprint. in a 5.5 x 8.5 inch format 209 pages. Note that this stand-alone manual is also in Post Volume 4.
  2023.06.22.01 - Received/Posted Alvin Elite 1157 Vector dcJ.K-3 belonging to Howard Levitan of San Jose, California. To gallery, replace REF.
  2023.06.19 - Published in full color on Amazon: ELECTRONIC SLIDE RULE CALCULATORS 1972-1979 A Catalog of What Killed an Industry. with a chapter by Rob James.
  2023.06.09 - Received slide rule donations from Dain Wetterstrand of baskin Ridge, NJ.
  
  • 23.06.09.01/M - Post Versalog 1460 sn124602 dcKL blue COS - to gallery replace S078 Belonged to Dain Wetterstrand
  • 23.06.09.02 - Post 1446 1936preWWII prod/quot labels Belonged to Dain Wetterstrand's father, David Bogue - duplicate
  • 23.06.09.03/M - Dietzgen Gilson midget w/ manual Belonged to Dain Wetterstrand's husband William, PhD. Univ of Wisconsin. - duplicate
  2023.06.08 - Hemmi - redirected links to Paul Ross's Hemmi Catalogue Raisonne to https://www.sliderulemuseum.com/isrm/srtco/
  2023.06.08 - Post - redirected links to Paul Ross's POST Cross reference to https://www.sliderulemuseum.com/isrm/srtco/
  2023.06.08 - Copied and archived Paul Ross's www.SRTCO.US website into the ISRM Associates gallery for preservation.
  2023.06.02 - Received slide rule loaner set back from a school (Acumath 400's).
  2023.05.27 - Developed strategt with Dylan Thinnes on creating drop-down menus. see progress at sliderulemuseum.org
  2023.05.27 - Made progress on book "Eelctronic Slide Rules 1972-1977" up to "R" 250 pages.
  2023.05.18 - Received modest collection of slide rules belonging to Terry L. Kirkpatrick of Florida. Most have been disbursed to the slide rule loaner sets.
  
  • 23.05.18.01 - Fabar-Castell 111-54 Darmstadt dc753 no scale labels - to gallery
  • 23.05.18.02 - Aristo Charvoz Roos 0970 Multi-Log - has "R.H." on stock and R.Huff inside flap - Duplicate
  • 23.05.18.03 - Fabar-Castell 2/82 Duplex. Has in/cm scale and flat riveted braces - duplicate
  • 23.05.18.04 - Pickett & Eckel Model 600 Log Log Synchro scale, Cast end braces, flat lens, metal bars - to gallery
  • 23.05.18.05 - Pickett 1006 round black logo, curved bracesconvex lens, Vaughn Machinery Promo - to gallery
  • 23.05.18.06 - K&E 4181 pocket duplex decitrig sn100968 - duplicate
  • 23.05.18.07 - Gilson Midget 1931/1936 - duplicate
  • 23.05.18.08 - Compass 1321 - Duplicate
  • 23.05.18.09 - Post Versalog II dc UE May1970 no sn bad sleeve, - duplicate
  • 23.05.18.10 - Pickett N500-ES HiLog Black leather sleeve - Duplicate
  • 23.05.18.11 - Pickett N500-ES HiLog Black naugahyde slip sleeve sleeve - Duplicate
  • 23.05.18.12 - Hope No93 Mannheim - to gallery
  • 23.05.18.13 - Aristo 0903 Scholar Charvoz dcC631 - to gallery
  • 23.05.18.14 - Aristo Charvoz Roos 0970 Multi-Log dcHFL5 1967 - duplicate
  • 23.05.18.15 - Post 1462 Roos Duplex white braces - duplicate
  • 23.05.18.16 - Aristo 0929 Multi-Trig Charvo dc624 metal blocks - to Gallery
  • 23.05.18.17 - Post 1450 Versatrig Duplex - Duplex , Homemade sleeve. - duplicate
  • 23.05.18.18 - Ricoh 105 Mannheim dc OS-4 - to gallery
  • 23.05.18.19/M - Bruning 2398 Dual-Faced 5-inch Duplex in box, SKF on leather sleeve - Duplicate Scanned manual for AMERICAN II Volume.
  • 23.05.18.20 - K&E 4181 LogLog Duplex Decitrig Pocket sn100968 red K&E logo - duplicate
  • 23.05.18.21 - Charvoz-Roos PSR101P Plastic Stock - to gallery
  • 23.05.18.22 - Dietzgen 1738 Type-M Improved Decimal Trig Type Log Log Black naugahyde sleeve - Duplicate
  • 23.05.18.23 - Dietzgen 1757 Primatrig Tan naugahyde sleeve, ink stained - Duplicate
  • 23.05.18.24 - Pickett & Eckel Deci-point Model 1 1954 sn008796 first design - To Gallery replace S362
  • 23.05.18.25 - K&E Deci-lon 68-1100 sn138580 oorange leather sleeve (Ken Grillo on flap) - Duplicate
  • 23.05.18.26 - Lutz No. 102-S U.S. Bamboo duplex, Leather sleeve
  • 23.05.18.27 - Lutz No. 252 U.S. dc SS-10 Bamboo duplex, Leather sleeve
  • 23.05.18.28 - K&E 4070-3 polyphase duplex sn708193 - variation in markings: "Pat's 1,930,852 Pat.Pend." - To gallerry
  • 23.05.18.29 - Dietzgen 1732 Trig Type Log Log sn524275 - retrto cursor block. needs trimmed
  • 23.05.18.30 - Acu-math 1311 Log Log Decimal Trig red oval logo Marked "U.S." - duplicate
  • 23.05.18.31 - Acu-math 90A Mannheim Trig Magnesium with finger pockets "Acu Design" - duplicate
  • 23.05.18.32 - Acu-Math 900 U.S.Govt Professional Manheim. Red Oval Logo (smearing like reference image) - duplicate
  • 23.05.18.33 - Acu-math 500 - Simplex Trig - 1960 black oval logo, rounded corners, metal braces. Molded plastic cursor- duplicate of 16.06.02.03
  • 23.05.18.34 - Pickett 1010 1948 sn3D002258 thick aluminum stock, metal cursor bars, flat lens.- duplicate
  • 23.05.18.35 - K&E 9081-3 Doric Duplex LL Decitrig sn21654 Black leather sleeve - duplicate
  • 23.05.18.36 - Post (Hemmi) 1446 Pre WWII black sleeve.- duplicate
  • 23.05.18.37 - K&E 4080-3 Log Log Duplex Trig sn886105 1941. with orange sleeve marked "Herb Schramm" flab has serial number inside flap it gets separated from the slide rule - duplicate.
  • 23.05.18.38/M - Spirule - 1959 full sheet instructionsNorth American Aviation Marked as being from Bill Wehrend GC&S
  • 23.05.18.39 - Telex AL6 Aviation Computer 1976 - to Aerospace Gallery.
  • 23.05.18.40 - APR CR-6 Computer version 2 1974 yellow disk - to gallery
  • 23.05.18.41 - APR E6-B Flight Computer 1971 1978 5in diam with 10 in slide red sleeve - to gallery
  • 23.05.18.42 - Felsenthal PT Pilot's Computer 3" dia FAA-212 1970 - to gallery
  • 23.05.18.43 - SSA Glide Calcualtor Model 204.5" dia
  • 23.05.18.44 - Weems & Plath Vectormaster - to gallery
  • 23.05.18.45 - C-Thrue Proportional Scale 5" dia version 2 - to gallery
  2023.05.12 - Began writing/editing the book Electronic Slide Rule Catalogs 1977-1979. I started this project 10 years ago.
  2023.05.11 - Received gifts of slide rules and slide charts belonging to Walter Charles Miller, Ph.D. who worked on the Manhatten Projest at Los Alamos, NM. gifted by Sara M. Beagan of Saint paul, MN.
  
  • 23.05.11.01 - K&E 4081-3 LogLog Duplex Decitrig sn599366, Black sleeve.(shrunk) to gallery
  • 23.05.11.02 - Dietzgen 1776 RediRule Pocket Duplex, bround sleeve w/clip. Replaced 14.07.02.84 in archive to duplicate.
  • 23.05.11.03 - Nuclearule Nulear Instrument and Chemical Corp.1949 to gallery
  • 23.05.11.04 - Perrygraph (Ben Z. Rubin Co.) 15inch Circular Slide Rule Version 4 (1964) to gallery
  • 23.05.11.05 - Radiation Counter Laboratories Perrygraph Slide Chart 1949 to gallery
  • 23.05.11.06 - Shure Bros. Reactance Slide Rule 1942
  • 23.05.11.07 - Ohmite Ohms Law and Slide Rule 1949
  • 23.05.11.08 - Ohmite Ohms Law 1941
  2023.05.07 - Published Volume 36 Radio Electronics Slide Rule Textbooks. Hardcaover, Ppaerback and kndle digital on Amazon.com
  2023.05.05 - Received Arlton Circular slide rules, designed by Stan Arlton, Gifted by son Dave Arlton of Lite Machines, Carlsbad, California.
  
  • 23.05.05.01,02,03 - Arlton 4" Dia "The Cadet" Pocket Circular Slide Rule
  • 23.05.05.04,05,06 - Arlton 7" Dia Conversion Slide Rule
  2023.05.04 - SRM_Intro and Board of Directors - Added ISRM Future of Accessioning, Deaccessioning & Disposal (.PDF)
  2023.05.04 - Home Page - Modified to remove all the individual thumbnails for the library volumes to simplify the presentation.the page was getting too busy.
  2023.04.18-28 - Editing books for volume 36 Electrical & Radio II. Received contricutions from Steve Seale in Nashville, TN.
  2023.04.17 - Aerospace - Added GE Re-Entry Heating Slide Rule For Zero-Lift Vehicles, Unknown source.
  2023.04.17 - PocketWatch - Added 1931 Ugen Dietzgen ad to Halden Calculex showing yellow lens option.
  2023.04.17 - SR_Home_Page - Added Gauge Marks page to resources and link from SR_Terms/Glossary. Data Courtesy of Steve Seale.
  2023.04.16 - United States - Added D-K Statistical Slide Rule(s) 1933 and 1938. One from the Smithsonian as a REF and the other belonging to Dr. Ed. Harper.
  2023.04.15 - Circular - - Add Two M.H.Mears and Fearns Metric Conversion calculators (Hard plastic disks.)
  2023.04.14 - SlideCharts - Add several Circular slide disks.
  2023.04.14 - Acu-Math - Added several photos of eyesaver Yellow models 900T and 1300Tfrom eBay listing 2023.04.14 - BrandIndex - Add Arlton Workshop.
  2023.04.13 - MiscUSA - Added Arlton Conversion Slide Rule along with bios of the designer and the original owner of this specimen, gifted by Ted Baumen Jr.
  2023.04.11 - Received four circular slide rules from Ted and Dawn Baumen of University Park, Florida. Belonged to father Ted Baumen, Sr. (90 Y.O. at this time)
  
  • 23.04.11.01/M495 - Arlton Workshop, Conversion Slide Rule 15cm[6.75in] dia.with instruction sheet, to United States Gallery
  • 23.04.11.02 - Fearns International Unit Conversions Calculator 13cm[5.12in] dia.to circular gallery.
  • 23.04.11.03 - Perrygraf Eckel Flow Calculator - to slide charts gallery
  • 23.04.11.04 - TAD Products Pip[e Flow calculator - to slide charts gallery
  2023.04.07 - Nestler - Added models. No.7, 12c, 20, 40-15, System Kolb (for Dairies), Entfernungsmesser, early 12.5cm pocket,and RP75 (revised). Scans from Andreas Fassbender Collection in Germany. (formatted with ISRM background theme).
  2023.04.07 - Concise - Added No.28 Takeda and 270 (Lafayette)
  2023.04.07 - SR Loaner - Sent 30 basic mannheims to Kim Bjork, Mount Vernon Middle School, Mount Vernon, IA
  2023.04.07 - Sent 7 slide rules to John Emmett in Singapore.
  2023.04.07 - Received K&E 68-1400 Analon sn002070 in orange leather sleeve.
  2023.04.05 - Acumath - Added Model 4T Student Mannheim with Sightsaver Yellow stock c1959.
  2023.04.05 - Pickett - Added Model 120 3rd version with gray braces and equivalents on back. (discovered in school loaner set). Ed millis collection.
  2023.04.05 - Hemmi - Added Hughes-Owens 1777 Versalog, belonged to Mel Frost, with bio and photos. gifted by Les Frost and Marian Nurse.of Kanata, Ontario, Canada.
  2023.04.05 - SR Loaner - Sent 14ea Pickett 120/80 slide rules to Nathan Lewis of the Prospect Sierra School in Oakland , California. Permanent basis.
  2023.03.29 - Deborah Douglas from the MIT museum joined our morning meeting and shared what was happening at MIT and possible joint efforts on the ISRM collection.
  2023.03.27.01 - Received Acu-math No.47 yellow stock Mannheim. Oval logo.
  2023.03.25.01 - Received Hughes-Owens 1777 (Versalog 1460) dcJF belonged to Mel L. Frost, gifted by Les Frost and Marian Nurse.of Kanata, Ontario, Canada.
  2023.03.11 - Pickett - Added[Replaced] 109-ES gift of Stephen Harper, added Bio of Father Dr.A.Edwin Harper. N525-ES StatRule gift of Eric Anderson.
  2023.03.10 - K&E Added 4071T Polyphase Trig 1912 and 4088-3 Duplex Trig 1921.
  2023.03.08.01 - Pickett - Received Pickett N-525-ES Stat rule 1965. Gift of Eric Anderson of Elmhurst, Illinois. Like new.Brown leather sleeve. - replaced 13.07.03.16
  2023.03.07.01 - Acquired K&E 4071T DuplexTrig Lot98 (or 86) 1913 AGC w/leather sleeve marked "Dan Kuhn" [Replaced S431]
  2023.03.01 - Received gift of slide rules from Michael L. Davis of Colorado Springs.
  
  • 23.03.01.01 - K&E N4053 Polyphase Mannheim sn687975 Cursor block broken.w/intact black leather sleeve (restore/scrap)
  • 23.03.01.02 - K&E 4092-3 Log Log Duplex trig sn 258174, Patent numbers lower face,All glass cursor. one lens has two broken corners (replaced both lens with acrylic) with intact brown leather sleeve "E.Paul Seydel" on flap. Fort Dodge Com College 1904 (Duplicate to 04.04.23.02)
  • 23.03.01.03 - K&E 4092-3 Log Log Duplex trig sn 254635, Patent numbers lower face, New Improved Cursor, with brown leather sleeve, no flap "Ralph L. Renner" on stock. (Duplicate to 18.07.26.02)
  • M - K&E 4161 manual
  2023.02.28 - SR_WhosWho - Added Tom Martin's Birth and death year 91936-2023). He passed on January 1. Tom was a founding member of UKSRC. Added Irene Dennert's dates (1927-2022). She was of the Dennert family of Aristo.
  2023.02.28 - Nestler - Added Nestler Slide Rule Date Tracing by Guus Craenen (IM1995 Proceedings) to bottom of page.
  2023.02.28 - KE_Standard - Added 4090 2-slide Universal with edge cursor.
  2023.02.28 - Yearbooks - New gallery. Created a mirror copy of People w/SRs in order to extract Academic yearbooks photos to reduce the size of the other ephemera galleries.
  2023.02.28 - People w/SRs - Now at 1000 photos! Added 15 photos, 10 gleaned from sightings listed in an archive ISRG database, courtesy of Rod Lovett.
  2023.02.28 - Aerospace - Added AT-9 and B-34/37 Load adjuster slide rules with reference photos from wikipedia. Scans by Noh Stegman of the Tri-Stae Warbirds Museum.
  
  2023.02.24 - People/Ephemera - Harvested actors with slide rules that were mentioned in the ISRG data base on Rod Lovett's site.
  2023.02.21 - SR Loaner - Sent 25ea Fedra Log Log to Michael Feeback, Kentucky Governor's Scholar Program, Elkhorn Crosssing School, Georgetown, KY
  2023.02.21 - UnitedStates - Added American Spring, Associated Spring and Connecticut Spring brands. Duplicated in Pickett and Acumath galleries.
  2023.02.21 - UnitedStates - Added bio and slide rules belonging to Howard Malcolm Smith. Added bio for Wallace Barnes founder of Associated Spring.
  2023.02.11 - Received Sterling 687 (587) pocket slide rule in retail package along with 3 other Sterling products. Gift of David Teuton. Belonged to father Max D. Teuton, 1953-1998.
  2023.02.08 - SR_Course - Revised content and updated downloadable PDF of self-paced seminar with ISRM logo and minor web page changes.
  2023.02.08.01 - Received Silver-Reed SR84 electronic slide rule calculator from Serbia.
  2023.02.06.01 - Received Pickett 1000 ortho-phase duplex magnesium.Gifted by Jim Brandyberry of Indianapolis, IN. Belonged to father Howard W. Brandyberry (1913-1971). Howard W. Brandyberry was a lifelong teacher and United States Army veteran who lived in Indiana from 1913 to 1971. He was also a high school basketball coach
  2023.02.05 - Received slide rules belonging to Howard Malcolm Smith (1897-1966). Gifted by Bruce Moody of Fort Mill, South Carolina.
  .
  • 23.02.05.01 - American Spring of Holly slide Rule (made by Acu-Rule)
  • 23.02.05.02 - American Spring of Holly Spring Design Slide Rule Slide Chart Version
  • 23.02.05.03 - K&E 4088-3 sn419109 (1933)with spring design aids on slide
  • 23.02.05.04 - K&E 4053-3 Mannheim sn960135 (1953) modified as a spring design slide rule, usin a scale by by M.M.Smith.'39
  • 23.02.05.05 - Pickett 160 Microline Promo: Electronic Fastenters, Inc on back - to duplicates
  2023.02.04 - Nestler - Added 0254 Delta Log Log Slide Rule. Gift of Michael Rosenborg of Canyonville, Oregon
  2023.02.04 - Post - Added 1447 DP Student Projection Slide Rule, with instructions and overlays. Gift of Michael Rosenborg of Canyonville, Oregon
  2023.02.01 - Received gift of slide rules and Adders from Stephan A Harper. Belonged to Dr. A. Edwin Harper, Jr.(1919-2001) an eminent American psychometrician who worked for the United Presbyterian Church of the USA.He spent his entire working career in India.Coauthor Dr A Edwin Harper, jr and Dr VS Misra, in their book 'Research on Examination in India', published by NCERT
  
  • 23.02.01.01 - Pickett 109-ES Circular with manual and black sleeve.replace ISRM 04.09.27.05 in gallery
  • 23.02.01.02 - Lafayette Concise 270.with black sleeve. to gallery
  • 23.02.01.03 - Takeda Concise 28 with sleeve and manual Takeda Drawing Instruments Mfg.To gallery replace C27
  • 23.02.01.04 - DK Statistical Slide Rule. A cardboard slide chart by The Psychological Corp. ©1933, 1938 to gallery
  • 23.02.01.05 - Universal Metric Converter Pencil cup. Duplicate
  • 23.02.01.06 - Magic Brain Calculator with stylus (Japan) and instructions -duplicate
  • 23.02.01.07 - Wizard Calculating Machine with wallet (Germany) MagicBrainInstand instructions.- duplicate
  2023.01.24 - Began adding thumbnails to the galleries of the relevant Volumes of the Slide Rule Instructions Library.
  2023.01.24 - Concise - Added No. 300 and Lietz branded 3626-25 Stadia Computer. Gift of Cindy Tate.
  2023.01.23 - Aerospace - Finished adding 37 aviation flight computers, gifts of Cindy Tate (Victor B. Tate collection), Andrienne Ervin (Kenneth Ervin Collection), JoAnn Lynn (Joel Lynn collection).
  2023.01.19.01 - Received gift of Triumph LS826 Electronic (slide rule) calculator (Japan) from Patrick Craig of Dayton, Ohio. Belonged to Michael A Brady, Chief Geologist for Parsons.com
  2023.01.05 - Aerospace - Restructured online gallery into several catagories for easier navigation to style.
  2023.01.04 - We received the sad news that Irene Dennert (Aristo family) passed away on December 3, 2022.She was 95 years old.
  2023.01.02 - Received slide rules for loaner program from Michael Rosenborg of Canyonville, Oregon Michael is a retired High School teacher with a Master degree in mathematics. He re-gifted these slide rules to ISRM that were used in his classes. He received them fron a USENET group.
  
  • 23.01.02.01 - Nestler Delta 0254. To gallery
  • 23.01.02.02 - Post 1447DP Student Projection Slide Rule. to gallery
  • Pickett Microline 120: 10 added to loaner kits
  • Acu-Math 400: 5 added to loaner kits
  • Sterling Mannheim 684: 5 added to loaner kits
  • Post Mannheim 1447: 3 added to loaner kits
  • Pickett Simplex Trig N902-ES: 1 added to loaner kits
  • Sterling Decimal Trig Log-Log 594: 1 (scrap)
  2023.01.01 - SR_Home and Library - Added Flight Computers Volume 35 Thumbnails.
  

  ---

  2022.12.23 - Published Flight Computers Volume 35 on Amazon in paperback, hardcover and kindle (revised process - much improved)
  2022.12.20 - Editing manuals for Volume 35 Flight Computers
  2022.12.11 - Published K&E IV Volume 34 in paperback, hardcover and kindle (revised process - much improved)
  2022.12.06.01 - Received Brother 718SR electronic calculator. sn F0092957. Made in Japan.
  2022.12.06.02 - Received Privileg 585D-E electronic calculator. sn17352 distributed by Quelle in germany.
  2022.12.06.03 - Received Santron 71SR electronic calculator.
  2022.12.06 - Published K&E III Volume 33 in paperback, hardcover and kindle (revised process - much improved)
  2022.11.28 - ISRM updates delayed due to COVID 10 day quarantine.
  2022.11.24.01 - Received Omron 10SR Electronic "Slide Rule" calculator. Green VFD. With manual (EN & DE) and sleeve
  2022.11.16.01 - Received Foxboro Valve Sizing slide rule 1939 Stainless steel. Gifted by Daniel Hirshfield of Turnbull, CT. belonged to father Joel Bentley Hirshfield. To gallery.
  2022.11.14.01 - Received Digi-Matic D-8 ESR Calculator. Sears, made in Japan.
  2022.11.12.01 - Received Aero Products Research (APR) E6-3B Wind Triangle Computer.Made possible by a gift from Caroline Soles and John Phillips of High River, Alberta Canada. John has retired, but used to own a small helicopter company called Cascade Rotors with his brother. Caroline used to be a scuba instructor, and is currently learning how to fly. 2022.11.11 - Pickett - added N300-ES w/Modern logo. Gift of Leslie Dormanen.
  2022.11.07.01 - Received a Bowmar MX-90 sn252588 (with mx-100 function keys) electronic calculator for upcoming book.
  2022.11.04.01 - Received a Bowmar MX-100 sn202094 electronic calculator for upcoming book.
  2022.11.03.01 - Received a Bowmar MX-90 sn246551 with charger and manual.
  2022.10.29 - KE_Standard_Adde N<4053-5> 20-inch polyphase mannheim with flanged AGC. Gift of Cindy Tate.
  2022.10.29 - Concise - Added[Replaced] Stadia Computer ISRG Herman van Herwijnen Memorial Edition 2004 with instructions. Gift of Frank W. Cole. 380 Radio Computer ISRG Edition (ebay photo.
  2022.10.29 - Dietzgen - Added 1767P National (wood), 1768P Reliance (Mahagony/Charvoz-Roos), 1768-P (Plastic Fuji), Gifts of John Holmes and Leslie Dormamen.
  2022.10.29 - Pickett - Added N4-T Vector Log flat lens, round black logo. Gift of John Holmes. N200-T Nat'l Science Teachers Assn. "Compliments of Pickett" gift Randall Kirschman
  2022.10.29 - Aerospace - Added two Sillcock-Miller aviation True Air Speed calculators. 1943 Navy version Gift of John Holmes.
  2022.10.29 - France - Added Marc-Unis 13cm mannheim Thin film cursor. Gift of John Holmes.
  2022.10.29 - Graphoplex - Add 640 electric log log variant. Gift of John Holmes.
  2022.10.29 - Received gift of 6 slide rules belonging to Leslie Dormanen of Wheaton, Illinois.add to accession numbers from 2022.10.13.XX
  2022.10.28 - KE_standard - Added Mystery Mannhaeim, gift of Judy Johnson. N<4041&rt> gift of Cindy Tate. 4091-3 w/flanged cursor gift of leslie Dormamen.
  2022.10.28.01 - Received Hanimax Electronic Slide Rule calculator. 2022.10.27 - Post - Added 1452 Universal c1940 Teledyne-Post 44CH-500 Versatrig, Gift of Cindy Tate. Post 1447 cWWII (Charvoz-Roos) Gift of Leslie Dormamen.
  2022.10.27 - SIC SINCO - Added 1510 Astrolog w/square braces. Gift of Dave Zoumaras.
  2022.10.27 - Ricoh - Added Engineer's 1510 Multilog Duplex. Gift of Leslie Dormamen
  2022.10.26 - Hemmi - Added 50/1 Advanced Manheim (1928). .
  2022.10.26 - Aristo - Added 967U w/transparent scales. Gift of Leslie Dormamen
  2022.10.26 - Post - Added 1444-P and 1452-P (both made by Bruning). Gift of Cindy Tate. Teledyne-Post 1441 (Hemmi) gift of Leslie Dormamen
  2022.10.26 - Nestler - Added Nestler's Universalschieber 1904 Scan By Andreas Fassbender
  2022.10.25 - Nordic - Added Letter to Marvin Clarence from the Queen of Denmark in support of ISRM
  2022.10.25 - KE_standard - Added N4053-3 Gift of Dave Zoumaras.
  2022.10.24.01 - Received gift of Concise Stadia Computer herman van Herwijnen Memorial Edition 2004 by Frank W. Cole of Hutchinson, Kansas. replace 21.08.12.02
  2022.10.20 - Ephemera - Corrected formating of rows 120-140
  2022.10.15 - Received gift of a variety of slide rules and books belonging to Dave Zoumaras of San Diego, California. Belonged to father-in-law.
  
  • 22.10.15.01 - Aristo D&P German Artillery Range finder 35cm slide rule - to military and aristo gallery
  • 22.10.15.02 - SIC 1510 Log Log Astrolog no logo, no serial number. narrow cursor block, no scale labels on lens. "265" etched on brace. Replace P511
  • 22.10.15.03 - Pickett N902-ES Duplex Trig Convex Lens, Black naugahyde sleeve - Duplicate to School Loaner sets
  • 22.10.15.04 - Pickett 140-es microline Log Log Black naugahyde sleeve - Duplicate to school loaner sets
  • 22.10.15.05 - Faber-Castel 57/87 Reitz schul-rechenstab dc564 (May 1964)- Duplicate of 9.01.12.60
  • 22.10.15.06 - Pickett & Eckel 1000 polyphase Duplex sn 5F2177, Magnesium Triangle logo, rounded braces- slide is locked
  • 22.10.15.07 - Dietzgen 1746 Maniphase sn708101 Type Multiplex, in retail box Duplicate
  • 22.10.15.08 - K&E 4081-3 sn783239 1940 Log Log Duplex Decitrig - Orange sleeve, flap torn Name on flap "BUBEL" - duplicate of 15.07.07.01
  • 22.10.15.09 - K&E N4053-3 sn859655 1941 Mannheim polyphase stock marked "BUBEL", has KERCS, - to be restored same stock as 11.12.14.01 (no magnifier) to gallery
  • 22.10.15.10 - A. Lietz Company No.2974 Lawrence 250-BT to MiscUSA gallery
  • 22.10.15.11 - Dietzgen pocket (1771 Redi-Rule_ made by Bruning 2401P missing cursor - scrap or restoration
  • 22.10.15.12 - K&E 4097B Pocket Ever-There (Falling apart) scrap - Use good box and manual for a duplicate
  • 22.10.15.13 - Post 1460 Versalog green COS,no serial number. Leather sleeve missing flap. Missing cursor - restore to duplicates
  • 22.10.15.14 - Mascot 2-3/4" diameter Circular slide rule 1934 Cursor wrap is split (taped) - use for gift
  • 22.10.15.M486 - Thompson,The Standard Manual of the Slide Rule second edition 1952 to isrm volumes
  2022.10.14 - Received gift of a variety of 12 slide rules belonging to John Holmes of Washington, D.C.
  
  • 22.10.14.01 - Dietzgen 1778 Pocket Duplex - Made in Germany version 1 cursor - Gallery
  • 22.10.14.02/M487 - Graphoplex 640 System Electric Log Log Instructions in French - to gallery uses S640 scales
  • 22.10.14.03 - Post 1460 Versalog dcDD.Apr 1953 black cos. no SN. slightly faded. Leather sleeve - Duplicate
  • 22.10.14.04 - Pickett N4-T Vector Log Log flat-lens nylon-bars curved-braces round black logo Brown leather sleeve to gallery
  • 22.10.14.05 - Dietzgen 1768P Reliance (Roos SR-105M) Painted mahogany stock, silksdcreened equivalents, no linear scales on back - to gallery
  • 22.10.14.06 - Pickett N902-T Simplex Trig retail box (no slide rule added one from school set with a manual) - Duplicate
  • 22.10.14.07 - K&E 4181-3 sn071122 plastic Log Log Duplec Decitrig. Orange leather sleeve with belt clip. "Charles Horr" inside flap. - Duplicate
  • 22.10.14.08 - K&E 4181-3 sn059288 plastic Log Log Duplec Decitrig. green sleeve (tight). no markings. - Duplicate
  • 22.10.14.09 - Pickett N902-ES Simplex Trig, Retail box w/ manual - Duplicate
  • 22.10.14.10 - Marc-Unis France Pocket mannheim 13cm Thin-Film cursor c1930 - to France gallery
  • 22.10.14.11 - Concise CTSC-552 Sama &Etani Tables, 'Hooker" promo. "OXY" on sleeve. - duplicate
  • 22.10.14.12 - Sillcocks-Miller Co. Aircraft Navigation Computer Mark 8, BU Aero U.S. Navy - to aerospace gallery
  • 22.10.14.13 - K&E 4097C Ever-There with broken glass, swapped out lens from a 4097B cursor with KERCS. - duplicate
  2022.10.13 - Received gift of a variety of 20 slide rules belonging to Leslie Dormanen of Wheaton, Illinois.
  
  • 22.10.13.01 - Post 1460 Versalog dcDD.Apr 1953 green cos. no SN. slightly faded. Leather sleeve - Duplicate
  • 22.10.13.02 - Engineers 1510 Log Log Decitrig dcOS-2 1968 - leather sleeve "Mark Helwig" under flap. - Duplicate
  • 22.10.13.03 - Teledyne Post 1414 (Hemmi P280) dcTI - To gallery
  • 22.10.13.04 - Aristo 967U Darmstadt transparent linear scale - To gallery
  • 22.10.13.05 - Dietzgen 1768-P Mannheim Made by Fuji Japan - To gallery replace REF S402
  • 22.10.13.06 - Pickett N4-ES Vector Type Log Lof, Square Braces, Triangle logo, Flat Lens - Duplicate
  • 22.10.13.07 - Pickett 1010-T Rounded Braces Flat Lens Metal bars - Duplicate
  • 22.10.13.08 - Pickett N1010-T Trig Red Inverse Scales, Square braces, Round black logo, flat lens, black naugahyde sleeve - Duplicate
  • 22.10.13.09 - Acu-Math 400 Mannheim - to School loaner set
  • 22.10.13.10 - Acu-Math 500 Mannheime, Metal braces has cigarette burn - to school loaner sets
  • 22.10.13.11 - Acu-Math 511 Magnesium stock duplex cursor (restored lens.- dulicate
  • 22.10.13.12 - Post 1444-P pocket Mannheim (Bruning 2401) - clean branded sleeve. Back marked "Robert L. Atkins" with cmath aids scratched in. - Duplicate
  • 22.10.13.13 - K&E 4091-3 Log Log Decitrig sn455651 1934 Flanged all-glass cursor (Restored had newer Model L1 cursor) - to gallery
  • 22.10.13.14 - K&E N4058W Beginner's Slide Rule. White painted back Circular No. 47 Equivalents - Duplicate
  • 22.10.13.15 - Aristo No.89 Rietz dc 3LA4 1973 - duplicate same as 09.10.21.02
  • 22.10.13.16 - Post 1446 Mannheim (Pre-WWII) - duplicate same as 11.12.15.02
  • 22.10.13.17 - Post 1447 Plastic Cursor (Roos SR-105M) WWII - to gallery Replace S448
  • 22.10.13.18 - Acu-math 1240 Pocket mannheim, black braces, no oval logo, white sleeve - duplicate of 11.11.06.02
  • 22.10.13.19 - Pickett 140-ES Microline version 3 with red inverse scales - duplicate
  • 22.10.13.20 - Pickett N-515-T CIE Cleveland Institute of Electronics - Duplicate
  • 22.10.13.21 - Pickett N300-ES pocket Log Log curved braces, convex lens, modern logo - to gallery
  • 22.10.13.22 - Pickett 902-ES - Duplicate to slide rule loaner
  2022.10.10 - Added 50 slide rules to the duplicates for adoption page with thumnails of reference specimens.
  2022.10.07 - Aerospace - Added - T.O.P Computer 1971, Jadur 10-second Flightmaster 1937. Telex E-6B FDF-57 1975.Gift of Andrienne Ervin.
  2022.10.05 - Aerospace - Added Bastion Brothers Co. Dalton Mark VII Aircraft Navigation Computer. 1934. Gift of Andrienne Ervin.
  2022.10.05 - KE_Standard - Added 4088-3 c1935 belonged to Kenneth Edward Ervin (1920-2002). Gift of Andrienne Ervin.
  2022.10.05 - Aerospace - Added another B-24 bomber load asjuster slide rule with bios and photos of Kenneth Edward Irvin.
  2022.10.04.01 - Received Pickett 200-T promotional "National Science Teachers ass, 1962 convention, compliments of Pickett" gift of Randall Kirschman, Ph.D.
  2022.10.04 - KE_Standard - Added K&E 4080-3 Log Log Duplex Trig sn059302 1944 in retail box. Cindy Tate collection.
  2022.09.27 - KE_Standard - Added[Replaced] 4031 5-inch mannheim, 68-1608 20-inch Polyphase and 4053-2 Mannheim 1924, Joel L. Lynn collection.
  2022.09.27 - Post - Added[Replaced] 1451 Versatrig Pocket Duplex, Joel L. Lynn collection.
  2022.09.27 - Dietzgen - Added[Replaced] 1757 Primatrig, personal slide rule of Joel L. Lynn (1943-2022)
  2022.09.25 - updated Slide rules for sale/adopt page with additional offerings.
  2022.09 24 - Received 3-D printed cursor blocks from Kenneth and Matthew Gilley.
  2022.09.24 - KE_Standard - Added 68-1281 Jet-log and 68-1581 Jet=Math pocket slide rules. Gift of JoAnn Lynn.Joel J. Lynn Collection.
  2022.09.23 - Pickett- Added B1 Powerlog /sleeve, N16/N600 Twinpack, N600-ES w/Magnifyer, and X-4 Exective Vectorlog. Gifts of JoAnn Lynn. Joel J. Lynn Collection.
  2022.09.21 - Sent numerous slide rules to Trevor Penner of Hillsboro, Kansas for a demonstration.
  2022.09.20 - Received gift of a slide rule collection from Andrienne Ervin belonging to her father who ran an FBO (airplane mechanic) in Utah
  .
  • 22.09.20.01 - K&E 4088-3 sn417709 NIC Brown leather sleeve name inside flap "Ken Ervin".- to KE_Standard gallery with bio and photos
  • 22.09.20.02 - Cox & Stevens B-24 Bomber Load Adjuster sn57525 w/sleeve U.S. Government - to aerospacee gallery with bio and photos
  • 22.09.20.03 - Lawrence Unmarked (wood)
  • 22.09.20.04 - K&E N4053-3 NIC sn558181 missing parts of inch scale - to scrap
  • 22.09.20.05 - Bastion Bros Dalton Mark VII w/ case
  • 22.09.20.06/M - Jardur 10-Second. "Flight Master" w/ instructions to future Air Navigation Volume.
  • 22.09.20.07 - Timm Pocket Position Plotter
  • 22.09.20.08 - Jepco Avigation Plotter PV-2
  • 22.09.20.09 - Flight Navigator-Cable Airport
  • 22.09.20.10 - Eaton Torque and Energy Calculator
  • 22.09.20.11 - AOPA Cruising Altitudes for Magnetic Courses (MSL) (#3)
  • 22.09.20.12 - Denalt Takeoff/Climb Calculators (#3)
  • 22.09.20.13 - Snyder Plotter
  • 22.09.20.14 - Harry H. Knepper Aerial Dead Reckoning Computer w/ case
  • 22.09.20.15/M488 - Things Co. E-6B Flight Computer w/ instructions
  • 22.09.20.16/M - Telex E-6B 1975 5-inch dia Flight Computer Model FDF-57 w/ instructions and sleeve - Duplicate
  • 22.09.20.17/M469 - Telex E-6B 1975 5-inch dia Flight Computer Model FDF-57 w/instructions and sleeve Marked "N3322F Ken Ervin" (tail number)to gallery
  • 22.09.20.18 - Fritz_T.O.P. Computer 1971 Takeoff Performance Computer w/ instructions
  • 22.09.20.19/M492 - Grumman American Flight Computer w/ instructions marked A/C N3322F
  • 22.09.20.20 - Rolling Ruler w/ instructions
  • 22.09.20.21 - Felsenthal CPU-26A/P Computer Air Navigation 2.5-in wide_w/ case
  • 22.09.20.22/M489 - Jeppesen Computer CR-3 Computer (6") - w/ 1940 instructions and case
  • 22.09.20.23 - Jeppesen Computer CR-2 Computer (4") - w/ case
  • 22.09.20.24 - Sterling Precision w/ instructions
  • 22.09.20.25 - National Aeronautical Institute Plotter
  • 22.09.20.26 - Navigation Chart NP-13 Plotters (3)
  • 22.09.20.27 - Weems Aircraft Plotter Mark II
  • 22.09.20.28 - Cable Airport (Upland, CA) Flight Navigator
  2022.09.18 - Acquired an aluminum clad 7-foot slide rule while passing through Boise, Idaho. No manufacturer's marking but is similiar to Pickett design.
  2022.09.13 - Received gift of a slide rule collection from JoAnn Lynn from Washington, DC., in memory of her husband Joel J. Lynn (1943-2022)
  
  .
  • 22.09.13.xx - Many Pickett and K&E in in NOS boxes, replacement K&E indicators.
  • 22.09.13.01 - Pickett X-4 Executive Vectorlog in desk case. To gallery
  • 22.09.13.02 - Pickett B-1 Decitrig Log Log Bamboo (made by Ricoh) with leather sleeve. To gallery
  • 22.09.13.03 - Pickett N600-ES Magnifying lens, Curved brace, Round yellow logo. Maroon sleeveTo gallery.
  • 22.09.13.04 - Pickett N200-T Pocket Trig NOS. hooked braces, convex lens, modern logo. Black sleeve. duplicate
  • 22.09.13.05 - Pickett N300-T Pocket Log Log NOS. hooked braces, convex lens, modern logo. Maroon sleeve w/clip. duplicate
  • 22.09.13.06 - Pickett N1006-T Pocket Trig NOS. curved braces, convex lens, Round Black logo. Maroon sleeve w/clip (has black stain on clip). Duplicate
  • 22.09.13.07 - Pickett N525-T Stat Rule. NOS Reatil box, black sleeve, manual. Duplicate
  • 22.09.13.08 - Pickett N800-ES Log/Log Exponential NOS retail box, Modern logo.manual tan leather sleeve. Duplicate
  • 22.09.13.09 - Pickett N803-T Dual Base Log/Log NOS retail Box. Round black logo, curved braces, manual tan leather sleeve. Duplicate
  • 22.09.13.10 - Pickett N903-T Trig Conversion NOS Retail Box, Round black logo. Curved braces. Clear Convex lens. naugahyde sleeve. Manual. Duplicate
  • 22.09.13.11 - Pickett N904-T Trig Exponential (Decimal Keeper) NOS Retail Box, Round black logo. Curved braces. Clear Convex lens. naugahyde sleeve. Manuals. Duplicate
  • 22.09.13.12 - Pickett N803-T/N600-T Dual Rule Matched Set (Missing 600-T so added 22.05.06.31 to complete set.) - Duplicate
  • 22.09.13.13 - Pickett N500-T/N300-T Log Log Rule Two Paired Set in NOS Retail Box Modern logos Suede sleeves - Duplicate
  • 22.09.13.14/M485 - Pickett N16-ES/N600-ES Twin Pack Eye saver yellow. NOS in Retail Box. Maroon sleves, belt clip. Curved braces. new N-16 manual- To gallery
  • 22.09.13.15 - Pickett N3-ES/N3P-ES TwinPack Eye-Saver Yellow Gold and black box.. Curved braces, modern logo, maroon sleeves. - Duplicate
  • 22.09.13.16 - Pickett N3-ES/N600-ES TwinPack Eye-Saver Yellow Gold and black box.. Curved braces, modern logo, maroon sleeves. - Duplicate
  • 22.09.13.17 - Pickett N4-ES/N600-ES TwinPack Eye-Saver Yellow Gold and black box.. Curved braces, modern logo, maroon sleeves. - Duplicate
  • 22.09.13.18 - Pickett N3P-ES Power log Exponential, Unopened polybag. Maroon sleeve
  • 22.09.13.19 - Dietzgen 1757 Primatrig. Personal slide rule of Joel L. Lynn. Marked "Middle Caswell" - Replace 12.05.06.02
  • 22.09.13.20 - K&E 68-1608 20-inch Modern Polyphase sn510171 c1962-1975 Orange leather sleeve (Replace L07) - To Gallery.
  • 22.09.13.21 - K&E 68-1210 NOS Decitrig Log Log in retail box w/hard cover manual, sleeve, belt clip, - Duplicate
  • 22.09.13.22 - K&E 68-1210 NOS Decitrig Log Log in retail box w/hard cover manual, sleeve, belt clip, - Duplicate
  • 22.09.13.23 - K&E 68-1210 NOS Decitrig Log Log in retail box w/hard cover manual, sleeve, belt clip, - Duplicate
  • 22.09.13.24 - K&E 68-1210 NOS Decitrig Log Log in retail box w/hard cover manual, sleeve, belt clip, - Duplicate
  • 22.09.13.25 - K&E 68-1210 NOS Decitrig Log Log in retail box w/hard cover manual, sleeve, belt clip, - Duplicate
  • 22.09.13.26 - K&E 68-1210 NOS Decitrig Log Log in retail box w/hard cover manual, sleeve, belt clip, - Duplicate
  • 22.09.13.27 - K&E 68-1210 NOS Decitrig Log Log in retail box w/hard cover manual, sleeve, belt clip, - Duplicate
  • 22.09.13.28 - K&E 68-1210 NOS Decitrig Log Log in retail box w/hard cover manual, sleeve, belt clip, - Duplicate
  • 22.09.13.29 - K&E 68-1261 Jet-Log Jr sn137788 Pocket Duplex Decitrig LL NOS - To gallery
  • 22.09.13.30 - K&E 68-1581 Jet-Math sn030576 Pocket Modern Polyphase - To Gallery
  • 22.09.13.31 - K&E 4081-5 20-inch LogLog Duplex Decitrig sc537213 Orange Leather sleeve missing flap - Duplicate
  • 22.09.13.32 - K&E 68-1261 Jet-Log Jr sn137788 Pocket Duplex Decitrig LL NOS no model number on slide. Orange sleeve.1962-1975 - duplicate
  • 22.09.13.33 - K&E 68-1130 Decilon 5, sn 047618 Orange vest pocket sleeve w/clip - Duplicate
  • 22.09.13.34 - K&E 68-1555 Doric (was 9068) sn049545 duplex, orange sleeve - duplicate
  • 22.09.13.35 - K&E 4031_AGC 5in 10cm sn92226 Eearly equivalent label. to gallery
  • 22.09.13.36 - K&E 4150-1 sn025677 Green sleeve w/pocket clip - Duplicate
  • 22.09.13.37 - Post 1451 Versatrig Pocket Duplex - Replace REF in gallery
  • 22.09.13.38 - Odelco (Hemmi) 15cm pocket - to gallery
  • 22.09.13.39 - AW Faber 63/91/338/A 5-inch dc 3-37, thin film folded celluloid cursor - Duplicate
  • 22.09.13.40 - Dietzgen 1737 Decimal Trig Log Log bamboo - duplicate
  • 22.09.13.41 - K&E 4088-3 Polyphase duplex Lot357, AGC, sleeve for magnifier, flap missing. - duplicate
  • 22.09.13.42 - K&E 4160 Chemists Rule All-Glass Cursor sn285755 c1929 sleeve missing flap - duplicate
  • 22.09.13.43 - K&E 4053-2 Polyphase Lot46 NIC (s/b AGC) to gallery (Replace S251 if AGC can be found)
  • 22.09.13.44 - K&E 4080-3 Log Log Duplex Trig (minutes/seconds) sn125236 1945 (1939-1947 scale set) - duplicate
  • 22.09.13.45 - K&E 68-1215 Decitrig Log Log in used retail box w/hard cover manual, sleeve, with belt clip,
  • 22.09.13.46 - K&E 4081-3 Duplex Log Log Decitrig sn661143 1938 w/ leather sleeve - Duplicate
  • 22.09.13.47 - K&E 4054 Polyphase sn182972 (1946). NIC. Intact Black hard sleeve, green retail box - duplicate
  • 22.09.13.48 - K&E N4041 Mannheim sn833838 (1941). NIC. Black hard sleeve, - duplicate
  • 22.09.13.49 - Dietzgen 1757 Primatrig Tan Leatherette sleeve - duplicate gift to M. Gilley
  • 22.09.13.50 - Pickett N600-ES LogLog Hooked braces, convex lens. - duplicate M. Gilley
  • 22.09.13.51/M493 - Jeppesen Model CR-2 Computer ©1955 3.75-inch dia, Ray Lahr Patent BR-4 Manual (for Volumes)
  • 22.09.13.52 - Jeppesen Model CR-5 Computer ©1955 4.38-inch dia, Ray Lahr Patent. - Duplicate (re:Tate collection)
  2022.09.08 - Published Volume 30 - Slide Rule Catalogs 1881-1939. Available on Amazon 2022.09.06 - Working on compiling slide rule catalog pages for Volume 30 1881-1939 and Volume 31 1940-1970.
  2022.09.01 - Received Slide rules and manuals, with photo and bio, from Ronald Ropke (6-11-2042 - )of Grosse Pointe, Michigan,
  
  • 22.09.01.01/M - Pickett & Eckel Model 3-T Dual-Base Log Log Reciprocal Scale - Aluminum stock, Steel cursor , flat lens.
  • 22.09.01.02/M - Pickett & Eckel 1010-T Aluminun Stock Case braces and cursor blocks.
  • M484 "Slide Rule" By C.L. Johnson Spiral bound text book for sel Instruction. 1953-1960
  2022.08.27 - Received Slide rules and manuals, with photo and bio, from Tove and Lise King of Carlsbad, California. Belonged father-in-law Radm.Randolph Winchester King (1923-2017), son of Capt. Thomas Starr King, USN (ret).
  
  • 22.08.27.01 - K&E 4092-3 sn405403 Reinforced all-glass cursor. small crack on lens corner.
  • 22.08.27.02 - K&E 4090-3 Duplex LL Trig sn468224 NIC, 4080-3 sleeve and box
  • 22.08.27/M - 4098A Ever-There 1936 Manual
  • 22.08.27/M - Pickett Trig 1952 manual
  • 22.08.27 - Magnifier and a 1L Indicator
  2022.08.25 - Published Pickett II Volume 29, which includes the 1965 CIE 4-part Picket N515 electronics slide rule course. Available on Amazon.
  2022.08.24 - Re-Published Italiano II Volume 28 corrected errors found by Guiseppe Bianchi Available on Amazon
  2022.08.22.01 - Received two slide rules from Eric Boroff of Millersville, MO. Belonged to father, Michael "Mick" Boroff.
  
  • 22.08.22.01 - Acu-Rule 8" Mannheim Festus, Missouri. To Gallery
  • 22.08.22.02 - Pickett 120 Trainer, gray braces.
  • 22.08.22.03/M - NSEW Slide Rule Training November, 1961
  2022.08.16.01 - Produx_Adding_Machine_Germany - Received Produx Original Adding Machine.
  2022.08.15 - Published Italiano II Volume 28, Begin scanning/editing Pickett II Volume 29.
  2022.08.11 - Italiano II - Began editing Italian textbooks for Volume 28
  2022.08.11 - K&E - added 4088-2 8in Duplex sn 316259 New Improved Cursor c1936. Philip Stanley collection
  2022.08.11 - Lawrence - Added Voltage Drop calculator branded for Geo. Worthington Co. Philip Stanley collection
  2022.08.10 - China/Asia - Added three models of Kingson slide rules, two with adding machines on back.
  2022.08.10 - Hemmi - Added models 30, 32, 34ML, 66 w/"C" cursor, 149 Duplex (1961), P37. Tate and Stanley collections.
  2022.08.09 - Faber-Castell - Added 67/87R w/addiator, 67/22Rb w/Addiator, 67/98Rb w/addiator, 63/98 electro, 63/91R Manheim w/addiator. Philip Stanley and Victor Tate collections.
  2022.08.09 - Ricoh - Added Relay 13cm/15cm pocket slide rule no model number.
  2022.08.09 - Reducing the number of keywords on each page to reflect actual content. Currently too many for search engine optimization.SEO (ongoing task)
  2022.08.09 - Germany - Added Ecobra 1461 w/metal bar cursor. Nestler 11ZM plastic cursoir, Gifts of Cindy Tate.
  2022.08.09 - France - Added early MARC pocket Rietz. w/3-hairlines.
  2022.08.09 - Adders - Added early version of The Lightning Adding machine. Los Angeles, Spruce street address.
  added 4097B metal cursor flat lens, 9068 with unprined cursor blocks. Gifts of Cindy Tate.
  2022.08.09 - MiscUSA - Added Guedon version 3 scales., Bruning 2402 blank back plastic lens. Gifts of Cindy Tate.
  2022.08.09 - Pickett - Added N1006-ES Trig, 1006 Trig, N200-ES Hooked Braces. Gifts of Cindy Tate.
  2022.08.08 - Nestler - Added Circular models RL 75, Andreas Fassbender collection, and RL 130 David Rance Collection.
  2022.08.08 - WhosWho - Added photo of George L. Lockhart founder of Slide Rule & Scale Engineering. Provided by great grandaughter's husband Mike Becktell. Added Otto Meuter Otto Meuter (1892-1970).
  2022.08.07 - Adders - Added The Addiator Universal Standard, expanded the Produx Calculator to include Otto Meuter (1892-1970).
  2022.08.06 - Patents/US - Added several patents related to rotary addiators
  2022.08.04 - Adders - Added "The Calculator Corp." of Grand Rapids, Mich. Predessesor to rotary-dial "The Lightning Calculator". Gifted by Ralph Alter of Indianapolis, Indiana.
  2022.08.04 - Concise - Added a detail about the difference betwen the No.28 and the No.28N
  2022.08.04.01 - Unique - Received and added Unique Universal One slide rule from Roy & Jackie Thurley from Wales in the UK. with bio and school photo.
  2022.08.03 - WhosWho - Added Lyman M. Kells and Willis Kern, authors of K&E manuals. Professors at the US Naval Academy
  2022.08.03 - Received slide rules from John Brandli of Lottsburg, Virginia.
  • 22.08.03.01 - Pickett N-515-T , Round Black Logo, (1962) Early CIE logo, Cleveland Institute of Electronics, Electronic.slide rule.
  • 22.08.03.02 - Concise 28N Circular slide rule ITT Promo.
  • 22.08.03.03 - Perrygraf 1971 Measurement converter. Oki Electronics of America.
  2022.08.02.01 - Received The Calculator Corp. of Grand Rapids, Mich. Predessesor to rotary-dial "The Lightning Calculator". Gifted by Ralph Alter of Indianapolis, Indiana.
  2022.08.02 - Aristo - Added 870 Multilog, Rietz 89, Rietz 89 Red "Made in Germany", 810 Aristo-Puck Philip Stanley Collection.,
  2022.08.02 - United Staes - Added Wisconsin Manufacturers Assn 1959 Metal Trades Apprentice Exhibit promo ruslide rule.
  2022.08.02 - Adders - Added Tower 9, Fractometer Feet-Inch Calculator, Addiator Currency Pound-Shilling-Pence Calculator
  2022.08.02 - Slidecharts - Added Rockwell-Standard Spring Calculator. North American Rockwell Corp. Spring Corp.©1968. Made by COL-Q-LATOR, G.L. Collard & Sons, Maywood, Ill
  2022.08.02 - Aerospace - Added Jeppesen Design WESTAB "TIME SAVER" circular slide rule on 3-ring binder card. Ed Millis collection
  2022.08.02 - Finished searching through the US Naval Academy (1905-1972) and US Air Force Academy (1956-1972) Yearbooks for slide rule images. 225+ images found and thumbnails created.
  2022.08.01 - Received Several books from Ralph Alter of Indianapolis, IN. Added to Friends Of The Museum.
  
  • M479 - "Instruction for A.W. Faber's Improved Calculating Rule" by Charles N. Pickworth. c1906-1907 67 pages Version 4.1 printed in Engand - Duplicate
    
  • M480 - "Instruction for the use A.W. Faber Castell Precision Calculating Rules" by Henry O. Cooper c1923 80 pages - Printed in Bavaria
  • M481 - "Instruction for the use A.W. Faber Calculating Rules" c1920 44 pages includes catalogue section.
  • M482 - "Instruction for the use Castell Precision Slide Rules System Darmstadt" No 67/54b, 67/54R, 1/54, 111/54, 111/54A 4/54, 12-1959 28 pages
  • M483 - "Faber-Castell Slide Rule Primer" Students Columbus No.57/86, Students Rietz No.57/87, 1963 18 pages
  2022.08.01 - Received "Instruction for A.W. Faber's Improved Calculating Rule" by Charles N. Pickworth.c1906-1907 Version 4.1. from Spencer Schmitt,
  2022.08.01.01 - Ricoh - Received and Added Lafayette 99-7055 LogLog dcO.S-2 from Margaret Geller of Watertown, MA. To Ricoh gallery.
  2022.07.30 - Adders - added Lightning Calculating machine manual, Ken+Add 4-digit rotary with history and ephemera.
  2022.07.30 - Military - Added Japanese clone of Bygrave Position Line cylindrical slide rule, with references.
  2022.07.30 - Researching and copying photos from the US Naval Academy (1905-1972) and US Air Force Academy (1956-1972) Yearbooks for slide rule images.
  2022.07.29.01 - Received Acumath No.4 Student mannheim. White stock.
  2022.07.28 - Hemmi - Added P23 Student model. Version 2 with math symbols on lens. Gift of James Pennell Collection
  2022.07.27 - People_wSRs - Got sidetracked and started researching the US Naval Academy Digital archives for slide rule images.
  2022.07.26 - Dietzgen - Added 1749 Style M, 1740 with K&E cursor.
  2022.07.26 - Sterling - Added Metric converter variant with Pipe Specialists, Inc. Promo.
  2022.07.26 - K&E_Standard - Added variations of 4097B V2, 4097C V1, 4098A, 4150-1 V2, 4053 8-inch.
  2022.07.25 - Aerospace - Added Time-distance-speed slide rule by Tru-Flight Calculator Co, of Olive Grove, Illinois. Gift of Philip Stanley
  2022.07.25 - United States - Added 6 slide rules to Parisian Novelty (Tru-Flight Calculator, Selling Cost, Generic) and Whitehead-Hoag (Concrete, Cox's Stadia Computer) brands.
  2022.07.24.01 - K&E - Received K&E 4081-3 LogLogDuplexDecitrig sn804301 (1940) belonging to Mary Regina (nee Clavin) Smith (1922-2009). Gifted by son Donald Smith. With bios and photos
  2022.07.23 - People_w/SRs - Added two images from Cleveland Institute of Electronics course title pages 193 and 1965
  2022.07.22 - United States - Added additional images/info to Patrick Slide Rule Company Brand.
  2022.07.22 - Unique - Added variant of Universal One with expanded back label. Roy Thurley, UK
  2022.07.21 - PocketWatch - Added 2nd version of Soviet KL-1 from the factory that uses the cirsle logo. Internet Origin unknown.
  2022.07.21 - Concise - Added No. 380 Radio Computer with impedance, wavelength, frequency scales. Internet Origin unknown.
  2022.07.18 - Military - added Military Slide Rule 10055 Contract 18-6544-550-100 6-61.
  2022.07.18 - Aerospace - Added B-17GLoad Adjuster c1944, B47 Range Computer. Gift of Cindy Tate. MB4-A and CPU-4AP AiR Nav Comp. Belonged to John A. Roland
  2022.07.18 - Sterling - Added Executive Tan & Brown version of 594 Decimal Trig Log-Log.. Gift of Cindy Tate.
  2022.07.18 - Pickett - Added Pickett & Eckel Model 500 Orthopahse newer font transistional model. Pickett & Eckel Model 4 . Gift of Cindy Tate.
  2022.07.18 - Germany - Added Wichmann 1427 Used cursor from duplicate. Nestler 23. Stadtler Mars 54409 Log Log dc563. Gift of Cindy Tate.
  2022.07.18 - Nestler- Added Nr. 2 Mannheim c1928. Gift of Cindy Tate.
  2022.07.15 - Acu-Math - Added Acu-math 1311 - Duplex Log Log Decimal Trig (Red Oval Logo) c1960. Gift of Cindy Tate.
  2022.07.14 - MiscUSA - Added 68-1100 Decilon with Magnifier, Modified sleeve. Personal SR of Victor B. Tate II.
  2022.07.14 - Ricoh - Added Lutz 102S U.S. government dc W.S-4 1974.
  2022.07.14 - SIC - Added 1510 Astrolog sn 30446 1961 with SIC diamond logo.
  2022.07.14 - Military - added American Blueprint Military Slide Rule, Version 2 cursor.
  2022.07.11 - K&E Standard - Added 4092 duplex AGC with steel cursor bars (CI label shifted), N4053-3F Finely Divided Polyphase, N4058W (1944)
  2022.07.11 - MiscUSA - Added 68-1100 Decilon with Magnifier, Modified sleeve. Personal SR of Victor B. Tate II.
  2022.07.11 - People W/SRs - Added two images from 1937 Cheverolet film. Found by Alessandro Scalini.
  2022.07.11 - Graphoplex - Added[Replaced] Koh-I-Noor Koh-I-Log Log Log Duplex [ISRM 14.01.10.20]. Gift of Cindy Tate.
  2022.07.11 - People W/SRs - Added 18 photos from Stephen F. Austin High School yearbooks (1965-1969) in Oklahoha and from the Oklahoma Times, Daily Oklahoman, Historical Society.
  2022.07.10 - Scanned slide rules and assigned accession number tags to new arrivals from Cindy Tate. Follow along on 22.07.06.xx and watch the list grow.
  2022.07.09 - Received Air navigation computers from John A. Rolando, of Estero, Florida,
  .
  • 22.07.09.01 - CPU-26A/P Computer Air Navigation, 3-1/4 inch dia, Dead Reckoning U.S. Property, General Aero Products. 1975 - to gallery
  • 22.07.09.02 - CPU-26A/P Computer Air Navigation, 3-1/4 inch dia (no slide), Dead Reckoning U.S. Property, Telex Communications inc. 1974 - to gallery
  • 22.07.09.03 - MB-4A Computer Air Navigation, 5 inch,dia. Telex Communications inc. 1974 - to gallery
  • 22.07.09.04 - Concise No.28N DIGITAL Equipment Corp. Promo "Solve problems with a PDP-11" - to gallery
  2022.07.07 - K&E Standard - Added 1924 Beginners slide rule (pre 4058) Cursor w/wood blocks.
  2022.07.07 - Military - Added M24 No.7674033 Rule No 1 Shell, HE M1A1, with insert. Gift of Cindy Tate of Bozeman, MT.
  2022.07.07 - Pickett - Added[Replaced] Model 598 "R" Parameter Slide Rule. Gift of Cindy Tate of Bozeman, MT.
  2022.07.07 - Ricoh - Added Eagle brand No.201 Log Log Speedmaster and No. 202 pocket mannheim. Ricoh No. 514 pocket.
  2022.07.07 - BrandIndex - Added Eagle sold by Texas-Asiatic Trading Company, Dallas, Texas.
  2022.07.06 - Received 230+ slide rules and books (100+ lbs) from Cindy Tate of Bozeman, Montana. Belonged to late husband Victor Boylan Tate II (1932? - 2021), a Montana Rancher/Engineer/Pilot.. Collection consists of a large number of Aviation flight computers. At one time they owned a Bellanca 7GCBC N36233 single engine a/c. Most of the linear slide rules are common and duplicates, gifted for the support of ISRM, but there will be a couple dozen new additions to the galleries and will be assigned accession numbers, as below:
  
  • 22.07.06.01/M468 - Eagle No.201 Speedmaster Log Log dcI.S-2(Ricoh-Japan) Duplex Texas-Asiatic Trading Company, Dallas, Texas. - to gallery
  • 22.07.06.02 - N<4053-3F> (Finely divided scales) sn16364 Lot 96 1923 - to gallery
  • 22.07.06.03 - B-17G Weight Adjuster. - to gallery
  • 22.07.06.04 - Pickett 598 "R" Parameter Slide Rule Duplex - to gallery
  • 22.07.06.05 - K&E 4092 lot 114, alll-glass cursor with Metal Cursor bars, - to gallery
  • 22.07.06.06 - Military M24 No.7674033 Rule No 1 Shell, HE M1A1, with insert - to gallery
  • 22.07.06.07 - K&E Beginners Slide Rule, wood block cursor- to gallery
  • 22.07.06.08 - Lee's Amortizer Slide Rule 17.5 inch New brand Gallery
  • 22.07.06.09 - Wichmann Nr.1427 missing cursor
  • 22.07.06.10 - K&E N4058W Beginner's Slide Rule, Variation 1 with Metal cursor (Variation 2 w/plastic cursor), K&E on lower-left of Equivalents
  • 22.07.06.11 - Slide Rule Scale and Eng. Concrete Quantity Calculator 1947 G.L. Lockhart
  • 22.07.06.12 - Nestler Nr.2 mannheim with trig scales.No model number
  • 22.07.06.13/M477 - Graphoplex KOH-I-NOOR Koh-I-Log 10000 Slide Rule in box With Leather Case Made In France - replace 14.01.10.20
  • 22.07.06.14 - B-47 Range Computer J-47-GE-23&25 Engines, Apr1953
  • 22.07.06.15 - Telex Communications E-6B, 5in dia, Computer Model FDF-57 ©1975 Private Pilot Version - (used 22.09.20.17) duplicate
  • 22.07.06.16 - Felsenthal MB-4 Air Navigation Computer, sn AF6017225 5 inch dia. extended black and white slide
  • 22.07.06.17 - Felsenthal CPU-26A/P Air Navigation Computer, 3.25 inch dia inch dia,V2
  • 22.07.06.18 - Cruver type E6-B Aerial Dead Rockoning Computer. belonged to Tech Sgt. Max L. Winter when he was a Marine in the war.
  • 22.07.06.19/M490 - Kane Aero Co. MK-6B, 5 inch dia, Dead Reckoning Computer ©1957
  • 22.07.06.20 - Piper Flight Computer PC-3 For G.S. and T.H. (Made in Mexico)
  • 22.07.06.21/M470 - (Jeppeson) Sanderson 5 inch dia, Flight Computer SC-3B For G.S. and T.H. (Made in Mexico) ©1972, 1976.
  • 22.07.06.22/M471 - ASA E6-B 5inch dia, Flight Computer ©1992 (Made in Korea) in wallet sleeve
  • 22.07.06.23/M472 - Felsenthal Dalton E6-B Computer Mark I Dial-A-Con. 1968. P/N FDF-17 all-plastic. Man
  • 22.07.06.24/M473 - Jeppeson Sanderson 5 inch dia, Flight (Slide Graphic) Computer For G.S. and T.H. (Made in USA)
  • 22.07.06.25/M474 - Aerodyne C1 Flight Computer 1972
  • 22.07.06.26 - Felsenthal CPU-26A/P Air Navigation Computer, 3.25 inch dia inch dia,V1 US Govt Property
  • 22.07.06.27/M475 - Concise 300 Circular Slide Rule
  • 22.07.06.28 - Felsenthal & Sons Time Distance Computer Type D4
  • 22.07.06.29 - J.B.Carroll Co. Time Distance Computer Type D-4
  • 22.07.06.30/M491 - Kane Aero Co. MK-8 Time-Turn Computer
  • 22.07.06.31 - Kane Aero Co. "SkyKing" 1957
  • 22.07.06.32 - Enco Aviation Products, Humble Oil Co Time Distance 948-0049-18 promo
  • 22.07.06.33 - Aero Insurance Underwriters, PerryGraf 1941,Time-Distance
  • 22.07.06.34 - US Navy, Bu. Aero, Aircraft Navigational Computer Mark 8-A FSSC No.18-C-1755-100
  • 22.07.06.35 - Aero Products Research, USAIG promo,Time-distance computer, Cardboard.
  • 22.07.06.36 - Chevron Flight Guide, Perrygraf 1968. card with aviation disk.
  • 22.07.06.37 - Jeppesen CR-1 Flight Computer, 5.5" dia 1973, 1955 Ray Lahr design, Cardstock disks with cursor
  • 22.07.06.38 - Jeppesen CR-3 Computer 6" dia. 1955 Ray Lahr design. Plastic disks with cursor
  • 22.07.06.39/M476 - Jeppesen CR-1 Flight Computer 4" dia, 1973, 1955 Ray Lahr design, Plastic disks with cursor
  • 22.07.06.40 - Jeppesen CR-5 Computer 3.75" dia. Plastic disks with cursoRadiac_Computer_R-1
  • 22.07.06.41 - Jeppesen CR-2 Computer 4" dia. 1955 Ray Lahr design. Plastic disks with cursor (duplicate)
  • 22.07.06.42 - Phillips 77 Aviation Flight Calculator Time-Distance 3" 1930's.
  • 22.07.06.43 - Pickett & Eckel 500 Orthopase sn2D01116 Log Log Magnesium Round braces Flat lens Triangle logo
  • 22.07.06.44 - Pickett & Eckel Model 4 Hyperbolic sn HC029070 Magnesium Round braces Triagle Logo Gray Rubber Sleeve.
  • 22.07.06.45 - Felsenthal MB-4 Air Navigation Dead Reckoning Computer, snAP126079 5 inch dia. Green & White slide
  • 22.07.06.46 - SIC 1510 Astrolog withLogo sn30446 SIC Logo "KW Diefe" on flap - Replace S512
  • 22.07.06.47 - Sterling 594-X Decimal Trig LogLog Brown Plastic Executive Version 1965 - Replace S222
  • 22.07.06.48 - Staadtler-Mars No.54409 LogLog_Made in Germany, Metal braces, Green Slide dc563 May 1963 - Replace REF
  • 22.07.06.49 - Faber-Castell 2/82 Version 2 with cm/inch scales. Bright metal blocks
  • 22.07.06.50 - American Blueprint Military Slide Rule, Version 2 cursor
  • 22.07.06.51 - K&E 68-1100 Deci-lon 10 sn032078 w/magnifier Modified Case. Owned by Victor B. Tate II. Owner of this collection
  • 22.07.06.52 - Lutz 102S "U.S. Government" Ricoh dcWS-2 1974
  • 22.07.06.53 - Acu-math 1311 - Duplex Log Log Decimal Trig - c1955 Red oval logo, braces both side
  • 22.07.06.54 - Dietzgen 1749 Decimal Trig Manniphase Style M Green slide
  • 22.07.06.55 - Dietzgen 1740P Philips, K&E Cursor, "Dietzgen" Removed from stock and back label. WWII era, Hiding Brand??
  • 22.07.06.56 - Military Slide Rule, 14.5-inch Contract 18-6544-550-100 6-61
  • 22.07.06.57 - Omega Pocket Adding Machine, made in Honkong for WESCOSA, copyright by T.H. Ramsey.
  • 22.07.06.58 - Ken+Add Machines Company. St. Paul Minniesota. Early version (Smithsonion has newer image)
  • 22.07.06.59 - Parisian Novelty 6-inch White Thin-Film plastic slide Rule, Metal trimmed cursor. Dicalite Promo.
  • 22.07.06.60 - Parisian Novelty 6-inch Tan Thin-Film Plastic slide Rule, Folded cursor. Dicalite Promo.
  • 22.07.06.61 - Whitehead-Hoag Cox's Stadia Computer Owner marks "Capt. H.A. Shutes, 105 1st Engineer" W.& L.E. Gurley, Troy, NY promo.
  • 22.07.06.62 - Sterling Metric Converter, Pipe Specialists, Inc. Promo. Yellow slide
  • 22.07.06.63 - Pickett 1006 Trig Square Braces Cast Blocks Flat Lens Triangle Logo
  • 22.07.06.64 - Pickett N1006-ES Trig Curved Braces Short Nylon Blocks Convex Lens Round Black Logo
  • 22.07.06.65 - Pickett N1006-ES Trig Curved Braces Short Nylon Blocks Flat Lens Round Black Logo
  • 22.07.06.66 - K&E 4097B Ever-There sn 35481
  • 22.07.06.67 - Marc France Pocket Rietz Metal framed cursor with 3 hairlines
  • 22.07.06.68 - Faber-Castell Pocket 63-98 Electro dc7-45 3-hairlines thin-film cursor
  • 22.07.06.69 - Ecobra 1461 Sys. Rietz pocket duplex Peeling scales one-sided metal-bar cursor,.Garcia Comercial, Puerto Rico.
  • 22.07.06.70 - Nestler No.11-ZM Trig KRUPP Promo
  • 22.07.06.71/M - Pickett 300 Log Log Magnesium Metal bars Triangle logo with box
  • 22.07.06.72 - K&E 9068 Doric Pocket Duplex, sn177885. No printing on cursor blocks
  • 22.07.06.73 - Guedon Sheetmetal pocket slide rule version 3
  • 22.07.06.74 - Hemmi 16 or 35ML 4in/10cm pocket slide rule magnifing cursor 1926-1929 1935-2948
  • 22.07.06.75 - Hemmi 30 dcOA (1964) 10cm pocket
  • 22.07.06.76 - Relay 5in-10cm (Predecessor to the 505) Mannheim No Model Number With Prod/Quot symbols on corners
  • 22.07.06.77 - Arithma Addiator, White back, "Germany" on back
  • 22.07.06.78 - Teloedyne Post 44CA-500 Versatrig dcWH Aug1972
  • 22.07.06.79 - Post 1452 10" Universal (no nails on back) 1936. extended linear Scale in well
  • 22.07.06.80 - K&E N4053-3 Polyphase sn959382 orange leather sleeve in retail box to duplicate
  • 22.07.06.81 - K&E 4080-3 Log Log Duplex Trig sn059302 1944 hard black case retail box - to gallery
  • 22.07.06.82 - Post 1452P all-plastic no rear label. In Retail Box "Jack Sloot" on sleeve - to gallery
  • 22.07.06.83 - Hemmi 50/1 1928 (was model 102) Improved Mannheim Export 10-in, 28cm, 56cm scale in well Prod/Quot
  • 22.07.06.84 - Pickett 4-T Dual Base Log Log Vector Hyperbolic Aluminum stoc. Artwork 256/257
  • 22.07.06.85 - Post 1444P (Bruning) No Post maker markings. Promo: Associated Students Store, Montana State College, Bozeman, Montana in Retail Box
  • 22.07.06.86 - K&E N<4041> Mannheim sn44106 1922 AGC one corner chipped Name "S. Windelhurst", "143" & "222" scratched on back.
  • 22.07.06.87 - K&E 4071-3 Polyphase Duplex Decitrig sn661715_1938 pre K&E logo - To gallery
  • 22.07.06.88 - K&E 4053-5 20" Mannheim sn2444936 1929, replaced NIC w/Flanged All-Glass Cursor 1933 black cardboard sleeve - to gallery
  • 22.07.06.89 - Lietz 3626-25 Stadia Computer made by Concise - to Lietz and Concise gallery
  • 22.07.06.90 - Sillcock-Miller Company Type D-3 Time-Distance Computer US Army Air Corps Mfgs Part No. C-34637 Spec No.94-27751 - to Aerospace gallery
  • 22.07.06.91 - Cruver Mfg. Co. Type D-3 Time-Distance Computer US Army Air Corps Mfgs Part No. C-106, Order No. 42-6537-P, Spec No.94-27751 - to Aerospace gallery - - - Duplicates
  • 22.07.06.101 - Pickett 101-C Circular dial-rule Version 2 - Duplicate
  • 22.07.06.102 - Dietzgen B-1734 Bamboo Decimal Trig Log Log dc SS-5 - NOS Duplicate
  • 22.07.06.103 - K&E N4053-3 sn51002 All-glass cursor. Replaced lens with ISRM repro - duplicate
  • 22.07.06.104 - K&E 4056 Favorite Slide Rule sn598628 Bright Metal Cursor frame - duplicate
  • 22.07.06.105 - K&E 4054 Polyphase Slide Rule sn291294 New Improved Cursor. In Box Perfect - duplicate
  • 22.07.06.106 - Acu-math No. 40 Concrete Calculator 1949-1952. Blank back. - duplicate
  • 22.07.06.107 - Richardson Rule Works 1776 in sleeve.no cursor - duplicate
  • 22.07.06.108 - Kane Aero Co. MK-6B, 5 inch dia, Dead Reckoning Computer ©1957
  • 22.07.06.109 - new Jeppesen CR-3 Computer 6" dia. 1955 Ray Lahr design. Plastic disks with cursor
  • 22.07.06.110 - Pickett N531-ES CREI Round black Logo Convex lens, curved braces
  • 22.07.06.111 - Pickett & Eckel Model 4 Hyperbolic Magnesium Round braces Triagle Logo. Gray Rubber sleeve. - duplicate
  • 22.07.06.112 - Pickett Model 4-ES Hyperbolic Aluminum Round braces metal bars Round Black Logo has slight red marks - duplicate
  • 22.07.06.113 - Pickett & Eckel Model 1000 Magnesium Round braces - duplicate
  • 22.07.06.114 - Pickett N3-T Log Log Exponential Modern Logo Curved braces - duplicate
  • 22.07.06.115 - Pickett & Eckel Model 1010 Magnesium Round braces - duplicate
  • 22.07.06.116 - Pickett Model 14 U.S. Military Slide Rule - duplicate
  • 22.07.06.117 - Pickett N4-ES Curved braces, Flat lens, Round black logo brown sleeve - duplicate
  • 22.07.06.118 - Pickett N-500-ES Hi Log Log Modern Logo - duplicate
  • 22.07.06.119 - Pickett N-500-ES Hi Log Log Round Black Logo - duplicate
  • 22.07.06.120 - Pickett N-515-T Cleveland Institute of Electronics Modern Logo - duplicate
  • 22.07.06.121 - Pickett N-515-T Cleveland Institute of Electronics Round Black Logo - duplicate
  • 22.07.06.122 - Pickett N-515-T Cleveland Institute of Electronics Round Black Logo - duplicate
  • 22.07.06.123 - Pickett N1010-ES Trig in original box with manual. Modern logo, Convex lens. Triangle logo on black sleeve
  • 22.07.06.124 - Pickett N800-ES Log Log Speed Rule. Retail box brown sleeve w/belt loop. Square braces, Flat lens. Round blk logo Black inverse scales
  • 22.07.06.125 - K&E 68-1100 Deci-lon 10 sn032078 Owned by Victor B. Tate II. Owner of this collection - Duplicate
  • 22.07.06.126 - American Blueprint Military Slide Rule, Version 2 cursor - Duplicate
  • 22.07.06.127 - Graphoplex Koh-I-Noor 10020 Techni-Math in Red hard plastic case
  • 22.07.06.128 - Sun Hemmi No. 50W Mannheim Variant 2 dcDL Dec1953 Cardboard sleeve - Duplicate
  • 22.07.06.129 - Dietzgen 1732 Decimal Trig Log Log sn515002. V1 Cursor, "B.E.Johnson" on box sleeve and brace.- Duplicate
  • 22.07.06.130 - Dietzgen 1732 Decimal Trig Log Log sn553014. V2 Cursor, Box sleeve.- Duplicate
  • 22.07.06.131 - Dietzgen 1732 Decimal Trig Log Log sn556442. V1 Cursor, "Robert Giles" on leather sleeve - Duplicate
  • 22.07.06.132 - Dietzgen 1732 Decimal Trig Log Log sn530507. V1 Cursor, Box sleeve.- Duplicate
  • 22.07.06.133/M - Ve-Po-Ad Reliable Typewriter Addiator with instructions
  • 22.07.06.134 - Parisian Novelty 5-inch Thin-Film slide Rule, Dicalite Promo.
  • 22.07.06.135 - Pickett N600-ES LogLog round yellow logo, curved braces short nylon bars, convex lens, brown leather sleeve
  • 22.07.06.136 - Pickett N1006-ES trig round black logo, curved braces short nylon bars, convex lens, red leather sleeve
  • 22.07.06.137 - Pickett N600-ES LogLog round black logo, curved braces short nylon bars, convex lens, brown leather sleeve
  • 22.07.06.138 - K&E 4098A Everthere sn91680 plastic cursor bars
  • 22.07.06.139 - Dietzgen 1779 - PocketLog made by Ecobra Germany US Zone
  • 22.07.06.140 - K&E ECCO Co. 10000 sn has KERCS Needs cursor restored both lens cracked
  • 22.07.06.141 - Dietzgen 1776 Redirule Pocket Duplex. Note: can be cannabilized to put cursor on K&E 9068 Doric/Ecco 1000/etc.
  • 22.07.06.142 - Pickett 1006 trig early magnesium with triangle logo, Rounded braces Metal bars, flat lens, brown leather sleeve
  • 22.07.06.143 - K&E 4181-1 Log Log Duplex Decitrig sn122728. No model number. Red and Black Scales. Red K&E logo. green sleeve
  • 22.07.06.144 - K&E 4181-1 Log Log Duplex Decitrig sn314609. with model number. Red and Black Scales. Black K&E logo. green sleeve
  • 22.07.06.145 - K&E 4181-1 Log Log Duplex Decitrig sn324592. In Retail Box with manual. Red and Black Scales. Black K&E logo. green sleeve
  • 22.07.06.146 - Pickett 61 pocket duplex Version 1 Black braces
  • 22.07.06.147 - Dietzgen 1771 Redirule (Bruning) Later all-plastic screwed cursor brown sleeve. Texeco Promo.
  • 22.07.06.148 - Bruning 2401 Later all-plastic screwed cursor brown sleeve. Blank back
  • 22.07.06.149 - Post 1461 Pocket Versalog w/sleeve dcSB feb 1968
  • 22.07.06.150 - Post 1441 4in MIOJ 1945-1952 in red box with insert leather sleeve
  • 22.07.06.151 - Post 1441 4in MIOJ 1945-1952 in leather sleeve
  • 22.07.06.152 - K&E 4098A Everthere sn24982 plastic cursor bars, tan leather sleeve
  • 22.07.06.153 - Parisian Novelty Co. 6-inch Pocket Slide Rule c1950 Tan plastic
  • 22.07.06.154 - Concise Type-E Weights And Measures Conversion Tables
  • 22.07.06.155 - Arithma Addiator, White back, "Germany" on back with brown case and manual
  • 22.07.06.156 - Post 1461 Versalog pocket duplex dcRG 1967 no sleeve
  • 22.07.06.157 - Teledyne Post 44CA-600 Versalog II dcWG July 1972 Leather sleeve, no Markings
  • 22.07.06.158 - Teledyne Post 44CA-600 Versalog II dcWH Aug 1972 Leather sleeve, no Markings
  • 22.07.06.159 - Post 1460 Versalog duplex dcOI Sep1964 sn516920 Leather sleeve, Green COS. Crossed-out markings in flap w/belt clip
  • 22.07.06.160 - Post 1460 Versalog duplex dcPH Aug1965 sn628017 Leather sleeve, Green COS. No markings. sleeve has obstruction on bottom
  • 22.07.06.161 - Post 1460 Versalog duplex no dc (c1969) sn843378 Leather sleeve, Green COS. Crossed-out markings in flap w/belt clip "GA Tech". Name in window
  • 22.07.06.162 - Post 1460 Versalog duplex dcMA Jan1962 sn301958 No sleeve, Green COS.
  • 22.07.06.163 - K&E N4083-3 Log Log Duplex Vector sn640454 1952 ST scale, modern logo. Immaculate Name Richard Potter" etched on brace and sleeve. duplicate
  • 22.07.06.164 - K&E 4071-3 Polyphase Duplex Decitrig sn252261 Green leather sleeve (tight). Mahogany Inlaid edges duplicate
  • 22.07.06.165 - K&E Decilon 68-1100 sn023004 in used retail box with manual, sleeve, belt clip - Duplicate
  • 22.07.06.166 - K&E Decilon 68-1100 sn023004 Name inside sleeve "Richard Shutes". - Duplicate
  • 22.07.06.167 - K&E 4053-3 Mannheim Modern design sn457792 K&E logo. c1961 Hybrid plastic/wood stock
  • 22.07.06.168 - K&E 4081-3 log log duplex decitrig sn156731. inlaid edges, Orange sleeve. "T.D. Hardin" inside flap. "Hardin" etched on bace.
  • 22.07.06.169 - K&E 4143 Kissam Stadia rule sn 399340 1961 (new model 68-1486) Orange sleeve, w/ insert
  • 22.07.06.170 - K&E 4071-3 Polyphase Duplex Decitrig sn292083 1947 Black hard sleeve, duplicate
  • 22.07.06.171 - K&E 4070-3 Polyphase Duplex Trig sn584681 1936 Orange leather sleeve, duplicate
  • 22.07.06.172 - K&E 4053-3 Mannheim Modern design sn215366 K&E logo. 1958 Hybrid plastic/wood stock
  • 22.07.06.173 - K&E 4081-3 log log duplex decitrig sn486207.(1950). Model on edge, K&E logo, Black leather sleeve inact but tight.no markings
  • 22.07.06.174 - K&E 4080-3 Log Log Duplex Trig sn811502 1940 Brown Leather sleeve (early metal ring), KERCS restored w/3-D blocks. Name "W.E.Earle" etched on brace & sleeve.
  • 22.07.06.175 - K&E 4081-3 Log Log Duplex DeciTrig sn956082 1943 Brown Leather sleeve. Flap is torn, KERCS restored w/3-D blocks. no markings
  • 22.07.06.176 - K&E 4081-3 Log Log Duplex DeciTrig sn947204 1943 Black hard sleeve. Flap missing one rivet, KERCS restored w/3-D blocks. no markings
  • 22.07.06.177 - K&E 4081-3 Log Log Duplex Decitrig sn235525 1947 (1937-1947 scale set) Black Hard Sleeve
  • 22.07.06.178 - K&E 4092-3 Log Log Duplex sn332637 All-Glass Cursor 1930 Brown leather sleeve. Name on flap"Geo. L. Preto"
  • 22.07.06.179 - K&E 4081-3 Log Log Duplex Decitrig sn427358 1949 K&E logo. (1937-1947 scale set) Orange leather Sleeve
  • 22.07.06.180 - K&E 4081-3 Log Log Duplex Decitrig sn195175 1946. (1937-1947 scale set) Orange leather Sleeve
  • 22.07.06.181 - K&E N4081-3 Log Log Duplex Decitrig sn704303 1953 K&E logo.Inlaid striped edge (1952-1953 scale set) Green leather Sleeve
  • 22.07.06.182 - K&E 4081-3 Log Log Duplex Decitrig sn134966 1945 (1937-1947 scale set) pristine Orange leather Sleeve
  • 22.07.06.183 - K&E 4081-3 Log Log Duplex Decitrig sn915383 1942 (1937-1947 scale set) Orange leather Sleeve Initials "S.A.W." on staock and sleeve
  • 22.07.06.184 - K&E 4092-3 Log Log Duplex sn295719 1929 (1952+ metal framed cursor) Brown leather sleeve. Name on sleeve "Bill Hume"
  • 22.07.06.185 - K&E 68-1318 Log Log Duplex Trig (new 4080-3) sn850965 1965. Inlaid stripe on edge. pristine slide rule and Orange leather Sleeve
  • 22.07.06.186 - K&E 4181-3 Log Log Duplex Decitrig sn066569 1968 All plastic.Orange leather Sleeve Initials "W.P." on sleeve
  • 22.07.06.187 - K&E 68-1251 Log Log Duplex Decitrig sn118349 1968 (4181-3) All plastic.Orange leather Sleeve No markings
  • 22.07.06.188 - K&E 68-1210 Log Log Duplex Decitrig sn650383 1963 Inlaid stripe on edge. K&E Logo. Orange leather Sleeve No markings
  • 22.07.06.189 - K&E 4081-3 Log Log Duplex Decitrig sn507988 1961 Inlaid stripe on edge. K&E logo.Orange leather Sleeve Name "Lerner" scratched on braces.
  • 22.07.06.190 - Post 1462 Laminated wood Duplex, white braces red box leatherette sleeve
  • 22.07.06.191 - Post 1462 Laminated wood Duplex, white braces blackleather sleeve
  • 22.07.06.192 - Post 1462H Postig Duplex Log Log Deci Trig, c1950 (Made In Occupied Japan by Hemmi),
  • 22.07.06.193 - Post 1450 Versatrig dcMD (apr 1962) in black leatrher sleeve (tight) - duplicate
  • 22.07.06.194 - Post 1450 Versatrig dcRJ (oct 1967) in black leatrher sleeve (tight) - duplicate
  • 22.07.06.195 - Post 1450 Versatrig dcVH (aug 1971) in black leatrher sleeve (tight) - duplicate
  • 22.07.06.196 - Post 1450 Versatrig dcQI (sep 1966) no sleeve, Hole drilled in stock, for a demonstration stand.- duplicate
  • 22.07.06.197 - Post 1450 Versatrig dcUF (jun 1970) no sleeve, Hole drilled in stock, for a demonstration stand.- duplicate
  • 22.07.06.198 - Post 1445 Mannheim dcOK Nov 1964 no sleeve - duplicate
  • 22.07.06.199 - Pickett N3-ES Power Log Exponential Modern logo, curved braces, convex lens.small defect on Ln/L scale at 2 mark.- duplicate
  • 22.07.06.200 - Pickett N4-ES Vector Log Dual Base Speed rule Round black logo, flat lens, curved braces..- duplicate
  • 22.07.06.201 - Post 1447 Student Mannheim dcEC - To school set
  • 22.07.06.202 - K&E 4053-3 All-glass cursor lot 36, K scale on edge. Small crack on corner of lens.c1916
  • 22.07.06.203 - K&E 4088-3 Metal-framed cursor sn486019 Sleeve missing flap, marked "1940 Iowa State University" with "Elias"and "Ted"
  • 22.07.06.204 - K&E 4088-3 all-glass cursor lot 227 c1916 (broken lens replaced with plastic equivalent)."James McCully" on sleeve.
  • 22.07.06.205 - K&E N4053-3 sn294323 1929 with Metal framed cursor. Leather sleeve
  • 22.07.06.206 - K&E N4053-3 sn283448 c1947 Circular 47 Equivalents - duplicate
  • 22.07.06.207 - C-Thru_S-94 4.5" Dia Circular - duplicate
  • 22.07.06.208 - Gilson Binary 8" dia V1
  • 22.07.06.209 - Gilson Binary 8" dia V2 (yellow highlights) with sleeve and Manual (Dietzgen)
  • 22.07.06.210 - Gilson Binary 4" dia Midget V1 Generic brown sleeve Frederick Post manual
  • 22.07.06.211 - Gilson Binary 4" dia Midget V1 Generic brown sleeve
  • 22.07.06.212 - Gilson Binary 4" dia Midget V1 Generic brown sleeve
  • 22.07.06.213 - Gilson Binary 4" dia Midget green tint in Dietzgen box Green sleeve with manual
  • -.
  • - Scrap
  • Weems e6-b plastic dial warped, Felsenthal MB-4 Air Navigation Computer, 5 inch dia.
  2022.07.05 - Published Italiano Nestler Volume 27, both in hardbound and paperback editions.
  2022.07.05.01 - Received gift of Ricoh No.514 pocket slide rule. dc L.K-2 from Vince Alcouloumre of Richmond, California.
  2022.07.03 - Completed editing Italiano Nestler Volume 27. Sent front matter to Giuseppe Biachi for proof reading.
  2022.06.30 - Rarities - Added photos to General Hannynton's slide rule.
  2022.06.29 - Italy - Added Marcantoni 12.5RE, 15R, and Compressed gas pocket slide rules.. Gift of Philip Stanley.
  2022.06.28 - EastEurope - Added[Replaced] Logarex 27103 Rietz Made in Czechoslovakia. Gift of Philip Stanley.
  2022.06.28 - Dietzgen - Added Dietzgen 1755P Mannheim 5". Gift of Philip Stanley.
  2022.06.28 - Graphoplex - Added[Replaced] Graphoplex - CALCRUDE Oil Viscosity Slide Rule. Gift of Philip Stanley.
  2022.06.28 - Nestler - Added Models 36 Electro from Andreas Fassbender and 0129 Polymath Duplex, 22, 12, 12a from Philip Stanley.Pocket Textile from David Rance
  2022.06.27 - MiscJapan - Added a 13cm and a 25cm specimen of the "WORLD" brand of slide rule. Possibly made by Hemmi.
  2022.06.27.01 - Received "World" brand Mannheim. Made in Japan Missing cursor. New brand for gallery.
  2022.06.27 - Italiano Volume 26 - I had to fix missing pages, pagination and spelling errors found by Giuseppe Biachi. Submitted changes to Amazon.
  2022.06.25 - SR_WhosWho - I received the Spring 2022 Journal of the Oughtred Society and was saddened by the news of David Sweetman passing in Febuary of 2022. He was a great supporter of ISRM and he was the reason that I published the digital Kindle editions of the ISRM Slide Rule Instructions Reprint Series since he could not hold a book.
  2022.06.25 - Unique - Added "Junior" Code J for training, "Craft" for wood cost, and code F5 "Florida".
  2022.06.25 - Ephermar/People w/SR - Added NASA Female Computer with 20-inch K&E.
  2022.06.25 - British - Added Blundel B.R.L. P15.
  2022.06.24 - Slide Rule Loaner - Sent 25 Fedra Log Log slide rules to the Governor's Scholars Program, Brad Elliot, Ph.D. The Bellarmine School in Louisville, Kentucky.
  2022.06.24 - Thornton-PIC - Added PIC Vest Pocket VP104, VP114 Differential Trig Rietz, VP 124 Differential Trig Log Log.
  2022.06.24 - United Kingdom - Added Bendix (Unknown UK Maker), Boots Ringplan.13cm, 14, cm Standard, 15cm Log Log pocket., PIC VP104, VP114, VP 124.
  2022.06.23 - Nordic - Added Diwa early 601 Rietz, 621 Technical, 631 Commerce, 641 Business. Gift of.Philip Stanley
  2022.06.22 - Nordic - Added UTO 601 Rietz 602, 604 Trig, 605 Mannheim, 651U Darmstadt, 651U Duplolog, 631 Duplex Log Log, 661 Commerce, Diwa 601 metal cursor.
  2022.06.21 - Added 30+ duplicate slide rules to the for sale web page.
  2022.06.21 - Nordic - Added two versions of X-Tra Rietz, one is OEM for ALVIN in Rocoh gallery. Added new X-Tra brand.
  2022.06.21 - Scanned 40+ slide rules, in line to edit post.
  2022.06.19 - Scanning slide rules receieved on 22.03.01 (see list there) from Philip Stanley. And processing images for Italiano mVolume 27 and 28 from Guiseppe Bianchi.
  2022.06.19 - Received Heathkit OCW-1401 Electronic Slide Rule for aircraft Navigatioon. Red LEDs,
  2022.06.18 - Received gift of slide rules from Michael Frey of Newmarket, New Hampshire. and posted in their respective galleries.
  
  • 22.06.18.01 - Dietzgen 1768P Reliance. Variant of rear linear scales - to gallery
  • 22.06.18.02 - K&E National Union Radio Tubes - to gallery
  • 22.06.18.03 - Pickett N1050 Fuller Traffic Rule, Modern Logo, Made in Mexico - to Gallery
  2022.06.17.01 - Received Ohmite Resitance slide chart with standard slide rule from anonymous donor. Pickett to School Loaner.
  2022.06.17 - Gilson - Added 8-inch dia Binary circular Gift of Joseph S. Ayres. with bio on Earle B. Ayres.
  2022.06.17 - MiscUSA - Added Sandia Corp. The Cumulative Binomial Distribution Computer By J.O.Muench
  2022.06.16 - Rarities - Added two examples of Sanders & Sons Proof rules
  2022.06.16 - MiscJapan/Unknown - Added Japanese clone of Sterling 589 Senior (5 braces - red txt on slide)
  2022.06.16 - Nestler - Added Albert Nestler System Rietz 1925 noEquivSlip, 4 slot stock made by D&P.
  2022.06.16 - MiscUSA - Added A.Lietz 3054N Duplex Trig. and Henry Herbert Hyde Optical Slide Rule (c1939) Photography
  2022.06.15 - Faber - Added 11/87 System Rietz, 319 Electro, and 61/87 Rietz. Ted Ulrich collection
  2022.06.15 - Acumath - Added Fullerton-acu Model 500. Ted Urlich collection.
  2022.06.15 - Pickett - Added V1 of N3-ES with rounded metal braces.
  2022.06.15 - Germany - Added HH-Universum 8-in, and added info on H-H, and new catagory: Koch, Huxhold and Hanneman manufacturerer.1909-1942.
  2022.06.15 - Post - Added KHH Frederick Post 1452 (Mike Sypher Image Collection), and 1445 8-inch Mannheim gift of Penelop Ann Martell.
  2022.06.15 - Lawrence - Added Engineering Instruments 10-B No manufacturer markings, gift of Debra Scheidt.
  2022.06.14 - Ricoh - Added Sans & Streiffe 312 Log Log, early lens-width cursor.
  2022.06.14 - PocketWatch - Added Fowler's Twelve-Ten Calculator, gift of Phillip Rodley, Upperhutt, New Zealand.
  2022.06.14 - Hemmi - Added 255D Electriical Eng dcQB 1966 Gift of Phillip Rodlery, NZ.and 256D for Expert Mechanical Engineer dcTC(1969), Ted Ulrich collection,
  2022.06.14 - Germany - Added ALKU ALKU Rechenschieberifabrik Neugersdorf 7/387/4001 Rietz. Ted Ulrich, collection.
  2022.06.14 - MiscUSA - Added Kolesch Co. 10-inch Mannheim.
  2022.06.14 - K&E_Standard - Added 4031 5-inch pocket Mannheim All-Glass cursor c1915..gift of Nancy Ulrich from her husband's, Ted Ulrich, collection.
  2022.06.14 - K&E_Standard - Added 4088-3 Duplex Polyphase sn450985 1934 (with 1936 cursor), gift of Stephen Kozerowitz (84) Belonged To Father, Max Kozerowitz with bio.
  2022.06.13 - K&E_Specialty - Added N4100 Stadia sn 160503 1926. N4133 Roylance sn795150 1940. Gift of Philip Stanley.
  2022.06.11 - K&E_Standard - Added 4088-3 1913 Column Cursor, 4070-3 1941, First version of 4053 1909. 4065-T 1916, 4071 1915, N4041 1925. 4054 Favorite 1901. Gift of Philip Stanley.
  2022.06.09 - Hemmi _ Added[Replaced] model No. 136 System Darmstadt dcJF 1969. Gift of Philip Stanley.
  2022.06.09 - K&E_Standard - Added 4053-2 Lot 314, 1906-12, 4088-2 , sn242068 1928. 4053-5 sn480028 1961, redated several 4053-5 listings. Gifts of Philip Stanley.
  2022.06.09 - Aerospace - Added Jeppeson CSG-1A Pilots Slide Graphic Computer, gift of Nancy Ulrich from her husband's, Ted Ulrich, collection.
  2022.06.08 - MiscUSA - Added Arthur Brown & Bros No.7997A Proportional Slide Rule. Stainless Steel sheetmetal.
  2022.06.08 - K&E_Standard - Added 4088-2 Column Cursor lot 94 c1913. Gift of Philip Stanley.
  . 2022.06.06.01 - Received Arthur Brown & Bros No.7997A Prop[ortional Slide Rule. Stainless Steel sheetmetal.
  2022.06.05 - Nestler - Added 0239 Rietz dc5768 27cm scale. green slide. Gift of Philip E. Stanley.
  2022.06.05 - Aristo - Added 966 Multilog dc503 (marked Dennert & Pape). Gift of Philip E. Stanley.
  2022.06.05 - Pickett - Added N1010-ES "N" model but no "DI" scale like on 1010-Es model and 902-T Northeast Institute of Industrial Terchnology. Gift of Philip Stanley.
  2022.06.05 - British - Added PIC "Junior" basic manheim. Gift of Philip Stanley.
  2022.06.04 - Pickett - Added Model N2-T - LogLog Speed Rule Dual Base Extended Range (1959) and N904-ES Decimal Keeper. . Gift of Philip Stanley.
  2022.06.04 - MiscUSA - Novatni Paper box board slide rule. Gift of Philip Stanley.
  2022.06.04 - KE_Standard - Early 4080-3 sn 551696 no 1936 K&E logo, Blacl LLO, LLOO scales. Gift of Philip Stanley.
  2022.06.04 - SR_Dates - Added charts to Nestler section from Guus Craenen from IM1995 Proceedings. Modified layout slightly. Expanded Dennert & Pape.
  2022.06.02 - Nestler - Added No. 10 c1944. Gift of Philip Stanley Collection.
  2022.06.02 - Nordic - Added UTO 601 variant with 13cm scale and yellow slide. No promos. gift of Ron Gribnitz of Babsfontein Gauteng, South Africa.
  2022.06.02 - Faber - Added 111/87A addiator Rietz dc1068 and 1/92 Log Log dc161. gift of Ron Gribnitz of Babsfontein Gauteng, South Africa.
  2022.06.02 - Unique - Added Unique Universal Slide Rule. gift of Ron Gribnitz of Babsfontein Gauteng, South Africa.
  2022.06.02 - Published Italiano Volume 26 in the Slide Rule Instructions Library. Italiano Istruzioni per i Regolo Calcolatori (Annotato) Ristampe della libreria ISRM. Contributors: Giuseppe Bianchi, Giovanni Breda, Maurizio Romano and Nicola Marras.
  2022.06.01 - Received slide rules from Ron Gribnitz of Babsfontein Gauteng, South Africa. Belonged to his father
  • 22.06.01.01 - Faber-Castell Addiator 111/87A Rietz, dc1068. Missing cursor. Cannabalized cursor from 57/87 dc959 from duplicates. to gallery (57/87 to scrap).
  • 22.06.01.02 - Faber-Castell 1/92 dc161. Missing cursor.
  • 22.06.01.03 - Unique Universal Slide Rule .- Duplicate.Swap with 17.05.02.09
  • 22.06.01.04 - UTO 601 13cm scale yellow slide, no promo- to gallery.
  2022.05.25 - K&E Standard - Added 1922 N<4053-3> Polyphase sn5291 and other slide rules from the Franklin G. Fink collection along with photos and a bio. Gifted by daughter Judy F. Johnson of Maryland.
  2022.05.24 - Received donation from Matt Gilley of Texas. He and his boys were given a tour of the museum archives.
  2022.05.22 - Recieved box of slide rules from Judy Johnson. Owned by Franklin G. Fink(1935 - 2017). Gifted by daughter Judy F. Johnson of Maryland.. Mostly K&E's. A graduate of Brooklyn Polytech, Frank worked as an engineer & later found his calling collecting & selling antique & surplus instruments.
  
  • M448 - K&E 1921 36th edition Catalog
  • 22.05.22.01 - K&E 4055 Favorite sn 240483 1928 AGC. Embossed with "Franklin G. Fink" to gallery
  • 22.05.22.02 - K&E 4092 AGC w/metal blocks 1915 Lot16 no serial number to gallery
  • 22.05.22.03 - K&E 4098A pocket duplicate sn52454 - duplicate
  • 22.05.22.04 - K&E 4055 Favorite sn 437389 1928 Reeinfiorced AGC. in black sleeve. [Replace S067] to gallery.
  • 22.05.22.05 - K&E N<4053-3> Polyphase sn5291 with Lot45 stamp. 1922, AGC. in black carboard sleeve. N outside the bracket. - to gallery.
  • 22.05.22.06 - K&E 4054 S/N 291745 NIC 1947 (replaces 2011.11.04.01 - find and add to duplicates)
    
  • 22.05.22.07 - K&E 4092-3 AGC w/plastic blocks 1923 sn64718. Times New Roman Labels. Restored broken lens. to gallery
  • 22.05.22.08 - K&E 4088-3 AGC Lot 35 Chipped lens corner..black hard case - Duplicate
  • 22.05.22.09 - K&E N4053-5 Mannheim sn556780 1936 - No sleeve - Duplicate
  • 22.05.22.10 - K&E N4053-5 Mannheim sn377122 1948 - No sleeve - Duplicate
  • 22.05.22.11 - K&E N4053-5 Mannheim sn684508 1938 - Black leather sleeve - Duplicate
  • 22.05.22.12 - K&E Mystery Mannheim Slide Rule sn552194.c1947 (Rare 4053-3 stock with 5 inch 4097D CF/DF.scales).to gallery
  • 22.05.22.13 - K&E 4056 Favorite sn629140 no sleeve. - Duplicate
  • 22.05.22.14 - K&E 4053-3 lot226 1914 All-glass cursor with Metal bars.w/side hairline - glass has a crack on one corner. Leather sleeve flap has "Robert Baer Deer Lodge, Montana" - duplicate same as 10.03.01.11
  • 22.05.22.15 - K&E 68-1617 Polyphase (new 4053-3) Mannheim sn101378 c1962-1975 green sleeve - duplicate
  • 22.05.22.16 - K&E N4053-3 Polyphase sn375584 1948 K&E logo on right of slide - duplicate
  • 22.05.22.17 - K&E 4081-3 Duplex Decitrig sn7055606 1939 KERCS, restored with ISRM cursor blocks.has "MOORE" scratched lightly on stock Hard Cardboard sleeve, flap separated - duplicate
  • 22.05.22.18 - K&E 4081-3 Duplex Decitrig sn303691 1947 1952 cursor lightly on stock Hard Cardboard sleeve, flap separated - duplicate
  • 22.05.22.19 - K&E 4070-3 Duplex Trig sn780883 1940, brown leather sleeve intact - duplicate
  • 22.05.22.20 - K&E 4070-3 Duplex Trig sn717360 1939, black leather sleeve (too stiff to close - duplicate - needs cursor
  • 22.05.22.21 - K&E 4088-3 Polyphase Duplex sn248755 no cursor (had KERCS, frame and glass salvagable) - duplicate - needs cursor
  • 22.05.22.22 - K&E 4088-3 Polyphase Duplex sn46358 1922 NIC (s/b AGC) Times Roman Text belonged to Alvin Elkins, Oklahoma A&M College U.S. Navy, sleeve with loop - Gifted to Ned Hurle
  • 22.05.22.23 - K&E 4070-3 Duplex Trig Lot94 1921 w/ B scale, - to gallery
  • 22.05.22.24 - K&E 4083-3 Vector Log Log Hyperbolic sn505324, repaired with ISRM replica cursor - to duplicate
  • 22.05.22.25
  • 22.05.22.26
  • 22.05.22.27
  • 22.05.22.28
  • 22.05.22.29
  • 22.05.22.30
  • 22.05.22.31
  2022.05.22 - ISRM Slide Rule Library Reprint Series - Working on Italiano Volume 26 - Contributors Maurizio Romano and Gusiseppi Bianchi of Italy.
  2022.05.22 - Nestler - Added Nestler 0373 System Moisson - Scan by Andreas Fassbender Collection, Germany
  2022.05.20 - Aristo - Added 0970 (Charvoz) dc595 with provenance.photos and bio.. Gift of Karen Weiner. Belonged to Peter Douglas Weiner (1929-2015).
  2022.05.20 - Dietzgen - Added 1746 Manniphase Multiplex with provenance.photos and bio.. Gift of Karen Weiner. Belonged to Peter Douglas Weiner (1929-2015).
  2022.05.20 - Acumath - Added Yellow stock versions of No.1240 and 511 Mannheim. Added Simpliform Spring Design. Belonged to Peter Douglas Weiner (1929-2015).
  2022.05.20 - Relay/Ricoh - Added Nikkei Nippon No.250
  2022.05.19 - SR for Sale - restructured HTML page . In process.
  2022.05.19 - UnitedStates - added[Replaced 3.07.03.05] Charles Bruning 2401 narrow metal framed cursor. Magnifier insert. Borg-Warner Promo. Gift Of Nancy Ulrich for the Ted Ulrich Collection.
  2022.05.18 - UnitedStates - added new brand section : CENCO , Central Scientific Co. Chicago , Added No. 73256 and 1921 Gas Volume Reduction Chart.
  2022.05.18 - Brands - added CENCO , Central Scientific Co. Chicago (1900-2000)
  2022.05.17 - Pickett - Revised Model N600-T Hooked Brasces and expanded bio of Dr. Jerry L Sweet (1939-2019) R.I.P. Doc Sweet!
  2022.05.17 - Blundell/BRL - Added No. 604 Electro Gift Of Nancy Ulrich for the Ted Ulrich Collection
  2022.05.16.03 - Received UTO No.601 Pocket Rietz. 2022.05.16.02 - Received Nikkei No.250 8inch Metal backed bamboo. Nippon Slide Rule Company.
  2022.05.16.01 - Received Acumath 1240 w/Yellow stock. Oval logo
  2022.05.16 - Lawrence - Added Unbranded Engineering Instruments 10-B. Gift of Debra Scheidt of Fenton, Missouri
  2022.05.16 - UnitedStates - Added two versions of the Perrygraf 15inch circular for the Seattle Professional Engineering Employees Assn. belonging to Richard E. Bateman, with Biography and photos. Gift of Marc G. Bateman of Shoreline, WA.
  2022.05.16 - Pickett - Added[Replaced] Model 500 magnesium Orthophase [S377] belonging to Richard E. Bateman, with Biography and photos. Gift of Marc G. Bateman of Shoreline, WA.
  2022.05.16 - Acumath - Added[Replaced] Festus "Acu-Rule" [S289/18.09.17.38] belonging to Richard E. Bateman, with Biography and photos. Gift of Marc G. Bateman of Shoreline, WA.
  2022.05.12 - Aristo - Added 901 Aristo-Junior (Germany) dc 3LS12 Gift of Nancy Ulrich. Ted Ulrich Collection.
  2022.05.13 - Pickett - Added N600 first transistion to -ES model Square Braces. Gift of Nancy Ulrich. Ted Ulrich Collection.
  2022.05.13 - Dietzgen - Added N1732 sn588709 Decimal Trig Type Log Log Maniphase Multiplex. Gift of Nancy Ulrich. Ted Ulrich Collection.
  2022.05.13 - Relay/Ricoh - Added Alvin CS206 (rebranded Concise 300). Gift of Nancy Ulrich. Ted Ulrich Collection.
  2022.05.13 - Concise - Added[Replaced] #300 Alvin CS206 Branded. Gift of Nancy Ulrich. Ted Ulrich Collection.
  2022.05.12 - Aristo - Added Naviat 661 Nautical Navigation computer with Manual (in German).
  2022.05.12 - Received scans of Aristo 661 Naviat Nautical Navigation slide rule and 32 page manual from Uwe Buettner of Germany. Destined for DEUTSCH II Volume XX.
  2022.05.12 - Received scans of Italian slide rule instructions for Volume 26 - Italiano from Maurizio Romano.
  2022.05.12 - Friends of The Museum - Did houskeeping and sent belated thank you emails to donors. Added Marc bateman, Karen Weiner, Harold Frost, Giuseppe Bianchi, Larry Kehl.
  2022.05.06 - Received gift of slide rules from Nancy (nee Allison) Ulrich of Denver, Colorado. These belonged to Theodore (Ted) A. Ulrich (1943 - 2021), Lieutenant Commander, U.S. Coast Guard (Ret.)
  • 22.05.06.01/M446 - Wang Hing Abaacus (Hong Kong) 2x5x9 beads. Belonged to Nancy Ulrich. Given to her in High School. Add book to Abacus Instructions Volum XX.
  • 22.05.06.02 - Pickett N600-ES LogLog Round Black Logo Square Braces - Brown Sleeve Marked "ULRICH"
  • 22.05.06.03/M447 - Dietzgen N1732 sn588709 Decimal Trig Type Log Log Maniphase Multiplex purchased new at USMMA in 1961 - Black Sleeve/manual Marked "ULRICH, T. '65"
  • 22.05.06.04 - Dietzgen N1725 sn185334 Vector Type Log Log Micromatic Duplicate
  • 22.05.06.05 - Aristo (Charvoz) 0970 Duplex Log-Log dc595 (1959) - purchased new at USMMA in 1961 - Brown Leather Sleeve Marked "T.A ULRICH". to gallery
  • 22.05.06.06 - Aristo 968 Duplex Log-Log dc2LRT8 (1971) - used by Ted Ulrich in his career until the computer age. defective cursor, needs two new screws. Adopt
  • 22.05.06.07 - Alvin CS206 (Concise 300) circular - New addition. To Concise gallery and Relay#Alvin gallery.
  • 22.05.06.08 - Pickett Model 2 snC008364 Magnesium V2 - Duplicate
  • 22.05.06.09 - Pickett N4-T V1 Square braces Flat Lens Round black Logo All-Black Text - To gallery
  • 22.05.06.10 - Pickett N1010-T Trig, scale faded. Brown leather leather sleeve "B.Carter" on flap - Duplicate
  • 22.05.06.11 - Pickett 902 Simplex-Trig Magnesium. excellent - Duplicate
  • 22.05.06.12 - A.W. Faber 61/87 System Rietz dc8-40 14cm RR track scales- To gallery
  • 22.05.06.13 - A.W. Faber 319 Electro dc2-32 14cm RR track scales - To gallery
  • 22.05.06.14 - A.W. Faber 11/87 System Rietz dc12-45 27cm RR track scales - To gallery
  • 22.05.06.15 - ALKU Rechenschieberfabrik, (108) Neugersdorf (Saxony, Germany 37/387/4001 25cm Ing. Alfred Kuhmann of Neueibau - To German Gallery Ref:https://www.nzeldes.com/HOC/ALKU.htm http://www.rechenschieber.org/ALKU-Vortrag.pdf
  • 22.05.06.16 - Fullerton-Acu No.500 Plastic Stock, Mertal Braces - To Acumath gallery
  • 22.05.06.17 - Nestler Nr.23R/3 1.5 cm edge scale - Duplicate
  • 22.05.06.18 - Hemmi 259D Expert Mechanical Engineer dcTC March 1969 - Replace REF in Hemmi gallery
  • 22.05.06.19 - Post (Hemmi) 1460 Versalog sn219925 dcLG Green COS Leather sleeve, label marked Capt.Blackburn - Duplicate
  • 22.05.06.20 - Aristo-Junior 901 dc3LS12 Made in Germany - New to Aristo Gallery
  • 22.05.06.21 - K&E 68-1210 Log Log Duplex Decitrig sn570382 Brown leather sleave - Duplicate
  • 22.05.06.22 - K&E 4181-3 Log Log Duplex Decitrig sn077507 Green leather sleeve - Duplicate
  • 22.05.06.23 - K&E 4031 5" pockert mannheim, sn95153 to gallery (Replace P109)
  • 22.05.06.24 - K&E 4070-3 Trig NIC sn227925. Stock Imprinted with "WILLIAM L. KING" Has KERCS. Needs restoration. - Duplicate
  • 22.05.06.25 - K&E 40181-3 Log Log Duplex Decitrig sn385744. Metal parts corroded. Plastic lens can be reused.
  • 22.05.06.26 - K&E 68-1130 Pocket Deci-Lon sn016172 Excellent. "J.B.H 6-65" in sleeve. Duplicate
  • 22.05.06.27 - Soviet Leningrad Factory Aviation Navigation Slide Rule. To Soviet and Aerospace galleries.
  • 22.05.06.28 - Jeppesen CSG-1A Slide Graphic (Aviation) Computer - Duplicate
  • 22.05.06.29 - Pickett N600-T Dual Base Log Log in Retail Box NOS with manual Hooked braces Modern logo - to gallery Replace P094
  • 22.05.06.30 - Pickett N600-T Dual Base Log Log in Retail Box NOS with manual Hooked braces Modern logo - to duplicate
  • 22.05.06.31 - Pickett N600-T - Log Log Synchro-Scale – Maroon Leather clip sleeve, Hooked braces, nylon bars and convex cursor lens. Red and black text. Modern logo. - put with N803/N600-T matched set duplicate
  • 22.05.06.32 - Pickett N600-ES - Log Log Synchro-Scale – Tan Leather clip sleeve square braces, nylon bars and flat cursor lens. All black text. Round black logo.- Duplicate
  • 22.05.06.33 - Pickett N200-ES - Log Log Synchro-Scale – Black Leather clip sleeve, Curved braces, nylon bars and convex cursor lens. All black text. Round black logo. - duplicate
  • 22.05.06.34 - BRL Blundell 604 Electro Brown leather sleeve - Replace P166
  • 22.05.06.35/M - Wizard Calculating Machine in brown wallet - Duplicate
  • 22.05.06.36 - Bruning 2401 Mannheim, retail sleeve, with manual Promo: Borg-Warner Coirp. Marvel-Schebler carbuerator Div.- to gallery
  • 22.05.06.37 - Central Scientific Co., Cat. No.73256 Parisian Novelty, thin film design. to gallery
  • 22.05.06.38 - Central Scientific Co., Cat. No.73256 Parisian Novelty, thin film design. - Duplicate
  • 22.05.06.39 - Central Scientific Co., Cat. No.73256 Parisian Novelty, thin film design.- Duplicate
  • 22.05.06.40 - Central Scientific Co., Cat. No.73256 Parisian Novelty, thin film design. - Duplicate
  • 22.05.06.41 - Indeco Rule, Metal and plastic, brown leather sleeve - Duplicate
  2022.05.05 - Received slide rule and books from Chris Sell of Allantown, PA.
  
  • 22.05.06.01 - Sanders & Sons Makers, 228 High, Holborn, London
  • 22.05.06.M444 - Keuffel & Esser Catalogue 38th edition (Minneapolis Blueprinters), Copyright 1887-1936, with 1939 price list.582pages
  • 22.05.06.M445 - Keuffel & Esser Catalog 40th edition (Minneapolis Blueprinters), 1887-1944. 379 pages
  2022.05.02 - Received gift of slide rules and a cash donation from Marc G. Bateman of Shoreline, WA. Donated in memory of his father, Richard E. "Dick" Bateman, who acquired these items. With bio.
  
  • 22.05.02.01 - Acu-Rule slide rule with magnifying cursor. Dick Bateman in well. add to gallery. replace S289 and 18.09.17.38
  • 22.05.02.02 - Pickett 500.Orthophase Log Log snB140477, P&E logo. rounded braces. Flat lens. magnesium (stuck) Replace S377
  • 22.05.02.03/M443 - Kes-Add pocket adder (rotary dials) with stylus. Duplicate, but manual is new addition to library and ISRM SRILS.
  • 22.05.02.04 - Slide-Chart Corp. 1964 Perrygraf Corp 15" Circular Slide Rule Red and tan
  • 22.05.02.05 - Slide-Chart Corp. 1964 Perrygraf Corp 15" Circular Slide Rule Red/grey and white
  2022.04.29.01 - Received Guedon Pocket Miniture "Spauling Fibre Company". Replace P176
  2022.04.28.01 - Received Pickett N3-ES Flat lens, Round blk logo, curved braces. Gift of Robert W. Spalteholz of Somerset, NJ.
  2022.04.27 - MiscUSA - Added Patrick Corp. Model IV Data Log Hyperbolic slide rule c1963. Found images on eBay.
  2022.04.24 - Circular - Repaired broken links and deleted duplicate postings found in Aristo anf Faber-Castell galleries.
  2022.04.20 - The curator received an acceptance letter from the Graduate school of the University of Oklahoma for a Master of Arts Degree in Museum Studies.
  2022.04.20 - Received two slide rules, A K&E 4080-2 sn468659 and 4181-1 sn029717 belonging to Ted Alt Jr. of Phoenix, AZ. He purchased these in the 1950s.
  2022.04.14 - Applied to OU and CU for their Graduate program in Masters of Museum Science.
  2022.04.14 - WhosWho - Added James Marshall Bready, fellow of the Oughtred Society and editor of the Journal. Why was he not there before escapes me??
  2022.04.11.01 - Received Gilson 8" Binary slide rule from Joseph S. Ayres, of Yellow Springs, Ohio. Belonged to his father Erle Bingham Ayres.
  My father was Erle Bingham Ayres, born 1910 in Boston, Mass, died 1996. He had a PHD in Organic Chemistry (from Duke?), worked for Mine Safety Appliance,Callery Chemical Co., Carnegie Mellon, and others, ending his career teaching physics and chemistry at Drexel University in Pennsylvania. His wife, Janet McAfee Ayres, taught biology. Joseph writes: "My dad said that if you owned it, you need to know how to fix it. He took his mechanical typewriter apart and cleaned an oiled it! He got a Crescent wrench, and taught me to fix bicycles. I moved up to Motorcycles, cars, then worked for industry teaching the engineers how to run the machines and the maintenance guys how to keep them running. I am still fixing things. Spent part of the day fighting a stubborn serger.". The slide rules were passed down from his older brother Erle Danial Ayres (1942-2020).
  2022.04.11.02 - Received Pickett 902-ES slide rule from Joseph S. Ayres, of Yellow Springs, Ohio. To School Loaner set.
  2022.04.10.01 - Received Acumath 511 Yellow Magnesium stock Oval logo. Gary Virkler of Rome, New York
  2022.04.10 - WhosWho - Added Prof. Dr. Ina Prinz and Prof. Dr. Bernhard Korte, both of the Arithmeum museum in Bonn, Germany.
  2022.04.10 - WhosWho - Updated George Edward Keane's entry. He passed on Aug 16, 2020, and had suffered from Parkkinson's disease for many years.. George was a good friend to ISRM and supplied the first seed SR loaner set for schools.He was the recipient of the OS Award in 2012. He was 86.
  2022.04.09 - Received gift of slide rules from Phillip Rodley of Upperhutt, New Zealand.
  
  • 22.04.09.01 - Fowler's "Twelve-Ten" Calculator, with leather pouch. To gallery (replace REF)
  • 22.04.09.02 - Hemmi 255D dcQB (Feb 1966) For Expert Electrical Engineer. in leather sleeve. To gallery (replace S274)
  • 22.04.09.03 - Slide Rule Tie tack (Novelty).
  • 22.04.09.04 - Slide Rule Tie tack (Novelty)
  2022.04.09 - Republished Indonesian Volume 23 with corrected PDF layout. Amazon allowed the Hardcver to go LIVE. Yay!
  2022.04.09 - Republished Nederlandse II with corrected covers showing "II".
  2022.04.08 - Finished compiling/publishing the pages for the latest Volume 25 - "Nederlandse II Rekenliniaal Naslagwerk" the second of two Dutch volumes in the ISRM book series.
  2022.04.08 - Received gift of slide rules from Penelope Anne Martell of San Jose, California. Belonged to her grandfather Milo Higgs Weston, Born in 2 Oct 1882 and died in 19 Nov 1964 Oakland, California. Worked as a Mechanical Engineer for the Southern Pacific Company, Penelope included some old photos from the 1920's with the bio. The San Fracisco_Public Library has a collection of color slide by Milo and his daughter Clara M. Weston Martell (b.1918 d.2001, Penelope's Mother, Father:Gerald Martell) from 1939-1940.the Weston family lived on Ashby Avenue in Berkeley, Alameda, California. Son William H Weston (b1921). other Daughter Charlotte E Weston (c1923). California https://oac.cdlib.org/findaid/ark:/13030/c8x06cn7/
  
  • 22.04.08.01/M440 - K&E 4053-3 all-glass cursor with copyright 1891 manual. To gallery (manual is in better condition than the one in K&E Volume 2).
  • 22.04.08.02 - Post Hemmi 1445 8" bamboo mannhaeim with all-plastic cursor. dcOH. Aug 1964. To gallery
  • 22.04.08.03/M441 - Henry Herbert Hyde Optical Slide Rule (Replace and add manual to American II)
  2022.04.07.01 - Received gift of Post 1462 (Roos) c1945 white braces, from Gary Virkler of Rome, New York. Sent by error.
  2022.04.03 - Finished compiling/publishing the pages for the latest Volume 24 - "Nederlandse Rekenliniaal Handleiding" the first of two Dutch volumes in the ISRM book series.
  2022.04.02 - People wSRs - Added images from a Steam Locomotive video and the 2022 movie "Moonfall".
  2022.03.29.01 - Received Wisconsin Manufacturers Association 1959 Metal Trades Apprentice Promotional slide rule. Only C & D scale.
  2022.03.26 - Aristo - Added 869 Studio Log images courtesy of Rod Lovett Collection.
  2022.03.26.01 - Received Kohlesh Co. Triplex (made by Nestler) from Paul Laughlin og Jenkintown, PA.Missing glass.
  2022.03.25 - Received Pocket Watch slide rules from Francis A. Smulders of West Simsbury, CT. Belonged to grandfather Albert Crossman.1860-1950. With photo and bio.
  
  • 22.03.25.01 - Cercle a Calcul de a Boucher 1885
  • 22.03.25.02 - Schacht & Westerich Technischer Zeichenbedarf c1900
  • 22.03.25.03 - Cummulative Turn Counter - Unknown brand.
  2022.03.24/M - Received 11 manuals in the Dutch (Nederlandes) language from Otto van Poolje for upcoming Volume 24
  2022.03.22 - Ephemera w/SRs - Added 20+ new images, mostly from Carnegie Institute of Technology yearbooks from 1941-1969. Up to 640 images.
  2022.03.22 - People wSRs - Added 32+ new images, mostly from Carnegie Institute of Technology yearbooks from 1941-1969. Up to 890 images.
  2022.03.20 - Received unbranded Engineering Instruments (Lawrence). Late version of rear equivalents. from Debra Scheidt of Fenton, MO. To gallery
  2022.03.19 - K&E Specialty - Added K&E Chemist Slide Rule All-glass cursor Lot#98. Belonged to George Hugh Kennedy.1908-1989. 2022.03.17 - Received gift of slide rules From George H. Kennedy Jr. of Venice, Florida.
  
  • 22.03.17.01 - K&E ChemistSlideRule All-glass cursor Lot#98. Belonged to father George Hugh Kennedy.1908-1989.sleeve marked R&PC Co.Indiana, PA. to gallery.
  • 22.03.17.02 - Dietzgen 1734 Microglide Decimal Trig Log Log sn190034. in Post 1460 Versalog sleeve..Duplicate [same as 14.10.15.01]
  2022.03.16 - Slide Rule Instructions Library - Published INDONESIAN Slide Rule Instructions, 332 pages. Paperback went through but Amazon is blocking the HardCover.
  2022.03.15.01/M - Received gift of Concise 320 circular slide rule and conversion table from Diane Wilson of Lynchburg, VA. Duplicate.
  2022.03.14 - Received a donation and gift of slide rules belonging to Peter Douglas Weiner P.E, Ph.D 1929-2015. gifted by his wife Karen Harvey Weiner Texas an Maryland.
  
  • 22.03.14.01 - K&E Dec-ilon 68-1100 sn003785 Weiner Name written on sleeve flap.- duplicate
  • 22.03.14.02 - Dietzgen 1746 Maniphase Multiplex SN 707424 Missing one glass. Weiner Name written on sleeve flap. - to gallery [duplicate of 13.07.03.19 sn703397]
  • 22.03.14.03 - Dietzgen 1732 Maniphase Multiplex Decimal Trig Log Log sn565680 one glass cracked. Alternate trig scale label (same as 17.07.15.01) duplicate
  • 22.03.14.04 - Simliform Co.(Acumath) Spring design slide rule to acumath with biogallery
  • 22.03.14.05 - Post 1460 Versalog sn313799.- duplicate
  2022.03.12 - People w/SRs - Added 5 photos, Indonesian Undergraduate and Zeppelin Slide Rule in historical images showing the slide rule(s).
  2022.03.12 - Aerospace - Added Zeppelin Slide Rule made by Nestler and supporting historical images showing the slide rule(s).
  2022.03.11 - SR_WhosWho - Added Dr. C.(Cees) de Galan (1932-1987). Dutch economist and scholar. Wrote the book:"How Do You Work With the Slide Rule?" in 1942
  2022.03.11.- Netherlands - Added Kring Historische Rekeninstrumenten (Dutch Circle for Historical Calculating Instruments) logo and link at top.
  , 2022.03.10.02 - Received Aristo 1068 50cm Studio Log Log. with Nr. 1367 linear scale insert. with sleeve..
  2022.03.10.01 - Received Aristo M85 Electronic Slide Rule Calculator. Two battery beam terminals broken, repair with a pieces of pocket watch springs. Works.
  2022.03.09 - Received generous donation from Michael Frey of Newmarket,New Hampshire. ISRM's first GOLD STAR patron Friends of the Museum!.
  2022.03.06 - Began working on building Volume 23 Indonesian Slide Rule Instructions from scans of 4 books provided by Marvin Clarence.of Jakarta.
  2022.03.05 - Received Post 1460 Versalog II Green Cos. No serial number, no date code. with manual from Jim S. Allenof North Salt Lake City, Utah. duplicate
  2022.03.02 - SR_WhosWho - Added Richard Delamain (1641), Anne Fisher (1719-1788), Sir Isaac Newton.
  2022.03.02 - SR_WhosWho - Added Jorge Luis Victoria of Buenos Aires, Argentina.
  2022.03.01 - Received gift of a large number of 10in, 8in, 6in slide rules and addiators from Philip E. Stanley of Worchester, Mass.
  
  • K&E Column Cursor 1913 (Indicator) model GL in box for 4088 size stock. (put on c1903 4076 Duplex 15.09.27.05 Gifted by Bob Otnes)
  • 22.03.01.01 - K&E N4133 Roylance 8in slide rule. to gallery
  • 22.03.01.02 - K&E 4088-2 8in Duplex sn 316259 New Improved Cursor to gallery
  • 22.03.01.03 - K&E 4088-2 8in Duplex Lot #94 Column Cursor 1913 to gallery
  • 22.03.01.04 - K&E 4065-T 8in Duplex Lot #8 All-Glass Cursor to gallery
  • 22.03.01.05 - K&E 4088-2 8in Duplex sn242068 All-Glass Cursor to gallery
  • 22.03.01.06 - K&E 4035-2 8in Aluminum Cursor Lot #109 1906-1913 to gallery
  • 22.03.01.07 - K&E 4035-2 8in All-Glass Cursor Lot #395 1906-1913 Duplicate
  • 22.03.01.08 - K&E 4053-2 8in New Improved Cursor Lot #115 Needs Side K scale cursor (ISRM Replica?) to gallery
  • 22.03.01.09 - K&E 4053-2 8in Aluminum Cursor "K" on side w/hairline Lot #314 to gallery
  • 22.03.01.10 - K&E 4053-2 8in Aluminum Cursor "K" on side w/hairline Lot #76 Duplicate
  • 22.03.01.11 - K&E 4053-2 8in Lawrence 10-B Magnifying Cursor "K" on side w/hairline Lot #376 NIC Side K scale cursor Duplicate
  • 22.03.01.12 - Hemmi 136 Sytem Darmstadt 6in side trig scales dc JFA to gallery
  • 22.03.01.13 - Unknown German/USSR 8in w/ 3 hairlines to gallery
  • 22.03.01.14 - Lawrence Engineering 8-B "The Peters Company" on sleeve - Duplicate
  • 22.03.01.15 - K&E 4051 20in Mannheim 1924 All-Glass Cursor sn105203 Black cardboard sleeve to Gallery
  • 22.03.01.16 - K&E 4053-5 20in Mannheim All Plastic metal Framed Cursor sn480281 1961 Green cardboard sleeve to Gallery
  • 22.03.01.17 - K&E 4088-3 (1913) with Column Cursor.Lot #96 - to Gallery
  • 22.03.01.18 - K&E 4071 (1914-115) Duplex Lot #62 All-Glass Cursor - to gallery
  • 22.03.01.19 - K&E 4088-2 8in Duplex sn241151 All-Glass Cursor 1922-1935 to duplicates
  • 22.03.01.20 - K&E 4070-3 10in Duplex New Improved Cursor sn829784 Leather sleeve, Replace ISRM 13.10.07.08 Belonged to Alfred W. Ravenings. West Springfield, Mass. U.S. Patent 2,001,398 May 14, 1935 "Air Deflector and Water Circulator". to Gallery
  • 22.03.01.21 - K&E N<4100> Stadia sn160503 All-Glass Cursor Black sleeve Missing flap. to Gallery
  • 22.03.01.22 - K&E 4054 Favorite 1901-1925 metal box cursor Lot #421 to Gallery
  • 22.03.01.23 - K&E 4041 Mannheim All-Glass Cursor Black sleeve Lot #89 unusual screws. to duplicates
  • 22.03.01.24 - K&E 4053 10in Polyphase Aluminum Cursor "K" on side w/hairline Lot #687 to Gallery replace S082
  • 22.03.01.25 - K&E N4053-3 10in Polyphase All-Glass Cursor sn145841 early back label (research) brown leather sleeve Name on flap: "Louis C. Schoenherr 12-25-26".(possibly Michigan b.1906-d.1987 Michigan) Christmas present. to Gallery?
  • 22.03.01.26 - K&E 4080-3 log log duplex 2nd variation. sn551696 1937 No K&E logo. Black LL00, LL0 scales. cracked cursor block. marked Norman H. Meyers to Gallery
  • 22.03.01.27 - K&E N4041 Mannheim All-Glass Cursor Black sleeve sn122676.early equivalents label. to gallery
  • 22.03.01.28 - Albert Nestler No. 21 Darmstadt c1937 (edge scales). riveted sscales. had Faber-Castell 1/98 sleeve - duplicate
  • 22.03.01.29 - Albert Nestler No. 10 Darmstadt c1944. Black hard sleeve. to gallery
  • 22.03.01.30 - Novatni Paper Box Board Rule - to gallery
  • 22.03.01.31 - American Blueprint Co. NY. Military Slide Rulke , brown leather sleeve. Marked "B BTRY" (B- Battery) - duplicate
  • 22.03.01.32 - Micronta 150 Duplex Decitrig Log Log dc L.K-4 brown leather sleeve - duplicate
  • 22.03.01.33 - Pickett Model N2-T - LogLog Speed Rule Dual Base Extended Range - Brown leather sleeve - to Gallery.
  • 22.03.01.34/M450 - Pickett N904-ES Decimal Keeper in Retail box. Square braces, flat lens, Round black logo - to gallery
  • 22.03.01.35 - Pickett 803-T Dual Base Log Log Standard Range, Square braces, flat lens, Round black logo - to gallery
  • 22.03.01.36 - Pickett N904-ES Trig and Decimal Keeper Speed Rule, scratched lens. Duplicate
  • 22.03.01.37 - Pickett N902-T Trig Modern Logo, Curved Braces.Convex lens. Northeast institute of industrial technology boston ma Logo - to gallery (replace 10.12.12.05 if found)
  • 22.03.01.38 - Pickett Model 4 Vector hyperbolic loglog (1949) sn05I0017 Magnesium V2 - Duplicate
  • 22.03.01.39 - Pickett Model N4-ES Vector loglog (1959) aluminum - Duplicate
  • 22.03.01.40 - Pickett N1010-ES Trig no DI scale on back. 10-10-Es scale set.
  • 22.03.01.41 - P.I.C. "Junior" Mannheim Basic shool slide rule - To gallery
  • 22.03.01.42 - Unique Brighton Slide Rule - Only one-half the sleeve - duplicate
  • 22.03.01.43 - Unique Universal I Slide Rule - duplicate
  • 22.03.01.44 - Dennert & Pape Aristo 966 Multilog Duplex - To gallery
  • 22.03.01.45 - Nestler 0239 27cm dc768 Green Slide - To gallery
  • 22.03.01.46 - K&E GP12 68-1565 1967 Simplex Style with black sleeve - Duplicate Replace 09.01.12.53
  • 22.03.01.47 - Charvoz-Roos SR-111 Trig-O-Log faded Red Scale labels.- Duplicate
  • 22.03.01.48 - Acumath Connecticut Spring Corp Spring Design - c1955 - Version 3 - Duplicate
  • 22.03.01.49 - Relay DT-1015 Trig Duplex dcH.S-1 - Duplicate
  • 22.03.01.50 - Post 1460 Versalog sn403374 dcNC (march 1963) green COS one cracked glass (restored). Tarnished braces. Black sleeve - Duplicate
  • 22.03.01.51 - Post 1446 Mannheim early with quot & prod preWWII no date code - Duplicate
  • 22.03.01.52 - Faber-Castell 67/22R Disponent with addiator Duplicate
  • 22.03.01.53 - Faber-Castell 67/98Rb Elektro with Addiator, no sleeve - to gallery
  • 22.03.01.54.X - Faber-Castell 67/87R Rietz with addiator, dc 1-53, green sleeve- to gallery deaccessioned 8/23
  • 22.03.01.55 - Faber-Castell 63/91R Rietz with addiator, metal cursor, no sleeve, with stlylus - to gallery
  • 22.03.01.56 - Faber-Castell 67/22Rb Disponent de bosilla.(Spanish version) with addiator, dc964, zippered sleeve with stlylus - to gallery
  • 22.03.01.57/M451 - Marcantoni 12.5 RE Electro, green box, brown sleeve - To gallery
  • 22.03.01.58 - Nestler 12B Magnifier lens no scale in well - to gallery
  • 22.03.01.59 - Nestler 12 1923 linear scales on back. sleeve with felt liner - to gallery
  • 22.03.01.60 - Marcantoni 15 R Wood stock - To gallery
  • 22.03.01.61 - Dietzgen 1755P Mannheim in hard cardboard sleeve - To gallery
  • 22.03.01.62 - Nestler 22 Rietz (pocket Version of No23) - To gallery
  • 22.03.01.63 - Nestler Polymath-Duplex 0129 (pocket Version of 0292) - Replace P131 to gallery
  • 22.03.01.64 - Hemmi 66 C1932 15cm C-Cursor - To gallery
  • 22.03.01.65 - Hemmi 149 duplex dcLH - to gallery
  • 22.03.01.66/M454 - Hemmi P37 (japanese language labels) - to gallery
  • 22.03.01.67 - Post (Hemmi) 1461 Pocket Versalog, dcRF (1967) no sleeve. has hole drilled in it. - Duplicate
  • 22.03.01.68 - Post (Bruning) 1444P Nothing on back - Duplicate
  • 22.03.01.69 - Marcantoni Compressed Air Tool Pressure Calculator - To gallery
  • 22.03.01.70 - Pickett 160-T Microline - Duplicate
  • 22.03.01.71 - Pickett N3P-ES Power Log Exponential, modern Logo, leather Sleeve - Duplicate
  • 22.03.01.72 - Pickett N200-ES Trig Hooked braces, Modern Logo.Pocket clip sleeve - Replace P076 To gallery
  • 22.03.01.73 - Post 1442 (Roos) Duplex, white braces. Dual 5/10 c1945 - Duplicate
  • 22.03.01.74 - Graphoplex "CALCRUDE" Petroleum Viscosity Nomograph - to gallery
  • 22.03.01.75 - K&E 4097C Ever-There sn32887 Pocket V2 1936-1951 Replace P150- to gallery
  • 22.03.01.76/M455 - K&E 4097B Ever-There sn144512 Pocket V2 1936-1951 Replace P150- to gallery
  • 22.03.01.77 - K&E 4150-1 Pocket duplex sn159793 K&E logo - to gallery
  • 22.03.01.78 - K&E 4035 Lot606 All-glass cursor - replace 13.05.05.01
  • 22.03.01.79 - K&E 9068 Doric sn8588 Pocket duplex - duplicate
  • 22.03.01.80 - Hemmi 34RK 5-in scale Mannheim dcFI Sep1955 Nissei C. Ltd. - to gallery replace Post 1444k MIOJ in hemmi gallery
  • 22.03.01.81 - Hemmi 32 w/Magnifier 4-inch scale dcCI Sep1952 - Replace P140 to gallery
  • 22.03.01.82 - Micronta 505 dcH.K-2 13cm - Duplicate
  • 22.03.01.83/M452 - Engineer's 5500-S dcRS-9 - Add to Gallery
  • 22.03.01.84 - Kutsawa No.883 Darmstadt Japanese Unbranded - add to Japan gallery
  • 22.03.01.85 - K&E 4150-1 Doric sn1627, "A&B Smith Co." Promo on sleeve - Duplicate
  • 22.03.01.86 - K&E 4098A Ever-There sn91068 Pocket K&E and model number printed in black KE- to gallery
  • 22.03.01.87 - Aristo 870 Multilog Pocket Duplex dc2LST1 1973 gray plastic blocks, brown sleeve.. last version. to gallery
  • 22.03.01.88/M453 - Aristo-Puck 810 10cm dcG581 NIB "Heraeus" promo on back and sleeve. "Made in Germany" printed in red. - to gallery
  • 22.03.01.89 - Aristo-Rietz 89 13cm dcG6020 1960 "Cobenam" promo on back. Black "Made in Germany" - to gallery
  • 22.03.01.90 - Aristo-Rietz 89 14cm dc3FL18 "M-A-N" promo on back. Black "Made in Germany" - to gallery
  • 22.03.01.91 - Aristo-Rietz 89 14cm dc5926 1959 "FRGERSTA - Sweden" promo on back. Red "Made in Germany"- to gallery
  • 22.03.01.92/M456 - Kingson Slide Rule, all-aluminum stock, made in hong kong.
  • 22.03.01.93 - W.H. Smith Simplified Rietz, EnglanfDuplex Stly - Duplicate
  • 22.03.01.94 - Unique Junior Slide Rule, used for training. Code J, USRC - to gallery
  • 22.03.01.95 - Unique Florida Slide Rule NoFH USRC - to gallery
  • 22.03.01.96/M458 - Unique Craft Slide Rule, for Cost of Lumber (5 page manual) - to gallery
  • 22.03.01.97 - Blundel BRL P15 Pocket Slide Rule - to gallery
  • 22.03.01.98 - UTO 604 Trig Salesman demo pouch - to gallery Replace REF
  • 22.03.01.99 - UTO 605 Mannheim Salesman demoFlat lens. pouch- to gallery Replace REF
  • 22.03.01.100 - UTO 601 V1 Metal Blocks Cursor Hoffman, "Industial And Engineering Chemistry" promo - to gallery replace P059
  • 22.03.01.101 - X-Act 222P Metal Cursor 11cm Denmark - To Nordic gallery (new brand)
  • 22.03.01.102 - X-Act 222P ALVIN plastic Cursor 5inch Denmark - replace Alvin 222P 09.01.12.05
  • 22.03.01.103/M459 - Diwa 601 Rietz 11cm/4.Metal Cursor (instructions are for 621/631) - top gallery
  • 22.03.01.104 - Newton Engineering Services Inc, pocket protector with Bruning 2401 SR. Hung On Demo Picketts.
  • 22.03.01.105 - Logarex 27103 Rietz Duplex Koh-I-Noor Czechoslovakia - To Gallery. Replace P183
  • 22.03.01.106 - Reiss DDR Darmstadt has poor movement to gallery, swap with 09.01.12.108 and put that one in duplicates.
  • 22.03.01.107 - Reiss DDR Darmstadt
  • 22.03.01.108 - Pedigree by Empire pocket mannheim, Version 2. Red text both sides of slide.- Duplicate
  • 22.03.01.109 - Pedigree by Empire pocket mannheim, Version 2. Red text one sides of slide.- Duplicate
  • 22.03.01.110 - Lawrence 8-L Voltage Drop Calculator, Geo. Worthington Co. Electrical Division - To Lawrence gallery
  • 22.03.01.101 - Fractomater Addiator large format 11cm x 17cm x 8mm - to gallery
  • 22.03.01.102 - Addiator large format in metal clamshell case currency conversion - to gallery
  • 22.03.01.103/M460 - Arithma Addiator with Stylus - duplicate
  • 22.03.01.104 - Arithma Addiator, missing Stylus no sleeve - duplicate
  • 22.03.01.105 - Addfeet Junior Addiator System with stylus, has 1/2 digit column. - duplicate
  2022.02.28 - SR_Terms/Encyclopedia - Spanish version now available courtesy of Jorge Luis Victoria of Argentina and Jorge Zazza (ARC's webmaster) of Spain.
  2022.02.28 - Ephemera/Comics/People - Added 15 new finds, contributed by Foo Cheo Ming, Marvin Clarance and George Anderson.
  2022.02.28 - Received donation for Jeffery Stocker, now a patron friend of the Museum.
  2022.02.28.01 - Received A. Lietz No. 3054N, Listed in 1928 Lietz catalog. Celluloid scale on One side of slide has detached and is 1/78inch shorter than other scales.
  2022.02.28.02 - Received Post 1446 Made in Japan (scratched out) Pre WWII.Duplicate
  2022.02.27.01.X - Received Pickett Model 4-ES Dual Base Log Log Vector Hyperbolic 1stVersion Aluminum Rounded Steel Braces, flat lens
  2022.02.26 - SR_Terms/Encycopedia - Added Spanish translation provided by 2022.02.26 - Demonstration - Added Eugen Dietzgen teaching slide rule phot provided by Marty Gierke, of Stewartstown, PA. c1962. His father Earl Gierke used in the classroom when he taught math at what is now the University of Wisconsin Stout.
  2022.02.25.01 - Received Sans & Streiffe No.310 Log Log
  2022.02.21 - United States/Precision Scale - Replaced 1751 Log Log 10 Hyperbolic.and 1752 Log Log e Hyperbolic. Photos provided by Marc-Yvon Comeau Montreal, Quebec, Canada.
  2022.02.22 - Nestler - Added Albert Nestler No.13L 8in(20cm) Manheim. Belonged to David Alexander Liddle (Scotland 1919-1985). Photos provided by daughter Janet Scott.
  2022.02.22 - Hemmi - Added J. Hemmi's Slide Rile Model 3 Electro. Belonged to C.W. Sewell, Designer of the 21/2-litre Lagonda Bentley. Photo provided by grandson Scott Pattinson.
  2022.02.20 - Received donation from Bruce MacNaughton now a patron friend of the Museum.
  2022.02.18 - Dietzgen - Added Dietzgen 1759B 1914-1915. Retored missing cursor with an ISRM replaica all-glass cursor. Belonged to William Earl Bikle
  2022.02.17 - United States - Added A. Lietz 2976 from 1928 that was made by Nestler. Owned by Morris E. Bergstrom Gift of nephew, Rand Huggett of Sutter Creek, CA.
  2022.02.17.02 - Received gift of Pickett N500-T HI-LogLog from Randolph J. Young of Maineville, Ohio.Replace 14.07.02.69 (Two Sterling 584 included. To loaners)
  2022.02.17.01/M439 - Received gift of A. Lietz 2976 slide rule c1928 (Nestler) with instrction book. gift of Ran Hugett family, Sutter Creek, CA. Belonged to Morris E. Bergstrom (abt1899- ?), the husband of Rand's aunt, Margaret Bergstrom. So he was uncle to Rand. Morris E. Bergstrom was an engineer and draftsman in the 1930’s and lived in Los Angeles, California. He attended correspondence school through ICS.
  2022.02.17 - Concise - Added Sama & Etani EE--112 Reactance Tabkles, with Western Electric Promo . Gift of Robert Muarer, Exton, PA.
  2022.02.16 - EastEurope - Added Logar (Hungary) 4617-57 pocket. Gift of Philip Stanley
  2022.02.15 - Received gift of slide rules and a donation from Stephen L. Kozerowitz of Huntley(85), Ill. in honor of his father Max Kozerowitz and Uncle Joseph Ross. With photo and bio.
  
  • 22.02.15.01 - K&E 4088-3 Polyphase Duplex sn450985 owned by his father Max Kozerowitz who purchased it in 1934 Community College NY. Given to son in 1955. Replace 13.07.03.13
  • 22.02.15.02 - K&E N4053-5 20" Mannheim sn770978 owned by his uncle Joseph Ross, - duplicate
  2022.02.15 - Germany - Moved images from Misc/Euro folder to Germany/ folder. Fixed IWA section.
  2022.02.15 - Germany - Added Ecobra Logo and models 1260 all-aluminum and 1461 Painted over aluminum. Gift of Philip Stanley
  2022.02.14 - SR_Rescue - Added 75 pocket slide rules to adoption spreadsheet.
  2022.02.13 - Dietzgen - Added[Replaced] Cat. No. 1749 Style-M Maniphase-Multiplex Decimal Trig Type Rule [REF S355] made in Germany
  2022.02.13 - Nestler - Added Albert Nestler A.N. Initials pre-Logo 1901-1902.
  2022.02.12 - Received several slide rules from various sources. Made possible by a gift from Andreas Fassbender.
  
  • 22.02.12.01 - Weber 4286-D Pocket made in Germany
  • 22.02.12.02 - Dietzgen Cat. No. 1749 Style-M Maniphase-Multiplex Decimal Trig Type Rule made in Germany
  • 22.02.12.03 - Albert Nestler A.N. Initials pre-Logo 1901-1902. cracked glass repaired with glass adhesive
    
  2022.02.11 - Acumath - Added[Replaced] Model 12 Yellow stock pocket duplex [P114] In Plastic Box. Gift Of Philip Stanley
  2022.02.11 - MiscUSA - Added Charles Bruning 2398 Dual-Faced Duplex. Gift of Philip Stanley
  2022.02.11.01/M - Received Concise Sama & Etani Model EE-112 Reactance Nomograpgh, Western Electric Promo, Nat'l Engineer's week1969, from Robert Maurer of Exton, Pennsylvania.To gallery.
  2022.02.10 - China - Added Flying Fish 1003 advanced vector hyperbolic. in Sealed factory bag.
  2022.02.10 - Pickett - Added model 600 Log Log #81 artwork. Philip Stanley Collection.
  2022.02.10 - Faber - Added 152/82 Dstab with Pink scale highlights
  2022.02.10 - EastEurope - Added Logar (Hungarian) 1471-57.
  2022.02.08 - KE_Standard - Added N4081-3 sn466804.1949 scale set. Leroy Hausler collection. 4058W all-glass cursor (1937)
  2022.02.08 - UnitedStaes - Adde new brand Kolesch Co. with 4 specimens. 3 images provided by Mike Syphers
  2022.02.05 - SR_Rescue - Added 50 new slide rules to be adopted.Make a reasonable (and generous) offer to support the museum
  2022.02.03 - KE_Specialty - Added 4139 Cooke Radio Rule - sn237717 with magnifier and rare sleeve. Gift from Dennis H. Pack
  2022.02.03 - Aerospce - Added Martin Space Rule and bio of the designer, with supporting images, Michael Stoika.
  2022.02.03.01 - Received Kohlesh Co. 2580 15in Mannheim Type Slide Rule
  2022.02.03 - Fundraiserr - Received generous donatuion from Andreas Faßbender, Germany, a Friend of the Museum
  2022.02.02.01 - Received Martin Space Rule 1960 prototype from Jane Kennedy of Baltimore, MD, daughter of the designer, Michael Stoika..
  2022.02.01.01/M - Received K&E 4139 Cooke Radio Slide Rule sn237717 w/ magnifying cursor in sleeve pouch. from Dennis H. Pack of Winona, MN 55987. in honor of his friend Robert W. Young (W4, USCG). New to gallery.
  2022.01.27 - KE_Standard - Added[Replaced] N4053-3 sn473568 variant of model # and K&E placement on slide.[S095] Gift of Bob Dehn Collection.
  2022.01.26 - BOD - Added procedure for logging duplicate slide rules in a spreadfsheet for the adoption Process
  2022.01.26 - MiscUSA - Added Tobe C. Duetschmann pocket slide rule with company background.
  2022.01.20 - Cafepress Added wall posters and decals that show the entire Keuffel & Esser slide rule product time line from 1881 through 1975. Designed by Michael H. Frey for the International Slide Rule Museum.
  2022.01.20 - SR_Dates - Added Keuffel & Esser slide rule product time line from 1881 through 1975. Designed by Michael H. Frey for the International Slide Rule Museum. Updated Paul Ross' Frederick Post Timeline.
  2022.01.19 - Restorations - Added additional models and images of ISRM replica cursors and lens, gifts of Sun (Forster) Fang.
  2022.01.15 - Received donation from Andrew Rinehart, now a Friend of the museum.
  2022.01.05 - Corrected some duplicate accession numbers discovered by Michael Frey, who is working on a spreadsheet of the ISRM archives shown in the galleries.
  2022.01.03 - Received generous donation from Stephen Seale of Nashville, Tennessee. (Check dated 12-31-2021 to be in the tax year)
  2022.01.02.01 - Received gift of Dietzgen 1759-B slide rules from Anne Bikle of Seattle, Washington. Belonged to her grandfather William Earl Bikle: Birth: 16 JUL 1898 in Hagerstown, Washington Co., Maryland. Death: 25 DEC 1968,worked as a logistics engineer for the railroads passed down to her father Frederick Bikle.
  
  • 22.01.02.01 - Dietzgen 1759-B c1920 with Mannheim K scale on edge. 1936 K&E metal framed cursor with side hairline.
  • 22.01.02.02 - K&E N-4053-3 sn20625 c1924.Rare Model number marking = N<4053-3>. Missing all-glass cursor. Leather sleeve missing flap.

  ---

  2021.12.21 - Compiling list of Heritage slide rules gifted or acquired. These are specimens with a known provenance or history.
  2021.12.20 - Restoration - Added new gallery/web page of restoration ideas, notes and parts.
  2021.12.20 - Compiling list of Heritage slide rules gifted or acquired. These are specimens with a known provenance or history.
  2021.12.20 - Pickett - Added photo of Dorinda J. Wong of Pleasanton, CA with 904-ES Decimal Keeper.
  2021.12.19.01 - Received a Weber No. 4288 with 3 hairlin cursor. Early Nestler Rietz. Good aluminum framed.cursor. To adopt.
  2021.12.18 - Created a separate gallery for Gilson slide rules which were previously displayed in the circular slide rule gallery. The navigation menu, Brand Index, and home pages have been modified accordingly.
  2021.12.18.01/M - Received c1925 Dietzgen Mannheim Manual with Albert Nestler, System M. Rietz DRP 181110 (1902) DRP 173660(1905 ), Made in Lahr in Baden, Germany The cursor glass was replaced by a home-made thin plastic version.This is the first model that A. Nestler sold.
  of PVC
  2021.12.17 - Received hundreds of 3D printed cursor blocks for K&E and laser cut plastic cursor lens, Gift of Sun (Forster) Fang of Guangzhou, China. a Friend of the Museum.
  2021.12.17.01 - Discoverd a Japanese clone of a Sterling 684 Senior Mannheim. Identical except for the "JAPAN" raised on the back brace.
  2021.12.16.01/M - Received Tower Branded Addiator, Made in Germany
  2021.12.10 - PocketWatch - Added Fowler Vest Pocket Long-Scale Calculator. 7cm diameter circa 1956.with instructions.
  2021.12.09.01/M437 - Received Fowler Vest Pocket Long-Scale Calculator. 7cm diameter circa 1956. Was found in an estate sale in the pocket of a man's suit coat. The coat cost $5.
  2021.12.09 - SR_WhosWho - Added John F. Morrison designer of the Morrison Radio Slide Rule and Benjiman B. Bauer inventor of the Shure Brothers Reactance Slide Rule, and Prof. Andreas Poschinger, doner of numerous slide rules to ISRM.
  2021.12.08 - Aristo - Added 0969 Multi-Rietz dcHFL5 1967, Gifted by Prof. Dr. -Ing. Andreas Poschinger of München, Germany.
  2021.12.08 - K&E_Specialty - Added model 4138 Morrison Radio Engineering slide rule. Michael O'Leary scans from Clark McCoy. Belonging to the John Reed Collection. Note: Digitally repaired cracked cursor.
  2021.12.08 - Concise - Added Sama&Etani Conray Radiological Tables And Circular Slide Rules Gift Of Bruce Healy
  2021.12.07 - Sterling - Added specimens from Ross Llewellyn and William Lisowski and images gleaneed from Ebay and restructured gallery between Sterling Plastics era and Borden Chemical era.
  2021.12.04.01.- Received Gift of Sterling Plastic Co. (585) ©1968 Deluxe Mannheim slide rule in original retail card, belonging to Ross Llewallyn of Atlanta, Georgia.
  2021.12.03.- Facebook Fundraiser - Goal $2000+. $220 raised - Donors so far are Michael Konshak, Jialin Zhang, Dylan Thinnes, Jean-Claude Simon, Chr Wilhelm, Steven Konshak, Dan Wilson.
  2021.12.01 - Received donation from Kenneth Yanoska of Arcata, California. Now a patron Friend of the Museum.
  2021.12.01 - Received Gift of slide rules from Prof. Dr. -Ing. Andreas Poschinger, Hochschule München, Fakultät 05, Lothstraße 3, 80335 München, Germany.
  
  • 21.12.01.01 - Aristo 0929 Multi-Rietz dcHFL5. To Gallery (Replace S018).Original owner: Kuchenbuch August Hildesheim, Leunissh.26
  • 21.12.01.02 - A.W. Faber 1/87 system Rietz To Gallery (Replace S505).Original owner: Kuchenbuch August Hildesheim, Leunissh.26
  • 21.12.01.03 - A.W. Faber 1/75/375 system Rietz To Gallery .Original owner: Kuchenbuch August Hildesheim, Leunissh.26
  2021.11.30 - Hemmi - Added J. Hemmi Model 82 pocket (1932-1937). Gift of Graham L. Jones, Cambridge, UK
  2021.11.30 - Nestler - Added Nr. 0123 Version 1 pocket Rietz. Gift of Graham L. Jones, Cambridge, UK
  2021.11.29 - Ephemera/People W/SRs/Comics - added 10 images found in Colorado State University (my alma mater) digital archives.
  2021.11.28.01 - Received Triso-Rietz 6502 (Made in Slovenia) Slovenj Gradec - Gift of Christian M. Hamann of Berlin, Germany, currently in Pacific Grove, CA.
  2021.11.24 - Received Gift of slide rules and slide rule books from Graham L. Jones of Fulbourn, Cambridge, U,K.
  
  • 21.11.24.01 - Hemmi 82 Bamboo Slide Rule, Patent #22129 British Patent #107562 Brevete S.G.D.G RR track scales. English Equiv. To Gallery.
  • 21.11.24.02 - Nestler Nr. 0123 pocket age fading on one end. Metal Framed cracked glass lens. Add to Gallery.
  • Mxxx - How do You Use a Slide Rule (For Non-Mathematicians) by Arthur A. Merrill, 1961 Dover Publications, NY
  • Mxxx - The Slide Rule and How to Use it, by Charles Hoare, CE, 1942, 16th printing, The Technical Press, London
  • Mxxx - The Slide Rule for Students of Science and Engineering by T.G.C Ward and B.G. Blakely.1955, 1961. English Universities Press
  2021.11.23.01 - Received Concise Sama&Etani Conray Radiological Tables And Circular Slide Rules Gift Of Bruce Healy
  2021.11.18.01 - Received Panasonic JE-5001U Electronic (Slide Rule) Calculator.sn63100267
  2021.11.17 - Corrected weeklt meeting times to 4AM UTC
  2021.11.17 - Ephemera/People wSRs - Added 5 images
  2021.11.16 - SIC - Added 300B 111cm dia circular, 4030 pocket, 5510 Astrolog. Gifts of William Lisowski.
  2021.11.16 - Faber - Replaced 8/10 circular slide rule with scan from Marc-Yvon Comeau of Montreal, Canada.
  2021.11.16 - Military - Added Air Navigation Attack Computer Type CPU-73A/P (9 inch Diameter). Arhive photos.
  2021.11.15 - Pickett - Added 101-C Dial Rule Variation 3. It is mounted in the D1 shadow box.
  2021.11.13 - Circular - Did some housekeeping of accession numbers and deleted all Pickett circulars as they were duplicated in the Pickett gallery. Too easy to screw up the record updates.
  2021.11.12 - Military - Added Crichlow Circular Artillery Slide Rule. Corrected data. (Moved from Circular gallery.
  2021.11.12 - UnitedStates - Added Felsenthal FF-6 Logarithmic Calculator (1951), and scan privided by MikeSyphers.
  2021.11.10 - Pickett - Added nine pocket slide rules, Gift from the Phillip E. Stanely Collection, Wayne Keene and William Lisowski.
  2021.11.08 - Military - Added Replica of V2 Rocket Rechenschieber Peenemunde Versuchsanstalt Grossendorf Westpr entwinkeld.
  2021.11.08 - PocketWatch - Added Halden Calculex Version 2
  2021.11.08 - UnitedStates - Added missing views and background to Precision Scale 1751 Log Log 10 Hyperbolic. Courtesy of Stephen Kay.
  2021.11.07 - Charvoz-Roos - Added PR-32 (Same as Lawrence 250-BT).
  2021.11.07 - Lawrence - Added 250-BT slide #403, Bob Dehn Collection.
  2021.11.07 - UnitedStates - Added two versions of INDECO/DECO slide rules from 1934-1938. Gift of Karen Eccks of La Mesa, CA.
  2021.11.07 - Circular - Added Tavella branded Gilson Midget Binary Slide Rule, gift of Karen Eccks, La Mesa, CA. Edited missing accension numbers.
  2021.11.06.01/M437 - Received INDECO 6" Metal base, plastic scales held by stainless steel stock. With instruction sheet that shows Industrial Engineering & Mfg. Co.
  2021.11.05.01 - Received K&E 4092-5 20" LogLogDuplex sn 468442. Repaired KERCS with parts from 21.08.07.06.
  2021.11.03 - Lawrence - Added American Lumberman 10-D slide rule. Gift of Karen Eccks of La Mesa, CA.
  2021.11.03 - KE_Specialty - Added KE 4095-1 Merchant 6in duplex slide rule. Gift of Karen Eccks of La Mesa, CA.
  2021.11.03 - UnitedStates - Added two versions of INDECO/DECO slide rules from 1934-1938. Gift of Karen Eccks of La Mesa, CA.
  2021.11.03 - Created a Ko-Fi account to received donations. https://ko-fi.com/sliderulemuseum
  2021.11.03 - Received gifts of slide rules and manuals from Karen Eccks of La Mesa, California. The specimen was found in her mother's apartment when she passed in 2017.
  
  • 21.11.03.01/M - K&E 4095-1 6in Merchants duplex sn298391 - to gallery
  • 21.11.03.02 - Lawrence 10-D American Lumberman, Chicago, Illinos, established 1873
  • 21.11.03.03 - DECO (INDECO) Monoface 10 in slide rule - to gallery
  • 21.11.03.04 - Mascot 2.75 in diameter celluloid (warped) duplicate
  • 21.11.03.05 - Gilson Midget 11cm OEM with Tavella branded - to gallery.
  • 21.11.03.06/M - Festus 10-D Mannheim w/magnifyer, 1938 - Scan Ac0-Rule manual for Volume - Duplicate Slide Rule
  • 21.11.03.07 - Lawrence Engineering Service 8-B - slide is stuck - duplicate
  • 21.11.03.08 - Lawrence Engineering Service 8-B - slide is stuck - scrap
  • 21.11.03.09 - INDECO 6in slide rule, crazed lens, blue ink - to gallery
  • 21.11.03.10 - K&E 4081-3 Log Log Decitrig sn651658 has KERCS - to repair
  2021.11.02 - Nestler - Added 1938 Albert Nestler No. 10 with RR Track sclaes.
  2021.11.02 - Thornton/PIC - Added 10 inch Mannheim with R/R track scales, closed trig windows.
  2021.11.02 - Australia - Added White & Gillespie (W&G) Model 476 "DualFace" Trigonometrical. Marked as owned by Eugene (Gene) Andrew Bramhall.
  2021.11.01.01 - Received White & Gillespie Model 476 "DualFace" Trigonometrical. Owned by Eugene (Gene) Andrew Bramhall. (B. 1922 New York D. 1995 Louisiana) Used it at Univ of London. Later lived in Flushing, New York and Pennsylvania. The slide rule made its way to Illinois. Wilson, Margaret Cecily marriage to Eugene Andrew Bramhall, late 1940's, London, England Gene and Maggie met while he was stationed in England during World War II. E.A. Bramhall was in General Patton's Third Army in Europe, 455th Battalion, Headquarters Battery. His serial number was 12060563.
  2021.11.01 - Ricoh - Added Olen TL-366 (No403). Relay No. 403 MIOJ, gift of william Lisowski.
  2021.11.01 - Concise and Ricoh - Added Lafayette 99-7127 (Concise 270) Circular slide rule. Gift of William Lisowski.
  2021.11.01 - United States - Added Jones Metabolism Slide Rule c 1937-1950 and catagory, Stainless Steel. Included company history.
  2021.10.30.01 - Received Aluminum 4 foot demonstration slide rule made by Claridge products & Equipment Inc., of Harrison, Arkansas.
  2021.10.30 - KE_Standard - Added 4070-3 Polyphase Duplex Trig 407962 and 4907-C Ever-There. Originally owned by R.J. Kaplan. Gift of William Lisowski.
  2021.10.28 - Designing process flow chart to give to volunteers for organizing archives uusing OpenOffice. Board of directors recommendation.
  2021.10.26 - Pickett - Added N500-T LogLog (predesessor to the HI-LogLog) gift of Lynn Ingram of Maudling, South Carolina and 1011-ES Spoeed TRig/Exponential _R.E.T.S. (Electronic Institute) Logo on sleeve.
  2021.10.25.05 - Received Pickett 1011-ES Speed Rule Trigonometric/Eponential. National Education Center R.E.T.S R.E.T.S Electronics Institute Logo
  2021.10.25.04 - Received Exxon Company pencil cup slide rule, with metric conversioin slide rule inside windows.
  2021.10.25. - Received two slide rules gift of Lynn Ingram of Mauldin, South Carolina.She used them in college
  
  • 21.10.25.02 - K&E Decilon 10 sn189505
  • 21.10.25.03 - Pickett N500-T LogLog to Gallery
  2021.10.25.01/M - Received Halden Calculex with sleeve and manual. Different variation of sleeve. Replace REF scan from Paul Tarantolo
  2021.10.25 - Charvoz-Roos - Added PSR-200 4inch w/removable magnifyer
  2021.10.25 - K&E_Standard - Addedd{Replaced} K&E 4098A pocket slide rule.[P113]
  2021.10.24 - BrandIndex - Added Wallace Barnes spring design brand and Gibson-Spring. Moved relavant slide rules to these galleries.
  2021.10.24 - Assigned missing accession numbers to 9 Spring design slide rule in the Pickett, Circular and British galleries. Moved from curator's office to archive storage.
  2021.10.22.01 - Received Litronix 2230 Memory Electronic Slide Rule Calculator sn 209361.
  2021.10.21 - K&E_Standard - Added N4053-3 with Magnifier lens sn178642. 4058 Beginners SR with sleeve. Bob dehn Collection.
  2021.10.21 - Nestler - Added 4in and 5in pocket slide rules, 11-R, 11-ZR, 0115, 0115 Electro, 0123, 0140, most are gifts of the Philip E. Stanley Collection.
  2021.10.20 - Nestler - Added 4in and 5in pocket slide rules, 12a, 41 (early), 41, 42, 42Z, 0121, 0123, all gifts of the Philip E. Stanley Collection.
  2021.10.20.01 - Pickett - Received and added Pickett N3-T PowerLog Exponential 1970 from Christopher K Anderson, with bio,Burlington, MA. Replace 14.07.02.63 Gallery.
  2021.10.18 - People wSRs - Added photoof Jacob Jensen provided by Nathan Zeldes and 4 of Nazi aircraft tracking of allied bombers srs.Provided by Andreas Fassbender.
  2021.10.18 - Military - Added two Nestler Aircraft Tracking (Fluggeschwindigkeit) slide rules 10 and 20in cWWII. One is a scan from Andreas Fassbended along with photos of the period.
  2021.10.15.01 - Received Nestler Flugwachkommando Aircraft tracking WWII for early warning.
  2021.10.13 - Acumath - Added Connecticut Spring Corp. Spring Design - Version 2. One-sided braces Finger pocket.and Model Mo. 40 8in Concrete Calculator Pozzolith Promo.
  2021.10.13 - Nordic - Added - Diwa model No's 111, 911, 914, 924. Hoffman UTO-601 CELCO Promo, Hoffman UTO-601 Valerian Promo, Two are gifts of William Lisowski
  2021.10.13 - Hemmi - Added Hemmi 250 Trig dcDE (1953) Early DF scale labeling. Gift of William Lisowski and Hemmi 2662 WWII with A+L scale..
  2021.10.13.01 - Received Connecticut Spring Corporation Slide Rule, all plastic using Acurule design and parts.
  2021.10.12.01 - Received WWII Hemmi 2664 with A+L scale .Defective/broken cursor replaced (same as Post 1452,1456 or Hemmi 50W, 80, 300, etc.)
  2021.10.12 - Post - Added[Replaced] 1452-D Universal [ISRM 14.07.02.48] Gift of Keith Godber Of Burn Selby, UK
  2021.10.12 - Pickett - Added[Replaced] No. 510 Business & Finance (1949), 140-T Microline Red Inv Scales, No.500 Orthophase (new font), 905-ES"A" Texas Speed Rule [S567], N-500-ES Hi-LogLog Modern Logo on right side, N4-ES, N3-ES variations, Retail Box for 120 Trainer. Some were gifts of Jerome Drews, Chris Williamson, Williamb Lisowski, Katherine Champe Jones and R. Kelps.
  2021.10.11 - MiscUSA - Added Gemini Engineering Caliputer catagory and slide rule (ebay photos, US Patent No 2,874, 478)
  2021.10.09 - SR_WhosWho - Added Prof. James R. Bland, (1898-1984) Codesigner of K&E Deci-lon slide rule, with Frank Ardenoy.
  2021.10.09 - Post - Added Versalog 1460 dcQF 1966 green Cos, sn711599 with Versalog book and bio.. Gift of Vietnam veteran Ron Pensel.
  2021.10.09 - Ricoh/Alvin - Added Alvin Eite 1151 LogLogDecitrig dcR.S.-6
  2021.10.06.02/M - Received Alvin Eite 1151 LogLogDecitrig dcR.S.-6
  2021.10.06.01/M - Received gift of Post Versalog 1460 dcQF 1966 green Cos, sn711599 with Versalog book and bio.. Gift of Vietnam veteran Ron Pensel. Replace ISRM 12.06.24.22
  2021.10.05 - Friends of ISRM - Recieved donation from Paul Kauffman Now a patron of ISRM.
  2021.10.05 - Comics w/SRs - Added 8 drawings of students holding slide rules from NJIT 1928-1966 Newark College of Engineering yearbooks.
  2021.10.05 - People w/SRs - Added 60 photos of students and faculty holding slide rules from NJIT 1928-1966 Newark College of Engineering yearbooks.
  2021.10.05.01 - Aristo - Received and posted Aristo 812 dc553 (Occidental Electrical Company, Nogales, AZ). gift of Steve Rigg of Tucson, AZ. Belonged to Edward Taylor Wood ( - 1999)
  2021.10.05 - Relay/Ricoh - posted 5 slide rules, Ricoh 151 (Belonging to Sheridan Tasuno), Omega 151, Layaette 428, Micronta 150 (Radio Shack),Relay 651 8inch Electro.
  2021.10.05 - Received donation from $10.00 USD from Paul Kauffmann
  2021.10.04 - Researched New Jersey Institute of Technology (Newark College of Engineering) Year books from 1928-1972 for images of slide rules.
  2021.10.04 - Received gifts of slide rules from R. Kelps of Niles, MI 49120
  
  • 21.10.04.01 - Pickett 120 Molded Narrow stock - 2nd generation with Retail box. Slide rule to loaners, Box to archive with 120-T of Ed Millis 14.07.03.59. It shows the glued together gray braces version.
  • 21.10.04.02 - Pickett 1010 Magnesium sn2D08424 c1949 to adopt
  • 21.10.04.03 - Pickett 800-T LogLog c1952 yellowed scales aluminum stock external grooves to gallery
  • 21.10.04.xx - Lawrence 10-B no cursor to scrap
  2021.10.02 - Received gifts of slide rules from Debbie, Dick Rose's daughter.
  
  • 21.10.02.01 - Pickett B1 in sealed bag to adopt
  • 21.10.02.02/M - Otis King Model K snY1881
  • 21.10.02.03 - Chinese Flying Fish 1003 to gallery
  • 21.10.02.04 - Fuller Calculator Model 2 Scales of Sines &Logs..Cylindrical Drum (no Base or box) bakelight. sn8776-46 Stanley maker, london.
  • M - The Slide Rule A Practical Manual by C.N.Pickworth tenth edition 1906
  2021.10.02 - People wSRs - row 045 - added photo of NASA X-15 engineers Alphonso Stewart, Ken Iliff, and Dale Reed.
  2021.09.30 - People wSRs - Added multiple images from movies on Amazon. Rickover: The Birth Of Nuclear Power, (Development of the first nuclear submarine) and Griff the Invisible.
  2021.09.30 - Post - Added 1460 Versalog dcUL Dec, 1970, No serial number. With "A" scale prior to calling it the Versalog II.
  2021.09.30 - Nestler - Added ABL Convoy Traffic Separation - dc1976, gift of Andreas Faßbander of Germany.
  2021.09.29 - Nestler - Added model 2010 Basic Mannheim, and No.4 Student 1938
  2021.09.29 - Americas - Lutz, Ferando y Cia, Added slide rules and historical photos related to this Argentina optical company.
  2021.09.29 - Hemmi - Added [Replace] Hemmi 64 with railroad track scales and a C-Cursor
  2021.09.28 - SRM_Friends - Received donation from Michael Mjelde, long term patron of ISRM. .
  2021.09.28 - Nestler - Added 0239 Rietz w/green slide dc 562, belonged to R.P. Crosthwaite, Astronomer.
  2021.09.28 - KE_Standard - Added K&E 68-1892 K12 mounted on desk stand. One-handed operation for disabilities.
  2021.09.27.01/M - Received Bowmar MX-140 Scientific (ESR) Calculator sn 122175. Manual mentions slide rule scales.
  2021.09.26 - Acu-Math - added early Festus Manheim with wood cursor blocks and 1/8inch thick Lucite Lens.
  2021.09.25 - KE_Standard - K&E N4053-2 Polyphase,and Clarence H. Koch (1904-1989) bio, and Colorado Central Power Company history.
  2021.09.23.01 - Received K&E N4053-2 Polyphase, marked by Clarence H. Koch (1904-1989) of the Colorado Central Power Company.
  2021.09.22 - SRM_Friends - Received donation from Richard Burns, a long term patron of ISRM.
  2021.09.21 - Rarities - Added Aston & Mander Charles E. Hoare's Steel Weight Slide Rule 24 inch c1967
  2021.09.21 - People wSRs - Added 3 images from TV series I dream of Jeannie and Voyage to the Bottom of the Sea
  2021.09.21 - UnitedStates/C-Thru - Added Older Logo and No.88 linear slide Rule Gift of Robert Carlisle and S-96 Circular Slide Rule Gift Of William Lisowski.
  2021.09.21 - Concise - Added Model 600-OP Overhead Projector slide rule, version 1, clear plastic. Gift of Robert Carlisle
  2021.09.21 - SR_WhosWho/Aerospace - Added Michael Stoiko, Aerospace Engineer and executive who designed the Martin Space Rule.
  2021.09.21 - MiscJapan - Added Generic Pocket LogLog (ULTEK Quaility High Vacuum Products Promo). Gift of Robert Carlisle. Added acession numbers to 3 David Hecht gifts from 2009.
  2021.09.20.01 - Received Bowmar MX-140 Scientific (ESR) Calculator sn 122175 2021.09.20 - Acu-Math - Added A-900 Log Log, c1950 early plastic duplex design. Gift of Robert Carlisle.
  2021.09.20 - Faber - Added 1/87 Rietz Feb 1958 Variation without scal labels, new equivalents label. Gift of Robert Carlisle.
  2021.09.20 - Unique - Addded[Replaced] Universal I Tacked laminate, Plastic frame cursor[S267] Gift Of Phillip Rodley, NZ
  2021.09.20 - Abaci - Added Soroban beads:1x4x13, gift of Gregory Playle
  2021.09.20 - K&E_Standard - Added 4058 Student's Slide Rule pre 1925, Missing cursor. Gift of Norma Tanner.
  2021.09.20 - K&E_Speciaty - Added Percent Of Accuracy Estimate Slide Rule (Lot 172). JOe Soper Archive.
  2021.09.20 - Sterling - Added model 685 green snd white stock in retail sleeve with label. Removed S232 685.
  2021.09.19 - SR_WhosWho - Added Lawrence J.Kamm, designer of the Decimal Keeper Slide Rule (Pickett 115 & 904). Andrew Alexander Mahoof designer of the Douglas Sky Rule.(Aristo 80123)
  2021.09.19 - Abaci - Added Soroban beads:1x4x15 195x53x15mm in red/black cardboard sleeve, gift of Pam Eaton of Dennis, Massachusettes
  2021.09.18.04 - Received Unisonic_1540D VFD Minimum Slide Rule Electronic Calculator
  2021.09.18.03 - Received rare Festus (pre acu-math) Mannheim slide rule with wood cursor blocks and 1/8" thick plastic lens. Tattered sleeve.
  2021.09.18.02 - Received Dietzgen 1760 all-glass cursor. Conrad Schure Collection.
  2021.09.18.01 - Received C. Hoare Steel Weight slide rule made by Aston & Mander, London.c1875 Conrad Schure Collection.
  2021.09.17 - People wSRs - Added 37 photos from Univ or Toronto Yearbooks, Univ of Manitoba Yearbooks, CSU Yearbook, Bahgdad Univ, scenes from Agents of S.H.I.E.L.D 2021.09.17 - Comics - Added 6 images of university of Toronto yearbook pages
  2021.09.17 - Ephemera - Added 16 images from University yearbook ads.
  2021.09.17 - Calculators - Added 3 pages from Olson Catalog to 1974 ads, Univ of Toronto yearbook Canon F-7 Palmtronic to 1976 Ads,
  2021.09.16 - Ephemera - Added The Mechanical Engineer Pocket watch ads from 1901 and 1909.
  2021.09.16 - Comics - Added four images from the US Naval Academy magazine The Log, Scenes from Hayao Miyazaki's The Wind Rises with slide rules.
  2021.09.16 - People wSRs - Added photos of students from 1965/67 yearbook Univ of Manitoba and WAAF Meterourologists with Pilot Balloon skliderules
  2021.09.15 - People wSRs - Added photos of Virginia Norwood, Bertha Lamme, and slide rule in 1939 World's Fair Time Capsule.
  2021.09.15 - FundRaiser - Receive donations from Edward Brown and Bob Smith-Vaughan now Friends of the Museum.
  2021.09.14 - SR_Rescue - Sent out slide rules adopted by David Wells, Jared Wells , and Bastian Cook.
  2021.09.13 - Germany - Added IWA 0257 pocket PIA-Electronic.
  2021.09.13 - MiscUSA/Lietz - Added 3077 Midget with cover and cat 1938 page. 2971-P Rietz V4 gift of Wayne Farmar, Graphic Calculator Stephenson-Pfahl Hardenability Slide_Rule Gift Of Thomas C. Graham, Jr.
  2021.09.13 - PocketWatch - Added Molter (E. Gronblom) Circular Slide Rule, Scan by Jim Bready - Conrad Schure Collection
  2021.09.13 - Circular - Added Gilson Binary Early Steel version. Originally Conrad Schure Collection. Jim Bready Scan.
  2021.09.13 - Concise - Added Model 46, scan from Bob Adams Collection Australia
  2021.09.12 - SR_WhosWho - Added Arthur Orans (?-1989) founder of the Philomath Int. Slide Rule Society, Andries de Man (Netherlands) and John H. Runnels (USA), Michael Stifel (1487-1567) Mathemetician. Ace Hoffman,- OS Webmaster..
  2021.09.11.01 - Received Executron S874L Red LED Electronic Slide Rule Calculatorsn5307292 Unitrex of Canada, Made in Korea. works uses 2AA batteries 2021.09.10.01 - Received Stephenson-Pfahl Hardenability Slide Rule, gifted by Thomas C. Graham, Jr., President & CEO at Hotwork-USA of Mason, Ohio.
  2021.09.09 - Adders - Restructered gallery page, assigned missing acession numbers. Reimaged thumbnails.
  2021.09.08 - Adders - Added Wizard Calculating Machine, Bob dehn Collection. Updated Ve-Po-Ad entry.
  2021.09.07 - Created mechanical drawings for Post, Hemmi and Picket cursor lens blanks for Fang Sun.
  2021.09.05 - Friends of ISRM - Recieved donation from Steven Furtado now a patron of ISRM.
  2021.09.06.01 - Received Lockheed Electra E6-B (functional) Key Chain. Added to Novelty and Aerospace galleries.
  2021.09.04 - Graphoplex - Added Koh-I-Noor 10010 Techno-Log Duplex
  2021.09.04 - Aristo - Added No.902 Scholar. Charvoz 909 Multi-trig Gift Of Katherine Champe Jones, of Vienna, Virginia.
  2021.09.03 - Germany - Added 20inch/50cm long Joe Klawun Commerz, Nestler System Klawun.
  2021.09.03 - Aristo - Added 20inch/50cm long Aristo-Rietz No.109 1969 version. with 1365 Insert.
  2021.09.02 - MiscEuro - Moved Triso brand from Germany gallery. Added Triso 6501 Rietz, 6502 Rietz, 6504 Darmstadt and 6561 Darmstadt and made a place holder for future 6503. 6501 gift of Philip E. Stanley, 6502 from Prof. Hamann Collection.
  2021.09.02 - BrandIndex - Added Triso from Solenia into the Eastern Europe gallery. It was also part of Yugoslavia.
  2021.09.02 - Received donation from David Wood, now a patron Friend of the Museum
  2021.08.31 - Dietzgen - Added[Replaced] 1765F [P234], 1760A Van Skiver Corp., 1765W Handy [P223/P256], 1774-M Maniphase (Ecobra), 1778 Mulkti Log Duplex [P040]. 1779 PocketLog, 1773 Darmstadt[P200], 1771 Redirule naorrow metal Cursor. Gifts Philip E. Stanley Collection.
  2021.08.31 - Circular - Added Fearns A13 LogLog Circular slide rule. Scan by Michael Sypher.
  2021.08.31 - Dietzgen - Added[Replaced] 1759B w/Magnifier gift of Kathy Champe Jones. B-1734 (bamboo) [S466] and G-1734 (Geroplast).
  2021.08.31 - Received donation from Gabor Holmik of Australia, now a patron Friend of the Museum
  2021.08.29 - Military - Added two Vickers .303 Machine Gun Slide Rules, MK I and MK III. the later gifted by Phillip Rodley of Upperhutt, New Zealand.
  2021.08.29 - Concise - Added Model 1000 with Addiator. Moved some Concise files from Circular folder to Concise folder.
  2021.08.28 - Received Book The Slide Rule and Logaithmic Tables with Ten-place Table of Logarithms by Clark. 2021.08.27 - Dietzgen - Added[Replaced} 1768P with molded plastic Cursor [S137] gift of William Lisowski of PA. Added two variations of 1768P cursurs.
  
  2021.08.26 - Acu-Math - Added Fullerton-Acu 400 Mannheim and Acu-Math 500 Trig Metal Braces. Gifts of William Lisowski of PA
  2021.08.25 - Received dontation from David.L. Hilton, of Westchester, CA,, a patron Friend of the Museum.
  2021.08.25 - Assigning ISRM Accession numbers to the William Lisowski Collection
  2021.08.22 - Concise - Added ISRG Michael O'Leary Memorial and ISRG Herman van Herwijnen Memorial Concis Circulars.
  2021.08.22 - Dietzgen - Added 5in 1768 Mannheim 1922. This model number was llater reissued after WWII
  
  2021.08.22 - MiscUSA - Added Novotnis Machine Time Slide Rule Tooling Print block.
  
  2021.08.22 - MiscJapan - Added Generic OEM 5in Pocket wood stock.
  2021.08.21 - China - Added Flying Fish Models 1002 Vector V2, 1004 Vector V1, 1012 Advanced, 1017 Chem V1, 1018 Elect. Gifts of Sun, (Forster) Fang.
  2021.08.21 - Added digital kindle versions of Slide Rule Instructions Library Volumes 4, 5, 6, 8, 9, 10, 11, 12, and 13.
  2021.08.21.01 - Received Vickers Mk.I slide rule for Vickers 303 machine gun. Stainless steel. From Bill, Toole ofWodonga, VIC, Australia.
  2021.08.21 - Received ISRM Logo Clock from Cafe press.
  2021.08.21 - China - Added Xuesh 1671 wood and 6171 plastic. 5471 Vector V2, 5471 Vector V3, 5851 Vector. Tianjin 6504 Electronic V2 and 6506 LL. Ruyi Sida 1009, 1083 Vector. Gifts of Sun, (Forster) Fang.
  2021.08.21 - China - Added{replaced} HaiOu Pai 6531, Science Slide Rule Craft Co. 1572-K2, Gifts of Sun, (Forster) Fang.
  2021.08.20 - Published Chinese Hanzi Volume 22 in the series Slide Rule Instructions Library on Amazon.
  2021.08.20 - BrandIndex/China - Added Xuesh Stationery Craft Company, Shanghai, Science Slide Rule Craft Co. brands,
  2021.08.19.01 - Received IWA 0257 PIA-Electronic Pocket Slide Rule.
  2021.08.17 - Faber - Added Faber 67/39 dc562 (Feb 1956) 5 inch scale to gallery. Gift of Philip Stanley Collection.
  2021.08.17 - China - Added [Replaced] Flying Fish 1001 LogLog, 1002 Vector Log, 1005 Stadia [REF], 1016 Ventilation [REF]. Gifts of Sun, (Forster) Fang..
  2021.08.15 - China - Added JangShi catagory and two version's of Jiang's Hyperbolic slide rules. Gifts of Sun, (Forster) Fang. Removed Innovation category. Have duplicate of No. 801 to adopt.
  2021.08.14 - Received two artifacts from Phil's Pastimes.
  
  • 21.08.14.01/M432 - Japanese Generic slide rule made of wood.
  • 21.08.14.02 - Novatni Slide Rule - Lead and wood printing stamp (partial) for making the Novatni Machine Time Slide Rule. As best as I know, this rule was never manufactured.
  2021.08.13 - Created a line of wall clocks using circular slide rule images, available through cafepress.com/isrmclocks
  2021.08.12 - Received slide rules from estate sale of an Oughtred Society member in Wisconsin.
  
  • 21.08.12.01/M434 - Concise 600 ISRG Michael O'Leary Memorial
  • 21.08.12.02/M433 - Concise Stadia ISRG Herman van Herwijnen Memorial
  • 21.08.12.03 - Hemmi No. 1
  • 21.08.12.04 - Dietzgen B-1734 dcSS-5 (Bamboo version made by Ricoh) Replace S466
  • 21.08.12.05 - Dietzgen G-1734 dc671 (Geroplast version made by Faber-Castell) Replace REF
  • 21.08.12.06 - Dietzgen 1768 Mannheim Pocket 1920 (Model Number reused after WWII)
  • 21.08.12.07 - Omega 151 (Relay) To Gallery
  • 21.08.12.08 - Hemmi 1444K dcCG (July 1952) No Post Logo, Hemmi on bac of bottom stock
  • 21.08.12.09 - Post 1460 Versalog - Duplicate
  • 21.08.12.10 - Diwa 111 Electro dc71
  • 21.08.12.11 - Diwa 911 Log Log
  • 21.08.12.12 - Diwa 913 Log Log
  • 21.08.12.13 - Post Versalog II 1460 nosn no Versalog 'II' dcUL Dec 1970 GreenCos c1968 to gallery
  2021.08.11 - China - Added Ruyi Si Da 1001, 1002, 1002 dc663. 1009 dc 6610. Gifts of Sun (Forster) Fang of Guangzhou, China.
  2021.08.11 - SRM_Home - Added Instagram link and button.
  2021.08.10 - Registered for IM2021 at registration@im2021.org
  2021.08.08 - ISRM Slide Rule Instructions Preservation - compiling Chinese manuals for Volume 22, courtesy of Fang (Forster) Sun.
  2021.08.07 - Received gift of a slide rule collection (15 lbs) from William Lisowski of Easton, Pennsylvania
  
  • 21.08.07.01 - Radiac Exposure Calculator No.1 - to military gallery
  • 21.08.07.02 - USAF Rand R-138-PR Weapon Probability Computer. to military gallery
  • 21.08.07.03 - Lutz No.151P U.S. dcO.S-2 - to Adopt
  • 21.08.07.04/M - S.I.C. No.1520 sn30080 dc1961. To adopt. Manual to Japanese OEM II Library
  • 21.08.07.05 - Hemmi No.250 Basic Trig dcDE (May 1953) Version 2 DF scale labels to gallery
  • 21.08.07.06 - K&E 4090-3 sn Log Log Duoplex Trig sc470616 1936 - brown leather sleeve no flap - used cursor to restore a 4092-5
  • 21.08.07.07 - K&E 4081-3 Duplex decitrg sn 993215 No curso - to scrap
  • 21.08.07.08 - K&E 4070-3 Polyphase Duplex Trig sn285379 1945 K&E logo, serial number on side of stock. KERCS/replaced with cursor from sn459188 - Good case- to adopt
  • 21.08.07.09 - K&E 4070-3 Polyphase Duplex Trig sn407962 1945 K&E logo, serial number on side of stock.leather sleeve- to gallery
  • 21.08.07.10 - K&E 4097C 5inch sn133607 Variant Mod# on left - to gallery
  • 21.08.07.11 - K&E 4181-1 Pocket Log Log decitrig sn380955 Black Inverse Scale Labels, Green sleeve - to adopt
  • 21.08.07.12 - Diwa No.914 Log Log - To Gallery
  • 21.08.07.13 - Diwa 601-1 Pocket Narrow c22mm cursor. Fluidgenics National City promo - missing rear hairline to adopt.
  • 21.08.07.14 - K&E 68-1100 Decilon 10 sn056001 excellent sleeve with belt loop - adopt
  • 21.08.07.15 - Pickett N4-ES Triangle Logo, Narrow Flat lens Curved braces - Variation To gallery
  • 21.08.07.16 - Dietzgen 1734 MicroglideDecimal Trig Type Log Log sn057574 Duplicate to Adopt (ISRM 12.06.24.24 is also duplicate)
  • 21.08.07.17 - Lafayette_99-7127 Concise 270 add to Gallery Ricoh/Concise/Circular
  • 21.08.07.18 - SIC Concise 300B Circular Replace C37 - in SIC Gallery. Add to Concise also.
  • 21.08.07.19/M - Frederick Post Gilson Binary Midget - to adopt
  • 21.08.07.20/M - Lietz Gilson Binary Midget - to MiscUSA Gallery
  • 21.08.07.21 - Pickett N-515-T Electronic CIE Modern Logo Convex cursor rusty screws to adopt
  • 21.08.07.22 - Pickett N-531-ES CREI Round Blk logo c19060 - to adopt
  • 21.08.07.23 - Pickett 120 early black braces - to loaner
  • 21.08.07.24 - Pickett 121-T Microline Wide Stock
  • 21.08.07.25 - Pickett 120-ES Microline Wide Stock - to loaner
  • 21.08.07.26 - Pickett 140-ES Version 1, Microline Log Log Wide Stock Inverse scales marked with "<".- duplicate
  • 21.08.07.27 - Pickett 120-T Narrow stock - to loaner
  • 21.08.07.28 - Kel-Co Class Calculator 1971 Replace S337
  • 21.08.07.29 - Fullerton-Acu 400 ((acu-math) to acu-math gallery
  • 21.08.07.30 - Acu-Math 500 Mannheim Trig, metal braces. restored cursor spring.replace Tan leather sleeve. ISRM 11.11.17.05
  • 21.08.07.31 - Dietzgen 1768P Reliance 1940 wood version (missing Cursor) Place with S371 in gallery
  • 21.08.07.32 - C-Thru S-96 Circular Slide Rule 6in size on retail card to Gallery
  • 21.08.07.33 - Dietzgen 1767P National Molded Plastic Cursor Replace ISRM 14.09.21.07 image in Gallery
  • 21.08.07.34 - Sterling Precision 685 Red txt closed back - Same as 11.11.10.01 slide is too tight to use - replaced with one from a 684
  • 21.08.07.35 - Sterling/Borden era 684 black Txt slide to gallery
  • 21.08.07.36 - SIC 4030 Junior Mannheim 4in (Logo) 1961c sn 30151 ReplACE P247
  • 21.08.07.37 - SIC 5510 Master Log Log Decatrig (Logo) SN90043 Replace P245
  • 21.08.07.38 - Relay No.403 dc ZK-2 MIOJ (Made In Occupied Japan) to gallery
  • 21.08.07.39 - Pickett N600-ES LogLog Speed Rule Synchro Scale Triangle Logo - To adopt
  • 21.08.07.40 - Dietzgen 1771 Redirule 5 inch Pocket Blank back missing cursor spring (restord with watch spring). To Gallery
  • 21.08.07.41/M - UTO 601 5 inch scale All-plastic 1 inch wide cursor. Green box, Varian Palo Alto Tube Division Promo To Gallery
  • 21.08.07.42 - Dietzgen/Bruning now a Post 1444P pocket slide rule used cursor to restore a post slide rule - to adopt
  2021.08.07 - KE_Standard - Corrected Description of 4090-3 Log Log Duplex Trig . Removed the word VECTOR.
  2021.08.06.02/M431 - Received Post 1490 Control Engineering 4-cursor Slide Rule dcHE. Gift of Tom Darbie, Belonged to Father Arthur M. Darbie
  2021.08.06.01 - Received Geotec 341-3012 Versalog II from shopgoodwill. Duplicate To adopt
  2021.08.06 - Pickett - Added [Replaced] N-1010-T Trig Curved lens Radius braces modern logo. N-515-T Electronic [S184]. Model 4 [S544]. Gift of Bob Dehn Collection.
  2021.08.05.01 - Received gift of Vickers Machine Gun MK III 1940 slide rule from Phillip Rodley of Upperhutt, New Zealand..
  2021.08.05 - SR_Scales - Added May 2006 Scientific American template for making a paper slide rule.
  2021.08.05 - Scanning multiple Instruction Manuals for Volume 22 - Chinese
  2021.08.04.01 - Received Thornton A.G. 10 inch slide rule RR track scales Metal framed cursor. dc1939 from Faversham, Kent, UK.
  2021.08.04.02 - Received Post Versalog 1460 dcFF (June 1955) noSN. Gift of Aurthur OZ. Anderson. Used in H.S. and College. Duplicate to loaner.
  2021.07.28 - Concise - Added Concise Gusteveco Circular Slide Rule w/tables - Philippine Ships Draught Stowage Bob Dehn Collection
  2021.07.27 - British - Added Taylor/TYCO/Short&Mason catagory and two models of Hygrorules. Gifts of Bob Dehn and Philip Stanely collections.
  2021.07.27 - Pedigree Precision Compact Empire Pencil. Retail card.Add packaging image to gallery 2021.07.27 - MiscUSA - Added Pedigree Precision Compact Empire Pencil. Retail card. Bob Dehn collection.
  2021.07.27 - Circular - Added[Replaced] Gilson 8 inch Binary [ISRM 15.05.09.08] Bob Dehn collection.
  2021.07.27 - KE_Standard - Added[Replaced] N9081-3 Log Log Decitrig Doric [ISRM 15.05.09.08] Bob Dehn collection.
  2021.07.27 - SIC - Added[Replaced] No.120 circular 1962 [C36]. Bob dehn Collection.
  2021.07.26 - Switzerland - Added two Versions of Hiltpold Semi-Circular Slide rule 1941-47. One a gift from Michael Frey of New Hampshire. The other Rod Lovett collection.
  2021.07.26 - Received gift of 3 slide rules from Dan G. Miller of Covington, Georgia.They belonged to Dan's brother Stephen B. Miller while attending Georgia Tech as a mechanical engineering student from 1965-1969. He passed in 1981.
  
  • 21.07.24.01 - Pickett N3-ES Powerlog Exponential w/ sleeve. Duplicate.
  • 21.07.24.02 - Pickett N3-600 Log Log Speed Rule w/ sleeve. Duplicate
  • 21.07.24.03 - Pickett 120-ES Microline Plastic w/ sleeve. To School loaner sets.
  2021.07.25.01 - Received HP-38E (red LED) ESR Financial calculator. sn 2012S30537. Working.
  2021.07.25 - Rarities - Added c1885 Farrow & Jackson Proof Rule
  2021.07.25 - DemoSR - Added DIWA Rietz-Ideal demo SR. Bernhard Arp Sørensen collection.
  2021.07.25 - K&E_Specialty - Moved 4094 Merchant's Slide Rule from Standard to Specialty gallery.
  2021.07.25 - Sent gift of slide rule to Phillip Rodley in NZ as thanks for his generosity. Made Possible by Michael Frey of NH.
  2021.07.25 - SR_Home and SR_Library - updated Slide Rule Instrcutions Series thumbnails 6 wide matrix
  SR_Home and SR_Library - updated Slide Rule Instructions Series thumbnails 6 wide matrix
  2021.07.24 - Received gift of slide rules from Roger Sperry of Martinez, Georgia.
  
  • 21.07.24.01 - Hemmi 250 Basic Trig dcDE May 1953 (Duplicate).Belonged to Arlen.C.Abbott (1933-?) KB7KFI, 4738 Brookgreen Rd, Martinez, GA 30907 706-631-2581.
  • 21.07.24.02 - Acu-Math 130 Log Log Decimal Trig Magnesium.(one cursor block is broken). Belonged to A.C.Abbott. (Duplicate). Needs 3-D cursor block designed
  2021.07.23 - Published Russian Cyrillic Volume 21 in the series Slide Rule Instructions Library on Amazon.
  2021.07.21.01 - Received Jones Metabolism Slide Rule, Stainless Steel.
  2021.07.20.01 - Received Acu-Math No.40 Concrete Calculator, Master Builder Pozzolith promo
  2021.07.16 - Rarities - Added Farmar's Spirit Rule (1902) and link to 8th Edition Guide book
  Added link to Amazon for 15th edition in Volume 20.
  2021.07.15.01 - Received Concise Model 1000 , circular Slide Rule, Addiator, Sama &Etani Data Tables Insert CE (Missing stylus).
  2021.07.13 - Published Miscellany and Rare Volume 20 in the series Slide Rule Instructions Library on Amazon.
  2021.07.09.01 - Received 2 bargain slide rules off ebay ($14.70)
  
  • 21.07.09.01 - K&E 4053-3 w/Magnifyer and sleeve. sn178642. Has KERCS To Gallery
  • 21.07.09.02 - K&E 4080-3 Duplex log log trig marked "U.S.Navy 127" and sleeve. sn1704182 Alternate Scale set. Has KERCS To Gallery
  2021.07.08 - United Kingdom - Renamed Simplon section of gallery to Dargue Brothers, Ltd, makers of Simplon slide Rules.
  2021.07.08 - Brand Index - Added Dargue Brothers, Ltd, makers of Simplon slide Rules. and J. Routledge.(Joint Rules)
  2021.07.06 - Received gift of slide rules from Michael Frey of New Hampshire.
  
  • 21.07.06.01 - Hiltpold Semi-Circular slide rule. To Swiss gallery
  • 21.07.06.02 - K&E 68-1130 Decilon 5 pocket. Regift to Phillip Rodley in NZ.
  2021.07.04 - In memoriam - Well respected collector and Friend of the Museum Clay Castleberry. died today. (April 28, 1927 - July 4, 2021).
  2021.07.01.01 - Received gift of a Nestler Convoy and Troop movements spacing slide rule from Andreas Fassbender of Germany.
  2021.06.30 - Published Civil and Industrial Volume 19 in the series Slide Rule Instructions LibraryAmazon.
  2021.06.30 - SR_WhosWho - Added Marvin Clarence, ISRM's head of public enlightenment and youth advisor.
  2021.06.24 - Friends of the Museum - Received donation from Randall Rosenfeld of Canada., now a patron Friend of the Museum
  2021.06.24 - British - Corrected spelling of Clementson brand, Steam pipe sizing slide rule.
  2021.06.21 - Pickett - Added Model 550-T Warren-Knight WACKO 1573-C Weight Slide Rule. Courtesy of Greg Scott Collection.
  2021.06.21.01 - Received Toshiba BC-8112SR Electronic (slide rule) calculator, sn102617
  2021.06.21.01 - Relay/Ricoh - Added Ricoh No.551 6 inch vector multilog LogLog dcRS-7.(1969)
  2021.06.17 - Dietzgen - Replaced Redirule metal framed cursor. Belonged to Robert G. Goody 1915-2001 . Gifted by daughter Nancy H. Goody of Albany, New York.
  2021.06.17 - Sterling - Replaced Model 685 with green slide. Belonged to Robert G. Goody 1915-2001 . Gifted by daughter Nancy H. Goody of Albany, New York.
  2021.06.17 - Published Military and Aerospace Volume 18 in the series Slide Rule Instructions Library Amazon.
  2021.06.17.01 - Received Commodore SR-37 Electronic Slide Rule Calculator, sn 05713 made in UK.
  2021.06.17.02 - Received Quelle International Privileg (Commodore) SR30 Electronic Slide Rule Calculator, sn 18456..
  2021.06.17 - SR_Library - Updated thumbs of all 18 Volumes of Slide Rule Instructions
  2021.06.17 - SRM_Home - Updated thumbs of all 18 Volumes of Slide Rule Instructions
  2021.06.17 - SR_Library/Books Added Bagaimanakahkita bekerdja dengan mistar hitung dan dengan tjakera hitung (Slide Rule book in Indonesian language). Scan by Marvin Clarence of Jakarta.
  2021.06.14 - Published Francais Volume 17 (totaly in French language) in the series Slide Rule Instructions Library
  2021.06.13.01 - Received 8" duplex Relay No.651 Electro. Grey and clear plastic sleeve. To gallery.
  2021.06.11 - Purchased Commodore SR-37 Electronic Slide Rule Calculator from Athens, Greece. seller: aok4765. July delivery.
  2021.06.10 - Received gift of a slide rule collection belonging to Robert (Bob Dehn), gifted by wife Fran Dehn of Menlo Park, California.
  
  • Mxxx - Instruction Book Hemmi Bamboo Slide Rule (Duplex Type) 1957
  • Mxxx - The Slide Rule and Tecvhnical Problem Solving by Leach and Beakley 1963 Macmillan Company Publisher
  • Mxxx - Slide Rule by C.L. Johnson 4th edition 1967 Classroom Textbook 8-1/2 x 11 Spiralbound - Brown Co. Publishers
  • 21.06.10.01 - Gilson Binary 8" Personal SR og Bo Dehn, has name scratched in hub. Added to Circular gallery with photo.
  • 21.06.10.02 - Dietzgen 1735 Vector All-glas cursor sn107834 . Has Donald L. Ware engraved on stock.
  • 21.06.10.03 - K&E 4081-3 LL Decitrig (partial KERCS) sn249739. clean metal, scrap or refurbish
  • 21.06.10.04 - K&E N4053-5 20 inch Polyphase Mannhiem (1936-1942) sn633619. duplicate
  • 21.06.10.05 - K&E N4053-5 20 inch Polyphase Mannhiem sn722748 bad repair job. Cursor went to another 4053-3 magnifyer.scrap
  • 21.06.10.06 - K&E N4053-3 10 inch Polyphase Mannhiem sn473568 Becoming delaqminated. Good improved cursor. Roland on sleeve. Variant of model number and K&E logo placement. to gallery
  • 21.06.10.07 - K&E N4053-3 10 inch Polyphase Mannhiem sn888211 c1930 Good improved cursor. duplicate
  • 21.06.10.08 - K&E 4081-3 LL Decitrig 1939-1947 Scale set, no Logo.sn724845. pristine. Duplicate
  • 21.06.10.09 - K&E N9081-3 LL Decitrig Doric sn65395 Handmade leather sleeve marked Robert W. Kningston. replace ISRM 15.05.09.08 (Dick Rose). to gallery
  • 21.06.10.10/M - Hemmi 257 Chemical dcHI snSleeve Marked Ross Gordon, V. Tech.Duplicate
  • 21.06.10.11 -.Post 1460 Versalog sn223775 dcLH (aug 1961) Green CO. Owned by A.C Bonara 117 Gelenwood, Artherton, California . Duplicate
  • 21.06.10.12/M - SIC Scientific Intruments No. 120 circular Prof. SR. in box 1962 Replace To gallery replace C36
  • 21.06.10.13 - Concise Gusteveco Luzon StevedoringCo. of Guam. Draught/Stowage Slide Rule to Concise gallery
  • 21.06.10.14 - Diwa No.901 Duplex in mahagony Wood clamshell box. For adoption.
  • 21.06.10.15 - Pedigree Precision Compact Empire Pencil. Retail card.Add packaging image to gallery
  • 21.06.10.16 - Taylor No. 1326 Hygrorule Humidity Slide Rule - Made in England
  • 21.06.10.17 - Pickett 200-T Pocket trig in Retail box, NOS. With manual.Has Moon Flight Label. To adopt.
  • 21.06.10.18 - Pickett N1010-ES Power trig in Retail box, With manual.. To adopt.
  • 21.06.10.19 - Pickett N803-ES Log Log in Retail box, NOS. Brown Leather sleeve.Belt clip With manual. Early triangle logo. To adopt.
  • 21.06.10.20 - Pickett N803-ES Log Log in Black Leather Sleeve, Modern logo. To adopt.
  • 21.06.10.21 - Pickett N-500-ES Hi Log Log in Suede Leather Sleeve, Modern logo. 1962 To adopt.
  • 21.06.10.22 - Pickett N1010-T Trig no sleeve Modern logo . Replace Paul Michaelis slide rule.
  • 21.06.10.23 - Pickett N-515-T Electronic CIE Round Black Logo. Flat Lens. Curved braces. replace S184. to gallery.
  • 21.06.10.24 - Pickett N-920-ES Simplex Trig.Round black logo, Replaced with modern cursor. To Loaner
  • 21.06.10.25 - Pickett N-920-ES Simplex Trig.modern logo logo, Corroded. Scrap
  • 21.06.10.26 - Pickett Model 4 Vector Hyperbolic Lo-Log Early. sn3D18579 Faded scales.to gallery.
  • 21.06.10.27 - Pickett Model 1000 Ortho-Phase Duplex, magnesium. snA145818. CI in circle. Artwork 27. Corrosion has locked the slide, good cursor, clean scales..Felt sleeve. Restore for adoption
  • 21.06.10.28 - Pickett Model 1000 Ortho-Phase Duplex, magnesium. snA142136. CI in circle. Artwork 27. Corrosion has locked the slide, good cursor, crappy scales..Felt sleeve. Scrap
  • 21.06.10.29 - Pickett Model 901 Simplex, magnesium. snC001781 CI in circle. Artwork 27. Corrosion has locked the slide, good cursor, crappy scales..Felt sleeve. Scrap
  • 21.06.10.30 - Pickett N-531-ES Capitol Radio Elect Inst.(CREI) Round Blk Logo, Curved braces, Curved lens.Black leatherette sleeve. Duplicate.
  • 21.06.10.31 - Pickett 140-ES Log Log Microline wide stock in Blak sleeve.. To Loaners.
  • 21.06.10.32 - Pickett Model 120 early grey braces. To Loaners
  • 21.06.10.33 - Acu-Math 400B Mannheim to loaners
  • 21.06.10.34 - C-Thru #27, Thin Film constructions, Trig scales on slide, back blank. - To Gallery
  • 21.06.10.35 - K&E N4058W Beginner's Slide Rule. no K or CI scale. Metal framed cursor.painted white stock Black sleeve duplicate
  • 21.06.10.36 - K&E N4058W Beginner's Slide Rule. Rectangular molded plastic cursor..painted white stock Grey sleeve. Duplicate
  • 21.06.10.37 - K&E N4058W Beginner's Slide Rule. Rectangular molded plastic cursor .painted white stock Grey sleeve. Duplicate
  • 21.06.10.38 - K&E 4058 Beginner's Slide Rule. no K or CI scale. thin film plastic cursor .wood stock in original printed cardboard to gallery
  • 21.06.10.39 - K&E 4098A Pocket slide ruleMetal and plastic cursor.sn52073. Replace P113 to Gallery
  • 21.06.10.40 - Lawrence Engineering Service 250-BT [Slide #403], metal framed cursor.Missing trig hairline lens To gallery.
  • 21.06.10.41/M - UTO 601 Hoffman, Rietz Celco Promo. to gallery. replace p132
  • 21.06.10.42/M - Wizard Calculating Maching (Addiator) To Gallery
  2021.06.10 - Assigned Ascension numbers to Numerous Electronic Slide Rule Calculators that have drifted in since April 2021.
  2021.06.09 - Opened the ISRM Library for downloads, now that the majority of the files are in book form now.
  2021.06.08 - Published Air and Sea Navigation Volume 16 in the series Slide Rule Instructions Library
  2021.06.07/M430 - Received 1931 "The Langsner Industrial Slide Rule" Manual , Dietzgen Co.
  2021.06.07.- Received Jeppesen Flight Computers with manuals
  
  • 21.06.07.01/M428 - Jeppesen CSG-1A Slide Graphic Computer, Pilots Type MB4 1961
  • 21.06.07.01/M429 - Jeppesen CR-# Slide Graphic Computer
  2021.06.06.01 - Received gift of Concise 600_CE Chemical Tables and SR, from JanGautreaux, of Cochita Lake, NM. Belonged to father Charles Roy McMullen.With bio. Add to gallery.
  2021.06.04 - Published Electrical and Radio Volume 15 in the series Slide Rule Instructions Library
  2021.06.02/M427 - Received 1930 Nestler Rietz et Darmstadt (in French) manual from Valerie Desreumaux of Vallreas, France
  2021.06.01 - Published Pocket-Watch Volume 14 in the series Slide Rule Instructions Library
  2021.05.31 - Received donation from Brian McIndoe .now a patron and Friend of the Museum.
  2021.05.31 - Received gift of slide rules from Chris Williamson of Apollo Beach, Florida
  
  • 21.05.31.01 - Pickett N-500-ES Modern Logo, (early placement of logo) Suede Sleeve_retail box with manual to Gallery
  • 21.05.31.02 - Post Hemmi 1441 with magnifier dcRK Nov 1967 to Adopt
  2021.05.29 - Received gift of slide rules from Nancy Goody which belonged to her father Robert B. Goody 1915-2001
  
  • 21.05.29.01 - Sterling 685 Slide Rule Greentext slide (replace S153)
  • 21.05.29.02 - Dietzgen redirule (Bruning) (Replace P172)
  • 21.05.29.03 - UTO 601 Hoffman Denmark Barber-Coleman promo
  2021.05.28.01 - Received Frederick Post 1452-D Universal Mannheim (Roos/Acu-Rule circa 1941) from Keith Godber, Burn Selby, UK. red sleeve.[Replace 14.07.02.48]
  2021.05.28 - Marvin Clarence of Jakarta created a Samsung phone app that can be used to quickly access various ISRM social media acounts, the website and the social hour link. to down load and install: http://drive.google.com/file/d/1Np_D-HaxY4nqf6fUrSKHw89JuHq6KHF2/view?usp=sharing
  2021.05.27 - Received slide rules from Serbia.
  
  • 21.05.27.01 - Aristo Scholar 902 Black braces. dc 522.
  • 21.05.27.02 - Triso Darmstadt Art. 6561 pocket slide rule
  • 21.05.27.03 - Triso Darmstadt Art. 6504 pocket slide rule
  2021.05.26.01 - Received Charvos-Roos SR-31
  2021.05.26.02 - Received Joe Klawun No.1001 20" slide rule Made by Nestler
  2021.05.26.03 - Received Pickett 905-ES "A"
  2021.05.25.01/M - Received Hornet SR-30 Electronic Slide Rule .
  2021.05.24.01 - Received Graphoplex Koh-I-Nor 10010 Techno-Log
  2021.05.23.01 - Received Pickett 905-ES A Texas Speed Rule
  2021.05.22.01 - Received Aristo 109 50cm 20in
  2021,05.12.01 - Recieved Pickett 300 Magnesium gifted by Wayne H. Keene, PhD. of Boothbay Harbor, Maine. Broken lens. To gallery.
  2021.05.10 - Received donation from Wayne R. Pinnow, Wisconsin, a patron and Friend of the Museum.
  2021.05.10.01/M - Received Summit Electronic Slide Rule .
  2021.05.10.02 - Received Bowmar MX100 Electronic Slide Rule .
  2021.05.20 - Published British Volume 13 in the series Slide Rule Instructions Library
  2021.05.08 - Received Gift of DVD containing 300+ British instruction leaflets from Peter Hopp and Rod Lovett of UKSRC,
  2021.05.08.01 - Received Gift of K&E 4058W all glass cursor from Jonah Berman of New York, NY. Black cardboard sleeve.
  2021.05.07.01 - Received Novus 44510 Mathematician Electronic Slide Rule .
  Slide Rule Instructions Library
  2021.05.03.01/M 2021.05.01 - KE_Specialty - Added 4128 Nordell Sewer Slide Rule (Version 2) along with Bio and pictures of George W. Champe. Gift of Granddaughter Katherine Champe Jones.of Vienna, Virginia
  2021.04.28 - Published Deutsche Volume 11 (German Language) in the series Slide Rule Instructions Library
  2021.04.27/M - Received Aristo M85 Electronic Slide Rule
  2021.04.26.01 - Received Olson TL-355 pocket Ricoh No.403 dcLK-3
  2021.04.25 - Published Espanol Volume 10 (Spanish language) in the series Slide Rule Instructions Library
  2021.04.25 - Received Aristo 903 Scholar Instructions and Logarex 27204 Instructions in Spanish from Walter Shawlee of Sphere Research.
  2021.04.20.01/M435 - Received gift of Lietz 2971-P Rietz (Denmark) pocket slide rule from Wayne Farmer of Winona, MA. New Variation
  2021.04.18 - Published Nestler Volume 9 in the series Slide Rule Instructions Library
  2021.04.17.01/M - Received Brother 863 Electronic Slide Rule Calculator sn9422819 Retail box. .
  2021.04.17.02 - Received MIKE 3030 Electronic Slide Rule Calculator sn4133781 Retail box. .
  2021.04.16 - Shipped gift of Pickett 300 slide rule to Phillip Rodley in New Zealand (courtesy of Michael Frey) and repaired/returned to William Toran in New York his 70 year old K&E 4081-3 slide rule that he used in college.
  2021.04.15.01/M - Received TI-30 SLR Slide Rule Calculator, Solar
  2021.04.14 - FundRaser - Received donation from David L Hilton, of Westchester, CA a patron Friend of the Museum since 2016.
  Pickett 300 (magnesium) and K&E metal column cursor , gifts of Michael Frey. in New Hampshire.
  2021.04.09 - FundRaser - Received donation Maurizio Tanchi of Terni, Italy. Now a patron Friend of the Museum .
  2021.04.08 - Dietzgen - Added Dietzgen 1725 Vector Log sn095352 belonging to Harold J. Wise. Gifted by his wife Susan Wise. With bio and photo
  . 2021.04.07 - Received gift of Dietzgen 1725 Vector Log slide rule belonging to Harold J. Wise. Gifted by his wife Susan Wise.
  . 2021.04.07 - Received gift of slide rules belonging to George Washington Champe (1868-1937), a civil engineer, and others from Katherine Champe Jones of Vienna, Virginia.
  
  • 21.04.07.01/M426 - K&E 4128 Version 2 Nordell Sewer Rule. With Bio of Geo. W. Champe. To Gallery
  • 21.04.07.02 - Aristo Multitrig 909 dc 565 (1956) .
  • 21.04.07.03 - Dietzgen 1759-B with Magnifying Cursor. No Sleeve. To Gallery.
  • 21.04.07.04 - K&E 68-1210 LogLog Duplex decitrig sn561216 1962 Laminated edges Green Sleeve "Vicki Stevenson" on flap. .
  • 21.04.07.05 - Roos SR-111 Trig-O-Log. Metal braces. Faded red ink. Belonged to Robert E. Holey, 3123 Tremainsville Road, Toledo, Ohio..
  • 21.04.07.06 - Pickett Model N3-ES - Power Log Exponential Curved braces, curved lens, Round Black logo..Owner B.E.Mitchell 7750675 (military sn). To Gallery
  • 21.04.07.07 KE 4058-W Beginner's Student Slide Rule . No cursor
  2021.04.02. - Published Aristo Slide Rule Instructions - Volume 7 of the ISRM Slide Rule Instruction Reprints Series on Amazon.
  2021.03.29.01 - Received Hemmi 64 with "C Cursor. from Ted Hume in Texas.
  2021.03.28.01 - Received Lutz Ferrando y Cia, Buenos Aires (Albert Nestler Germany 23R OEM) Nestler Electro 37 cursor with side hairline.
  2021.03.27 - FundRaiser - Received donation from Michael M. Frey of Newmarket, New Hampshire, now a patron Friend of the Museum patron.
  2021.03.27 - MiscUSA/Henschel - Added model 1083 made by Aristo. Gift of Philip Stanley collection. Added background information on John Henschel Company, NY.
  2021.03.27 - Aristo - Added 814 Elektro, 815 Electro, 811, 1083, 10155 Soil Swell, 803, 89, 082, 82, 1925 Mannheim, 845, 829, 812, 80125, 890, and 0868. Gifts of Philip Stanley collection.
  2021.03.27 - Begin sorting manuals for Slide Rule Instructions
  2021.03.27 - Aristo - Added Dennert&Pape 11cm Pocket Mannheim, Gift of Philip Stanley collection.
  2021.03.27 - Nestler - Added two variants of Albert Nestler 41 (no model number) c1925. no sleeve. one with Ernie'd Cement promo.
  2021.03.27 - MiscUSA/Climatemaker - Added Climatemaker Slide Rule Service of Bloomington, Illinois. (Lawrence OEM 10-B)
  2021.03.27 - Lawrence/OEM - Added Climatemaker Slide Rule Service of Bloomington, Illinois. (Lawrence OEM 10-B), 8-L Wire Selector, 250-BT Slide #611. National Foreman's Productivity Rule 1946
  2021.03.27.01 - Hemmi - Received and added 64 System Rietz dcIG, gift of Ted Hume, Angelo, TX.
  2021.03.26 - Faber - Added models 369, 62/83 Biplex, 61/98/319 Elektro, 67/21 Concret, 389, 67/91, 67/54. Gift of Philip Stanley collection.
  2021.03.26.01 - Received rare Concise 26A Circular Slide Rule and Conversion Tables. Japanese and English labels. Includes manual. Predessesor to all OEM products.
  2021.03.26 - Post - Added model 1459 (Same as Hemmi 153) for Electrical Engineer and c1951 1460 Versalog 1st generation black COS belonged to Paul_J_Olshefski, IBM Engineer. Gifted by son David Olshefski
  2021.03.26 - Hemmi - Added model 266 Electronics dcQE May 1968.
  2021.03.26 - Nordic - Added [Replaced] UTO 601 GE Power Tubes Promo [P018]
  2021.03.26 - Acumath - Added Model 130 Magnesium stock gift of Col. Robert E. Loach of Burke, Virginia, and Version 3 molded model 130 gift of Jerome Drews of Kent, Washington.
  2021.03.26 - Pickett added Retail Box of early molded Model 120 gifted by Robert Loach to ISRM 15.03.28.01 entry of Larry Hoades.
  2021.03.25 - Cropped and combined images of 28 previously scanned slide rules.
  2021.03.24 - China - Added brands Tianjin, Renovation, Wenzhou
  2021.03.23 - Faber - Added 67/98 Elektro, 67/98b Elektro, 66/91, 63/39. 167/87, 63/91. 63/91/3385, 67/39, 73/39, 63/87. Gift of Philip Stanley collection.
  2021.03.23 - Germany - Added Castell Klawun No.81. Gift of Philip Stanley collection.
  2021.03.23 - Americas/Brazil - Added catagory Lutz Ferrando y Cia, S.A. and rebranded Hemmi 64.with Nestler back equivalents.
  2021.03.23 - Hemmi - Added model 264 Log Log Trig dc1968
  2021.03.23.01 - Received Nestler No. 8 System Rietz
  2021.03.23 - Faber - Added 379 pocket Elektro. Gift of Philip Stanley collection.
  2021.03.23 - China - Added Dali Steel Works, Nan Hui 6501, Gifts of Fang (Forster) Sun of China.
  2021.03.23 - SRM_Menu and SRM_Home - Changed Orient catagory to China.htm with China/EastAsia as the title of the page.
  2021.03.22 - Scanned the 46 Faber and Aristo slide rules from the Philip Stanley Collection, Next comes editing.
  2021.03.22.01 - Received Hemmi 264 dcSI Sep 1968 from Ted Hume in Texas.
  2021.03.21 - Received gift of vintage Chinese slide from Fang (forster) Sun.
  2021.03.21 - Scanned recent arrivals of slide rules as well as portions of Philip Stanley collection.
  2021.03.20.01 - Received Micronta No.150 (Radio Shack) dc 1.K-4. Replace REF in Gallery
  2021.03.19.01 - Received Nestler No. 0239 dc 562 (may 1962) Rietz from British Columbia, Canada.
  2021.03.19.01 - Received Nestler No. 2010 from New Hampshire.
  2021.03.18 - FundRaiser - Received donation from Ron Schauble, now a Friend of the Museum patron.
  2021.03.17 - FundRaiser - Received donation from Don Freesland, now a Friend of the Museum patron.
  2021.03.15 - FundRaiser - Received donation from Dale Rupert, of Harrisburg, PA, now a Friend of the Museum patron.
  2021.03.15 - SR_Rescue - Sent slide rules to California and Indonesia
  2021.03.15 - SR_Library - Added links to Amazon for 5 Volumes of the the ISRM Slide Rule Instructions Library. 550 pages, paperback or Hardcover.
  2021.03.15 - Fundraiser - Received donation from Walter Reshetylo from Canada. He is now a Friend of the Museum.
  2021.03.13 - Notified of gifts of slide rules from Fang (Forster) Sun of China. Added to Friends of the Museum.
  
  • 21.03.13.01 - Ruyi 1001 (Shanghai Sida Rule) pre 1965. P.S.A.P.DkGrn Sleeve, to China Gallery
  • 21.03.13.02 - Ruyi 1002 (Shanghai Sida Rule) pre 1965 P.S.A.P. DkGrn Sleeve, to China Gallery
  • 21.03.13.03 - Ruyi 1002 (Shanghai Sida Rule) dc663 1966 P.P.P.P Brown sleeve, to China Gallery
  • 21.03.13.04 - Ruyi 1002 (Shanghai Sida Rule) dc665 1966 P.P.P.P to adopt
  • 21.03.13.05 - Ruyi 1009 (Shanghai Sida Rule) dc65.11 1965 P.S.P.P to China Gallery
  • 21.03.13.07 - Ruyi 1083 (Shanghai Sida Rule) dc575 1957 B.S.SP.G to China Gallery
  • 21.03.13.06 - Ruyi 1009 (Shanghai Sida Rule) dc66.10 1966 P.P.P.P.lt blue sleeve, to China Gallery
  • 21.03.13.07 - Ruyi 1083 (Shanghai Sida Rule) dc575 1957 B.S.SP.G to China Gallery
  • 21.03.13.08 - Ruyi 1398 (Shanghai Sida Rule) dc564 1956 W.na.S.G
  • 21.03.13.09 - Ruyi 6202 (Shanghai Sida Rule) W.S.SP.G. To Adopt
  • 21.03.13.10 - Ruyi 6202 (Shanghai Sida Rule) B.S.SP.G to China Gallery
  • 21.03.13.11 - Flying Fish 1001 P.P.P.P Log Lof V1 .Shanghai Slide Rule Factory, Shanghai
  • 21.03.13.12 - Flying Fish 1002 P.P.P.P Log Log hyperbolic V1 Red Text on Cursor,Model number on slide. to Gallery
  • 21.03.13.13 - Flying Fish 1002 P.P.P.P Log Log hyperbolic V2 to Gallery (Replace S554)
  • 21.03.13.14 - Flying Fish 1003 P.P.P.P Log Log hyperbolic, date code Designed in 1974-07. redish Sleeve Duplicate to adopt
  • 21.03.13.15 - Flying Fish 1004 P.P.P.P
  • 21.03.13.16 - Flying Fish 1005 P.P.P.P Surveying and Mapping to Gallery (Replace REF)
  • 21.03.13.17 - Flying Fish 1012 P.P.P.P Advanced Log Log Hyperbolic to Gallery
  • 21.03.13.18 - Flying Fish 1015 P.P.P.P Log Log Hyperbolic Student Slide Rule. Duplicate To adopt
  • 21.03.13.19 - Flying Fish 1016 P.P.P.P Ventilation Pipe Slide Rule To Gallery
  • 21.03.13.20 - Flying Fish 1017 P.P.P.P Chemical Engineering Slide Rule
  • 21.03.13.21 - Flying Fish 1018 P.P.P.P Electrical Engineering Slide Rule Version 2 to gallery
  • 21.03.13.22 - Flying Fish 1205 pocket P.P.P.P
  • 21.03.13.23 - Flying Fish Type five-seven (May 7, 1966 Cultural Revolution) pocket P.P.P.P For Students replace 09.01.12.114
  • 21.03.13.24 - Dingfeng 5471Shanghai Dingfeng Instrument factory, Shanghai.Version 2. After 1950's B.S.P.P to China Gallery Replace S524
  • 21.03.13.25 - Dingfeng 5471 Gong Si He Ying Dingfeng Instrument factory, Shanghai 1950's B.S.SP.G (Gong Si He Ying period) Replace S549
  • 21.03.13.26 - Dingfeng 5851. Shanghai Dingfeng Instrument factory, Shanghai P.A.P.P After 1950's to Gallery
  • 21.03.13.27 - Haiou (Sea Gull) 6531. P.A.B.P Designed in 1965. Beijing Slide Rule Factory, Beijing to Gallery Replace REF
  • 21.03.13.28 - Haiou (Sea Gull) 6631 Pocket. P.P.B.P Designed in 1966. Beijing Slide Rule Factory, Beijing
  • 21.03.13.29 - Xuesh 6171. B.S.A.P Shanghai Xuesh Stationery Craft Company, Shanghai to Gallery
  • 21.03.13.30 - Xuesh 6171. LB.S.A.P Shanghai Xuesh Stationery Craft Company, Shanghai Faded Labels. to adopt
  • 21.03.13.31 - Xuesh 6171. P.P.A.P Shanghai Xuesh Stationery Craft Company, Shanghai to Gallery
  • 21.03.13.32 - Gong Nong Bing 6504. P.P.Br.P Radio and Electrical Engineer Slide Rule
  • 21.03.13.33 - Gong Nong Bing 6506 P.P.P.P
  • 21.03.13.34 - Gong Si He Ying Hangzhou Staionary Factory Jiangs's (JiangShi) Type-B W.na.A.G 1960 Designed by Deyao Jiang
  • 21.03.13.35 - Tianjian 501 LW.na.P.P no slider stop
  • 21.03.13.36 - Dali Steel Works Circular. Shenyang Dali Medal Factory, Shenyang . to China Gallery
  • 21.03.13.37 - Science Slide Ruler Craft Company, 1572-K2 LB.S.SP.G., Beijing 1955-9-30
  • 21.03.13.38 - Shanghai Yigong Slide Rule Craft Company - Jian She (Construction) Trademark 53-01 LW.na.P.P. Assumed to be designed by Deyao Jiang
  • 21.03.13.39 - Renovation 801 LW.n.a.P.P Renovation Slide Rule Factory, Shanghai
  • 21.03.13.40 - Nanhui 6501 LB.S.P.P. Shanghai Local State-owned Nanhui Slide Rule Factory, Shanghai
  • 21.03.13.41 - Wenzhou 6601 W.na.P.P. Wenzhou Stationary Factory, Wenzhou.
  2021.03.05 - Received four homemade circular slide rules made by Dr. Oliver Steffens of Regensburg, Bavaria, Germany. Purchased and gifted by Mark Prange of Holland, Ohio.
  2021.03.05 - Recieved slide rules from Fabio Ramirez of Scotts Valley, California.
  
  • 21.03.05.01 - Richo 151 Multilog dc M.S-4 (1964)
  • 21.03.05.02 - Hemmi 250 dcOG (July 1964)
  2021.03.03 - Library - Restored access to downloads. The curator did not want the site to get a reputation for broken links. We still need to continue the fundraising. .
  2021.03.03 - SRM_Home - Removed Google Ad Asense from Page. It just does not fit the intended mission of the curator.
  2021.03.02 - FundRaiser - Received donation from Marc-Yvon Comeau of Montreal, Canada.
  2021.03.02 - Dietzgen - Added Eugene Dietzgen Company history and chronology to gallery page.
  2021.02.27.01 - Received Hemmi 154 50cm Electrical Engineer's Duplex. Two cursors. c1932. Scales on glass. Belonged to Emory Leon Chaffee (1885-1975) a scientist who worked at the Harvard University Cruft Laboratory. He wrote many papers published in the Institute of Radio Engineers from 1916-1942. Invented the Chaffee quenched spark gap radio transmitter. MIT, PhD from Harvard. Verbal Interview at >verbal interview - 1964. Taught the first course on vacuum tubes.
  2021.02.26 - Fundraiser - Received donation from Lymen Lew, a Patron Friend of the Museum.
  2021.02.25.01 - Received W.H. Smith & Son Log Log Trig gifted by John Hawkins of Dunfermune, England.
  2021.02.24 - Fundraiser - Received donation from Forster Sun, of China. He is now a Patron Friend of the Museum.
  2021.02.23 - MiscUSA/Weber - Added[Replaced] Weber 4237 (Germany), 4286, 4286P, 4287. Gifts of Philip Stanley.
  2021.02.23 - MiscUSA/Charvos/Roos - Added[Replaced] PSR-101, SR-108 Duplex Plastic Braces [P101], PSR-103A (Bruning). Gifts of Philip Stanley.
  2021.02.23 - Post - Added Post 1443 (Hemmi) Early 1936 Post logo. Gifts of Philip Stanely.
  2021.02.23 - Misc_USA/Guedon - Added Guedon "The Miniture", Guedon Metal pocker SR. Lietz 271-P V3, Lietz 2972. Gifts of Philip Stanley.
  2021.02.22.01 - Received Hemmi 266 Electronic slide rule. dcQE (may 1966). TAMAYA sleeve.
  2021.02.21.01 - Received Lafayette F-428 LogLogDeci-Trig slide rule. dc I.S-4 (1960). Wm.Brennan on flap.
  2021.02.21 - SR_WhosWho - Added Greg Scott, from Brisbane, Quensland, Australia. Website: sliderule.ozmanor.com
  2021.02.20 - Scanned over 800 pages on instructions manuals.
  2021.02.20.01 - Received Post 1459 Electrical Engineer (similar to early 1934 Hemmi 153),c1938
  2021.02.19.01 - Received Pickett No.501 Business and Finance slides rule Magnesium stock. With retain box no sleeve.
  2021.02.18.01 - Received Pickett No.140-T Microline LogLog with red inverse scales. OMG. I thought we had every version! Black sleeve.
  2021.02.17 - Received donations from Mark Miller, Carliss Such, and Bianchi Giuseppe.
  2021.02.16 - Library Rescanned numerous Hemmi manuals to remove black marks and faded pages. sharpened text.
  2021.02.16 - Received slides rules acquired from Paul Laughlin of Jenkintown, PA.
  
  • 21.02.16.01 - Farrow & Jackson Gauging basswood and brass 12.5" long, slide rule with dual slides after 1824, late 1800's
    
  • 21.02.16.02 - Albert Nestler Nr. 11 ZR pocket Rietz black sleeve
  • 21.02.16.03 - Nestler 4-1/2" pocket Mannheim slide rule
  2021.02.15.01 - Received Charvoz-Roos PSR-200 with magnifier (Hemmi Made in Occupied Japan) 2021.02.14.01 - Received Novus 3500 Sliderule sn023217 National Semiconductor red LED display electronic calculator. Uses 9V battery Brown case.
  2021.02.13.01 - Received "Heaven" brand pocket slide rule which has a unique full length mangnifier over the stock.
  2021.02.12.01 - Received Canon F-7 Palmtronic 'slide rule' calculator. Red LED display, with Manual.in black case. Usrs 4 AA batteries.
  2021.02.11.01 - Received Post 1447DP Overhead Projector slide rule. in box with overlays.
  2021.02.10.01 - Received Climatemaker Slide rule 10-B, Bloomington, Illinois (made by Lawrence)
  2021.02.10.02 - Received Nestler No. 4 Slide rule Black cardboard sleeve.
  2021.02.10 - On-line virtual coffee event every Wednesdays Alternating between 9AM and 9PM. Today at 9AM MST goto link: meet.google.com/cms-vtny-yvg
  2021.02.09.01 - Received Farmar's (proof and stocktaking) Rule 14-1/2 inch long, with cursor.
  2021.02.08.01 - Received Canon F-& Palmtronic 'slide rule' calculator. Red LED display, with Manual.in black case.
  2021.02.07.01 - Received Bowmar Centrury Mark IV 4-function calculator. Red LED display Early maker.
  2021.02.07 - Pickett - Added Model 121 Trainer w/ black braces gift of Prof. Robert Carlisle of Nederland, Colorado.
  2021.02.05.01 - National Foreman's Institute Productivity rule 2021.02.06 - Hemmi - Added Hemmi 255 for Expert Electrical Engineer dcID Apr1958
  2021.02.06 - MiscUSA/Weber - Added 4280 Mannheim, 4281-5, 4285N, 4288
  2021.02.06 - Library/USA - Added Weber 4280 Mannheim instructions.
  2021.02.06 - Post - Added[replaced] 1458 Duplex (Sun Hemmi 150) c1931 [S017]. 1443 Pocket gift of Philip Stanley.
  2021.02.05 - Charvoz-Roos - Added SR-??? (unknown model number, 1954 version with plastic braces. Gift Of Jeffrey J. Kornn.
  2021.02.05 - Nestler - Added 29/52 Log Log Duplex - 1954 gifted by Wayne H. Keene, PhD. of Boothbay Harbor, Maine. Sent by son-in-law Tim Donahue.
  2021.02.05 - Nestler - Added 23R/3 Rietz c1930. Black CI scale.
  2021.02.04 - LIBRARY - Blocked all access temporarily
  2021.02.04 - Circular - Added Mascot 69mm dia slide rule. Gift of Mr. Murphy of East Wanatchee, Washington
  2021.02.04 - Dietzgen - Added 1742 20 inch Phillips with Magnifying Cursor
  2021.02.04 - PocketWatch - Added Fowlers's Long Scale Magnum V2 4-5/8inch diameter. Gift of Phillip Rodley, Upperhutt, NZ
  2021.02.04 - Library/British - Added Fowlers's Long Scale Magnum Instructions. Gift of Phillip Rodley, Upperhutt, NZ
  2021.02.04 - Library/MiscEuro - Added Diwa 701 Businessman. Gift of Judith Harris, Bording. Denmark
  2021.02.04 - Nordic - Added Diwa No.901 Log Log Duplex Decitrig. Gift Of Phillip Rodley, Upperhutt, NZ
  2021.02.04 - Pickett - Added N4-ES Executive (gold anodized braces and screws) c1958. Scan by Marc-Yvon_Comeau Collection, Canada.
  2021.02.04 - SR_Rescue - Sent adopted slide rules to Erik B., Richard N. and Marvin C.
  2021.02.03 - PocketWatch - Added Scientific Publishing 80mm dia (Large version) "The Mechanical Engineer"
  2021.02.03 - Nordic - Added Diwa 741 Businessman from Judith Harris, of Bording, Denmark.
  2021.02.03 - On-line virtual coffee event every Wednesdays Alternating between 9AM and 9PM. Today at 9PM MST goto link: meet.google.com/cms-vtny-yvg
  2021.02.02.01/M424 - Received Hemmi 255 for Expert Electrical Engineer dcID Apr1958 with manual
  2021.02.02 - KE - Added scan of 4083 16 inch Duplex c1915 by Mike Syphers Collection, Illinois.
  2021.02.02 - Nordic - Added Diwa 501 Rietz belonged to Albert Kartahadja who founded Parahyangan Catholic University, scan by grandson Marvin Clarence.
  2021.02.02 - Library/Books - Added Amazon links to slide rule books available in paperback or hardbound. Proceeds benifit ISRM.
  2021.01.30.01 - Received gift of slide rules and a calculator from Jeffery J. Korn of Marietta. They belonged to his father who worked for AT&T (1946-1985).
  • 21.01.30.01 - Charvoz-Roos SR-113 Supertrig c1945 with plastic braces. Brown leatherette sleeve. Red box. to gallery
  • 21.01.30.02 - K&E 4088-3 Polyphase Duplex w/ frameless cursor Lot 58, in cardboard sleeve (duplicate)
  • 21.01.30.03 - Bomar Century Mark IV sn105308 works with 9V battery to Gallery
  2021.01.28 - Australia - Added history of White & Gillespie Manufacturers by R. Bruce Sandie. Added Micador No. 7 Darren Samphier Collection.
  2021.01.28 - SR_WhosWho - Added Robert Bruce Sandie, Nathan Zeldes, Mike Syphers, Marc-yvon Comeau, Darren Samphier, Philbert_Maurice_d'Ocagne.
  2021.01.28 - On-line virtual coffee event 9AM MST. Alternate Wednesdays at 9PM MST All are welcome. goto link: meet.google.com/cms-vtny-yvg
  2021.01.20 - On-line virtual coffee event Alternate Wednesdays at 9PM MST goto link: meet.google.com/cms-vtny-yvg
  2021.01.19.01 - Received F.Weber 4288 Pickworth
  2021.01.18.01 - Received Frederick Post 1458 (hemmi)
  2021.01.12 - On-line virtual coffee event Wednesdays at 9AM MST goto link: meet.google.com/cms-vtny-yvg
  2021.01.10.01 - Received gift of Nestler 29/52 Log/Log slide rule originally owned by Wayne H. Keene, PhD. of Boothbay Harbor, Maine. Sent by son-in-law Tim Donahue.
  2020.12.30 - MiscUSA - Added Weber 4285-A, installed a Sterling cursor.4286-D Ebay photo.
  2020.12.30 - Rarities - Added Dring And Fage c1862 Timber Rule, single sided, IM2020
  2020.12.30 - Created an on-line virtual coffee event Wednesdays at 9AM MST goto link: meet.google.com/cms-vtny-yvg
  2020.12.28 - As an expiriment, ISRM is trying out Google ad sense to help generate funds to support ISRM.
  2020.12.24 - SR_WhosWho - Added Peter Mark Roget. 1779-1869. Designed slide rule and Thesauras
  2020.12.24 - Moved Baldwin Locamotive book from Rarities to Germany under Wichmann.
  2020.12.24 - Updated IWA 1638 System Wern ABC, Gift of Wern Brothers.
  2020.12.23 - Continued scanning of the Philip Stanley pocket slide rule collection.
  2020.12.23 - Richardson - Added Geo. Richardson Rule Works 1776, missing cursor
  2020.12.23 - Aerospace - Added Jeppesen Computer R-1 and R-2. Gift of James Weber Estate
  2020.12.22 - General housekeeping and Tagging of errant sliderules and placement into proper archives boxes.
  2020.12.21 - Major cleanup of ISRM office and reorganization, and relocation of the archives.
  2020.12.20 - SR_Library/Pickett - Added Pickett CIE N-515instruction brouchure. Gift of Andrew Keller.
  2020.12.19 - MiscJapan - Added Sankyo Generic Pocket SR with 6 sclaes
  2020.12.05 - Adoption - Sent two slide rules to Erik Bogen of Rocky, River, OH.
  2020.12.04.01/M421 - Received Faber-Castell 1/60 Mannheim dc11-50 with 1/54 Darmstadt Manual from Neil Halsey of the U.K. Belonged to his father, Peter John Halsey.
  2020.111.31.01 - Received Slide Rule Tie clasp. Pickett displayed. Duplicate.
  2020.11.17-19 - Scanning pocket slide rules from Philip Stanley collection.
  2020.11.17 - Scanning slide rules from Bob Otnes, and Robert Carlisle collections.
  2020.11.13.01/M420 - Received Fowler Magnum Long Scale Calculator vest pocket watch slide rule. Variation 2, from Phillip Rodley of Upperhutt, New Zealand.
  2020.11.01.01 - Received Acumath 400 from David Lutz of Goshen, MA (for Loaner Program).
  2020.10.21.01/M418 - Received Diwa 741 Businessman from Judith Harris, of Bording, Denmark.
  2020.10.19 - Friends - Received gift from Brian McIndoe, now a Friend of the Museum.
  2020.10.19 - Ricoh - Added Engineer's 1510. from Ebay listings. suggested by L.Lew
  2020.10.03 - Continued scanning the Philip Stanley Collection of Pocket Slide Rules.
  2020.10.02 - Compressed 10 server folders (galleries) of slide rule images 80% to decrease loading times.
  2020.09.30 - Compressed Pickett and K"E slide rule images 80% to decrease loading times.
  2020.09.30 - Changes SRM.css file to increase font size to 14px (from 12px). Compressed Ephemera images 80% to decrease loading times.
  2020.09.19 - Recieved generous donation from Paul M. McConnell of Worthington, Ohio. Now a Friend of the Museum. His donation covered the second quarter operations.
  2020.09.18 - Received new acquisitions courtesy of the Oughtred Society IM2020 auctions.
  
  • 20.90.18.01 - Dietzgen Phillips 1742P 20inch slide rule w/ magnifying cursor.
  • 20.09.18.02 - Dring And Fage c1862 Timber Rule single sided
  • 20.09.18.03 - Mechanical Engineer Chronograph, Large
  • 20.09.18.04 - KE 4053-5 All glass cursor to duplicate
  2020.09.12-13 - IM2020 - Attended the virtual International Meet of Slide rule collectors using Zoom. There were 115 attendees from around the world.
  2020.09.12 - Ephemera - Added 22 _catalog pages from Radio shack 1949-71.
  2020.09.11.01 - Received Lawrence Voltage Drop Slide Rule 8-L. Gift of Joseph L. Krause of Littleton, CO. Replace S323.
  2020.09.09 - Ricoh/SR_Terms/Brand Index - Added notes on Radio Shack's Micronta slide rule brand. Contributed by Lyman Lew.
  2020.09.09.01/M419 - Received The Mascot Slide Rule, Copyright 1934, 2.8inch diameter, gift of Murphy of East Wanatchee, WA.
  2020.08.31.01/M417 - Received gift of ABC System Wern IWA 1638 and manuals from Carl R. Wern, George H. Wern and Lars A. Wern in Sweden.
  2020.08.31 - SR _Rescue - Sent adopted slide rule to Jihn Savard in Edmonton, Canada.
  2020.08.25 - Dietzgen - Adde two model 1732, one with early all-glass cursor, the other with a K&E cursor. Gifts of Valerie peterson and Robert Carlisle.
  2020.08.25 - Pickett - Added Pickett Model 3 Deci-Multiphase LogLog Version4. Gift Of Scott Kakral of Loveland.
  2020.08.25 - Ephemera and Ricoh - added Jason 1967 catalog page showing slide rule ad. Scan by Jorge Lemaitre.
  2020.08.24 - Library/Europe - Added Nestler No.37 Elektro Manual. Scan by Andreas Faßbender. Faber 52/81 Novo-Mentor scan from reglasdecalculo.com.
  2020.08.24 - Pickett - Added N803-es 1959, ED-26 Project rule, 120-ES V1, 901-T printed on -ES stock.Gifts of Robert Carlisle.
  2020.08.24.01 - Received Gerber Scientific Instrument Co. Model TP007100B Variable Scale. Gift of Kenneth Ross (Retired Mathematician). Belonged to Peter Stanek and Jean Bee Chan, purchased c1960. Replaced Gallery specimen.
  2020.08.18.01 - Received Pickett Model 3 Deci Multiphase Black dot Inverse Scales. Version 4. Gift of Scott Kukral of Loveland, Colorado. Replace S226
  2020.08.17.01 - Received Weber 4285-A No cursor. Installed a Sterling 587 Cursor
  2020.08.16 - Received Weber Nr. 4285N, originally from the Bob Otnes Collection.
  2020.08.15 - Recieived gift from Raymon Faller, now a Friend of the Museum.
  2020.08.15 - Received gift of slide rules belonging to the Prof. Robert Carlisle of Nederland, Colorado.
  
  • 20.08.15.01 - Pickett ED-26 Projection Optics Co., Overhead Projector Slide Rule. To Gallery.
  • 20.08.15.02 - Sama & Etani (Concise) 600P Overhead Projector Model Clear scales. To gallery.
  • 20.08.15.03 - Pickett N4-ES Log Log Vector Hyperbolic. Square Braces Round Blk logo Missing Cursor. Adopt
  • 20.08.15.04 - Pickett 803-T- Log Log Speed Rule Dual Base 1959 All blk text. To gallery
  • 20.08.15.05 - Acu-Math A-900 Log Log Machined plastic. Note: the 900 was used later for the trig. To Gallery
  • 20.08.15.06 - Dietzgen 1732 Maniphase Multiplex No s/n Early cursor. Replace S295 To gallery.
  • 20.08.15.07 - Faber castell 1/87 Rietz dc258 Plastic back. to gallery.
  • 20.08.15.08 - C-Thru No.88 (Sheet Plastic Slide Rule) in clear sleeve. Replace S374. To Gallery
  • 20.08.15.09 - Unknown Generic Japan Pocket LogLog. Tan sleeve. To Japan Gallery.
  • 20.08.15.10 - Pickett Model No. 300 Round Braces Triangle Logo. Adopt.
  • 20.08.15.11 - Lawrence 250-BT .Palastic cursor needs cursor spring. To adopt
  • 20.08.15.12 - Pickett 901-T Simplex.in -ES color.- To adopt
  • 20.08.15.13 - Pickett 901-T Simplex.in -ES color.- To galleryTo adopt
  • 20.08.15.14 - C-Thru No.88 (Sheet Plastic Slide Rule) in clear sleeve. To Adopt
  • 20.08.15.15 - Sterling 585 Green stock, white slide in Sleeve with Label. Replace S232. To Gallery
  • 20.08.15.16 - Chadwick Adding Machine. To added gallery
  • 20.08.15.17 - Pickett 121 Trainer Black braces. to gallery
  • 20.08.15.18 - Pickett 121-T Microline Wide Stock Conversions on back.Black sleeve. To adopt
  • 20.08.15.19 - Pickett 120-T Microline Wide stock Missing cursor springs. To adopt
  • 20.08.15.20 - Sterling 689 Green stock, white slide. To loaners.
  • 20.08.15.21 - Pickett 120-ES Microline Wide stock. V2 Italic Inverse Scales.Black sleeve. To adopt
  • 20.08.15.22 - Pickett 120-ES Microline Wide stock. V2 Italic Inverse Scales. Black sleeve. To adopt
  • 20.08.15.23 - Pickett 120-T Microline Wide stock Black sleeve. broken stock To adopt
  • 20.08.15.24 - C-Thru No.27 Pocket with instructions (Sheet Plastic Slide Rule) in clear sleeve. To Adopt.
  • 20.08.15.25 - The Medical Slyd-Rul 1946 Apothecary to Metric conversions
  • 20.08.15.26 - Pickett 901-T Simplex.in -ES color.- To adopt
  • 20.08.15.27 - Sterling 565 Dial-a-matic 4-rotor adding machine . To adopt
  • 20.08.15.28 - Pickett 901-T Simplex.in -ES color.- To adopt
  • 20.08.15.29 - Lightning Calculator c1946 7-digit-rotor adding machine Los Angeles, CA. To gallery.
  • 20.08.15.30 - Lawrence 250-BT. 611 on slide. To adopt.
  • 20.08.15.31 - C-Thru P-79 Proportional Scale. To gallery
  • 20.08.15.na - 8 pcs Sterling 694 Deci TRig Log Log in Retail Package from Univ. of CO. to adopt
  • 20.08.15.NA - 2 pcs Sterling 694 Deci Trig Log Log to Loaners
  • 20.08.15.NA - 3ea Acumath 400 - Slide Rule Loaners
  • 20.08.15.NA - 6ea Sterling 589/689 White slide, white stock. To loaners.
  2020.08.14 - People_wSR - Edited Photos of Wern Brother's, based on Carl Wern suggestions.
  2020.08.14 - SR_WhosWho - Edited Wern Brother's entry, based on Carl Wern suggestions.
  2020.08.14 - Pickett - Corrected scale set shown for N800-ES (4 specimens). Error found by James Marshall. Thank you!
  2020.08.13.01 - Received Dietzgen 1732 Maniphase Multiplex slide rule (KE Cursor) from Valerie Christiansen. Belonged to her father H.M. Tommy Thompson. Bio included. To galleryReplace S295.
  2020.08.10 - SR_Rescue - Added new duplicates to Europe, MiscUSA, Japan and K&E lists.
  2020.08.09 - Netherlands - Added Kent pocket slide rule. Gift of Philip Stanley Collection
  2020.08.09 - UnitedKingdom - Added Helix U02 and Helix A50S. Gift of Philip Stanley Collection
  2020.08.08 - UnitedStates - Added[Replace] Nobema F4.
  2020.08.08 - Faber - Added[Replaced] Turning speed Calculator. National Acme Promo.and 63/91 dc 12/38 [P038] Gift of Philip Stanley Collection.
  2020.08.08 - Australia - Added Micadore Pocket, Made in Japan. Gift of Philip Stanley Collection.
  2020.08.08 - Germany - Added two Meissner KG slide rules, Multi and Darmstadt. Gift of Philip Stanley Collection.
  2020.08.07 - ISRM and other members of the Oughtred society that Conrad Schure passed away on July 4, 2020. Conrad was instrumental in organizing all of the early OS East Coast Meetings and while in good health, never missed a chance to visit the West Coast Meetings and attend the International Meetings. RIP.
  2020.08.07 - Received gift of slide rules from Phillip Rodley in Upperhutt, New Zealand.
  
  • 20.08.07.01 - Diwa No.901 Log Log Duplex decitrig. Marked M.J.Williams, CH (ChristsChurch) on flap
  • 20.08.07.02 - Unique Universal I Slide Rule Marked M.J.Williams, on sleeve and stock
  • 20.08.07.03 - PIC 10" Rule Slide R.A (Royal Artillery?) Made in England
  2020.08.06.01 - Recieved Weber 4281-5 originally from the Bob Otnes collection. To gallery.
  2020.08.06 - UnitedStates - Added[Replaced] Master Electric Pocket Slide Rule [P124]. Added Master Electric Co. history.
  2020.08.06 - Ricoh - Added Nikkie No. 150 gift of the Philip Stanley Collection
  2020.08.06 - SR_WhosWho - Added Richard M. Levin, co-founder of Jason Empire, which sold rebarnded Ricoh slide rules.
  2020.08.05 - SR_WhosWho - Added Wern brothers, Lars, Carl and George Wern, designers of the ABC Circular Slide Rule
  2020.08.04.01/M422 - Acquired a Weber 4280-M Mannheim-Trig made by Acu-Rule 1945
  2020.08.04 - UnitedStates - Replaced Globemaster 62000
  2020.08.04 - SR_Library/Japan - Added Advergi instructions
  2020.08.04 - SR_Library/USA - Added Felsenthal 450A instructions Philip Stanley Collection
  2020.08.04 - SR_Library/Post - Added Polar Rectangular Conversion Sheet For Post Slide Rules
  2020.08.04 - UnitedStates/Perrygraf - Added Datron Antenna design slide chart
  2020.08.04 - UnitedStates - Added John C.. Bellamy brand, Univ. of Chicago, Meteorology
  2020.08.04 - UnitedStates/Gerber - Added a couple of sales brochures
  2020.08.04 - Ephemera - Added images of Wern brothers, Lars, Carl and George Wern, designers of the ABC Circular Slide Rule
  2020.08.04 - Germany - Added images of two System Wern Models model IWA 1633 and IWA 1638
  2020.08.04 - SR_Library/Europe - Added two System Wern Manuals, model IWA 1633 and IWA 1638
  2020.08.04 - SR_Library/Japan - Added Hughes-Hemmi 301 Control Engineering slide rule instructions, sacn by Paul Ross.
  2020.08.03 - People with SRs - Added two composite images, from Gulf H.S., and Ice Station Zebra Movie.
  2020.08.03 - Aerospace - Added easy E6-B designed and made by Nicola Marras of Italy
  2020.08.03 - Calculators - Added image of SUNNY F-1660A Combination Electronic Calculator and Abacus (Soroban)
  2020.08.03 - SR_WhosWho - Added Carl and George Wern, designers of the ABC Circular Slide Rule and others produced by IWA in Germany.
  2020.08.03 - AbacciEphemera - Added 21 images (139 images total) showing abaci with people and in advertising.
  2020.08.03 - Abacus/Soraban - Made some edits on formatting, adding row numbers.
  2020.08.01 - UnitedStates - Added Digi-Craft Digital Thermometer, Metric Converter, Paper Weight.
  2020.07.31 - SR_Libray/Pickett - Added two Fisher Control Valvle Sizing slide rule (1041) instructions. 1954 and 1967.
  2020.07.31 - Aerospace - Moved Aerospace circular slide rule files from Circular/ directory to Aerospace/ directory.
  2020.07.30 - UnitedStates - Weber 42968 (Aristo Studio 968 Version 1) c1960. Scan by Stephen Wilde Collection.
  2020.07.29 - SR_Library/Pickett - Added 1080-T Petroleum Refinery Orific Calculator
  2020.07.28 - Ephemera - added over 100 images containing slide rules into the Ephemera (556 images), People w/SRs (659 images) and Comics w/SRs galleries (67 images), AbaciEphemera (119 images). Lots of good stuff from the 1940-1960's.
  2020.07.28 - Calculators - Added three ads. 1974 Heathkit, 1976 CBM and 1979 WH Smith.
  2020.07.28 - SR_Catalogs - Added Fuji Catalogue paper written by Jose Fernandez.
  2020.07.27 - Ephemera - Editing images for inclusion into the Ephemera, People with Slide rules and Media galleries,
  2020.07.16 - United States - Added [Replaced] Henschel Co. NY. 1087-A [P116], Engineering Sales ESCO 6002,
  2020.07.16 - Rarities - Added J.Harlan Slide Rule in Baldwin Locomotive Works. Owned by Alb B. Johnson, Jr. Gift of Philip Stanley Collection.
  2020.07.14 - Nestler - Added{Replaced} Model 0290 Polymath Duplex dc361 [REF]. Gift of Mike Simmonds, Hertfordshire, UK.
  2020.07.14 - United States - Added new brand Neal Feay and 3 slide rulle examples. Philip Stanley and Smithsonian Museum.
  2020.07.14 - United States - Added [Replaced] Empire Pedigree slide rules [P151 and P186]
  2020.07.14 - Received Eyre & Spottiswoode Draughtsman's set of cardboard scales from UK. Etsy.
  2020.07.14 - Received pocket watch mainsprings that can be used to fabricate cursor springs.
  2020.07.13 - Library-USA - Added Neal Feay Co Model LC-6 Cost Reduction Slide Rule Instructions_Gift Of Philip Stanley Collection
  2020.07.02.01 - Received APF Mark 31 Slide Rule Electronic calculator from ETSY.
  2020.07.01 - Finished assigning accenssion numbers to Philip Stanley pocket slide rule collection.
  2020.06.30.01 - Recieved gift of Post 1460 Versalog (Blk Cos, No Sn, No dc) Copyright 1951. from Dave Olshefski of NY. Belonged to father Paul J. Olshefski who worked at IBM in East Fisk, NY. To gallery. Earliest specimen.
  2020.06.29.01 - Received acquisition of slide rule tie-clasp, functional slide and cursor, for Novelty gallery
  2020.06.28/M - Received Roto-Rule manual (very fragile) from Louis P. Drapec of Star, Idaho.
  2020.06.27 - Happy birthday to Becky Konshak, the Director of ISRM, LLC.
  2020.06.24 - Began the task of assigning accenssion numbers to the Philip Stanley collection. At least 100 slide rules, previously undocumented, will be added to the galleries.
  2020.06.24 - Received two K&E manuals for the N4081 and N4083 from Nick Salvemani of North Plainfield, New Jersey.
  2020.06.24 - Aerospace - Added J.B. Carrol Co.Dead Reckoning Computer Type E-6B, Black anodized. Gift of John J. Doudera of Virginia Beach, Virginia.
  2020.06.24 - Comics w/SRs - added 5 drawings.
  2020.06.24 - MiscUSA - Added brand catagory for Plus and Minus Corp and Sum-Up slide rule. Added two examples.
  2020.06.23 - Charvoz-Roos - Added SR-105 (with Sterling 587 cursor).
  2020.06.23 - Nestler - Added 23R System Rietz, Gift of DR. Michael Sachs of Elkins Park, Pennsylvania..
  2020.06.23 - K&E Specialty - Added rare 4095 Merchant's slide rule with Time scale. Gift Of Matthew Grandy of New Sweden, Maine.
  2020.06.22 - United Kingdom - Added[replaced] Boots Ringplan Precision Log Log [S432]. gift of Ruth Stanier of Hereford, UK.
  2020.06.22 - PIC/Thornton Added[Replaced] P241 Standard Log Log [S293] gift of Ruth Stanier of Hereford, UK.
  2020.06.22 - Faber - Added: 363 Mannheim gift of Ruth Stanier of UK; 1/98/398 Electro gift of Diana Schmidt of Cedarville, California. 52/39/355 Basic gift of Ruth Stanier of Hereford, UK
  2020.06.22 - Pickett - Added: N500-ES HI LogLog with Grantham Electronics School logo, Gift of Barry J. Altman of Plymouth, Minnessota; N3-ES Exponential Log Log gift of Emily Castellucci of Columbus, Ohio; N4-T Vector Log Log gift of Dennis Dubberley of Raleigh, North Carolina; 803-T LogLog Standard Range gift of Rachel Katzer of Starkville, Mississippi. 902-ES Simple Trig No CI scale gift of Rachel Katzer of Starkville, Mississippi.
  2020.06.22 - Hemmi - Added: 30R 4inch Made In Occupied Japan. Gift of Barry J. Altman, belonged to uncle Robert N. Altman. 260 Advanced Engineer dc SC (19623) Gift of Caroline Young of Oak View, California,
  2020.06.21 - Pickett - Added[Replaced] N200-T [P078] gift of Col. Robert E. Loach of Burke, Virginia
  2020.06.20 - Aristo - Added 810 Gift of Dr. Michael Sachs of Elkins Park, Pennsylvania.
  2020.06.20 - Pickett - Added N600-ES Log Log, Curved braces. yellow round logo. Convex lens. Gift of A. Joseph Killian of Cedarville, California.
  2020.06.20 - Ricoh - Added Lafayette F686 Vector Log Log, Gift of A. Joseph Killian of Cedarville, California.
  2020.06.20 - Faber-Castell - Added 3 variations of 67/22 disponent, one specimen with addiator.. Gift of Dr. Michael Sachs of Pennsylvania
  2020.06.20 - Faber-Castell - Added 111/22 Disponent.Gift of Rachel Katzel of Starkville, Mississippi.
  2020.06.20 - KE_Standard - Added KE_N4053-3 Polyphase sn356497 Joseph Oschenschlager Killian with Bio and Photo.
  2020.06.18 - Lawrence - Added 10-B variation where Scales are silkscreened with Blue Ink on White Lacquer. Gift Of Peter Eickenberry
  2020.06.08.01/M407 - Received gift of Thornton P241 Standard Log Log from Joanna M. Sawicka of Winchester, Massachussettes. Replace S293
  2020.06.18 - Pickett - Added N1010-ES Trig RedTxt Square Braces Round Black Logo
  2020.06.18 - Pickett - Added[replaced] N-500-T Hi Log Log [S564] and N300-T LogLog pocket. Gifts of Gregory and Joy Playle of Alexandria, Virginia.
  2020.06.17 - Post - Added Post 1441 4" pocket with magnifier dcBE (May 1951) No Post Logo, No PI gage mark. Gift of Joy Payle, Alexandria, Virginia
  2020.06.17 - Germany - Added Staedtler-Mars No54401 Darmstadt dc87 Nestler Equivalents label. Pamela Eaton Collection
  2020.06.17 - Aristo - Added Aristo-Multilog 0970 dc652 (1965). Gift Lafayette_F-686of Leroy Hausler Collection.
  2020.06.17 - Faber - Added 57/89 early version. Gift of Jerome Drews of Kent, Washington.
  2020.06.17 - Graphoplex - Added 691 Hyperlog original design, superceeded by the 691a
  2020.06.17 - Dietzgen - Added[replace] 1737 Decitrig Log Log. [S328] and 1765 Basik [S296]. Gifts of Jerome Drews Collection, Kent Washington.
  2020.06.16 - Aristo - Added a rare Aristo Scholar 0903LL V2 dc3FL4 with a BI scale. Out of 14 different 903 Scholar variations, this is the only one with a BI scale.
  2020.06.16 - Aerospace - Added Cruver Mfg Time Distance Computer Type D-4, Gift of Roberta Henderson of Morgan Hill, California.
  2020.06.16 - Post - Added Pre WWII 1446 (Hemmi) gift of Jerome Drews Collection.
  2020.06.15 - Received K&E 68-1210 (4081-3) sn510215 from Col. Robert E. Loach of Burke, Virginia, Worked at U.S.Nuclear Regulatory Commission as Vice President
  
  • 20.06.15.01/M - K&E 68-1210 (4081-3) Decitrig sn510215 in Leather sleeve w/belt loop. with hardbound manual
  • 20.06.15.02 - Acumath 130 Log Log Decimal trig, Magnesium stock, brown sleeve. Lens cracked on corners. Replaces ISRM 11.11.17.07
  • 20.06.15.03 - Pickett N200-T Trig pocket in black leather vest sleeve. To Gallery.replace P078
  2020.06.15 - Received K&E 4058 Student slide rule, missing cursor from Julie DuBois of Camas, Washington.
  2020.06.14 - Pickett - Added/Replaced N-500-ES HI Log Log Modern Logo, Gift of Mary Ann Schwartz, of Doyelstown, Pennsylvania. They belonged to her husband Ronald Schwartz. Added bio. [replaced 11.11.22.02]
  2020.06.09 - Received gift of two slide rules from Emily Castellucci of Columbus, OH. Used by David Castellucci who worked at Hewlett-Packard in the 70s,and Teddy Castellucci who studied metalurgy as a welder.
  
  • 20.06.09.01 - Pickett N3-ES curved braces, Round black logo, flat lens. Brown Leather sleeve.To gallery
  • 20.06.09.02 - Pickett Model N600-ES, curved braces, Round black logo, flat lens. Brown Leather sleeve.
  2020.06.05.01 - Recieved gift of K&E 4095 Merchants slide rule with hour scale. All glass cursor. Gift of Matthew Grandy, New Sweden, Maine.
  2020.05.25 - Received slide rule loaner set of Acumath 400s back from Joe Blatt of California.
  2020.05.23.01 - Received gift of Faber Castell 1/87/387 System Rietz. Riveted laminations. RR track divisions. Missing cursor from Joe Blatt of California. German equivalents.
  2020.05.15.01 - Received gift of two slide rules and K&E Ecco drawing instruments from Anonymous donor.
  
  • 20.05.15.01 - Plus & Minus Slide-Rule Copyright 1939 by Max. B.A. Doring, Samual Lees. to gallery
  • 20.05.15.02 - Roos SR-105 missing cursor to gallery
  2020.05.12 - SR_Scales - Added section on Senxton's Omnimetre, scales created by Wayne Harrison.
  2020.05.12 - SR_Links - Added link to Wayne Harrison's scale site.
  2020.05.11 - MiscUSA Added Precision Scale Co (Art Eckel founder) catagory with images of his slide rules sold after Art left Pickett
  2020.04.30 - Received gift of Post 1447 Mannheim from Peggy Greig Coffman, of Eugene, Oregon. She used it in High school 1963-64. To School Loaner program.
  2020.04.22 - Hemmi - Added No.259 dcEC. Rev 2 scale set. Gift of Terry Whitsel collection, Loveland, Colorado.
  2020.04.22 - Soviet - Added 22 inch Rietz acquired from St. Petersburg, Russia.
  2020.04.22 - Military - Added/Replaced M24 75mm Howitzer Graphical Table Slide Rule set. Gift of Leroy Hausler Collection. Replaced single No3.
  2020.04.22 - SRM_Library/USA - Added two Spirule Root Locus Calculator instructions, 1959. 1965.
  2020.04.23 - MiscUSA - Added Spirule Root Locus Calculator 1951 variation. Gift of Gregory and Joy Playle, of Alexandria,Virginia.
  2020.04.23 - Hemmi - Added model 259 for Mechanical Engineers dcEC March 1954.
  2020.04.23 - BRL and SRM_Library/Catalogs - Added Blundell Limited Catalogue, also to the BRL Blundell page.
  2020.04.22 - Slide Rule Rescue - Shipped slide rule to Benny Barker of Orlando, Florida.
  2020.04.22 - SRM_Library/USA - Added W. Stanley Instruction (Lawrence 250-BT OEM) gifted by Jerome Drews
  2020.04.22 - SRM_Library/Nestler - added scans of instruction manual provided by Andreas Fassbender and one from Juergen Nestler.
  2020.04.17 - Received gift of slide rules from Dr. George Licari DDS, Lake Odessa, Michigan.
  
  • 20.04.17.01 - Pickett Model N600-ES in black leather pocket sleeve.
  • 20.04.17.02 - Pickett 120 Student narrow stock Scan box for gallery.
  • 20.04.17.03/M - Post 1447 Student Mannheim. dcGL To Student loaner
  2020.04.01 - Received gift of 380 pocket slide rules from the extensive Philip Stanley Collection. Philip Stanley of Worcester, MA, retired from engineering to become a full-time dealer in and appraiser of antique scientific instruments and tools as The Analytical Engine. He has written two books on antique measuring instruments, and numerous articles on instruments and technology, and has given several talks on these subjects. Phil appeared on the Antiques Road Show on PBS, as an appraiser, in 2012, 2013, 2014. The collection is organized in 31 individual bins labeled by various catagories by manufacturers. Asccenssion numbers based on Philip's I.D.s
  
  • 20.04.01.Bin01 - Misc A: 12ps
    • 20.04.01.328 - Amersham Radiographic Exposure Calculator 1988 Burlington, MA MiscUSA
    • 20.04.01.255 - AA Hong Kong,Basic slide rule, missing cursor to Relay Gallery
    • 20.04.01.414 - Aurthur Brown & Co. No.7997A Engraving Stainless Steel MiscUSA
    • 20.04.01.321 - American Moistening Co. Relative Humidity Metal MiscUSA
    • 20.04.01.002 - ALCO All-in-One SR with addiator. All metal Replace P266 MiscJapan
    • 20.04.01.277 - Acme Superstrip Weight Calculator, All metal MiscUSA
    • 20.04.01.062 - ALCLIN Slide rule, 1921 Direct Radiation HVAC MiscUSA
    • 20.04.01.207 - Atlas Copco Compressed Air Mains slide rule MiscUSA
    • 20.04.01.267 - Archimedse 11-C Brazil , Americas gallery
    • 20.04.01.165 - Alvin X-Act 222P Metric scale, made in Denmark, Relay gallery
    • 20.04.01.087 - Atlas 51, generic to MiscUSA
  • 20.04.01.Bin02 - Misc B-D: 18pcs
    • 20.04.01.TBD - CN Rail, Canadian National Railway, Metric converter, ASI9428 Made in Canada. To Americas
    • 20.04.01.285 - Calpini 6855 Duophase Marcu Reg.(Spain?)
    • 20.04.01.326 - Dall Inc, MN, Spe-D-Rule Slide rule and parallel bars. All metal to MiscUSA
    • 20.04.01.012 - Dall Inc. Versi-Rule. Slide Rule and Protractor. Similar to a sector. to MiscUSA
    • 20.04.01.410 - Carimex, Made in Romania. Soviet
    • 20.04.01.403 - Clearing Machine Corp, Press Tonnage Calculator, 1949 by Walter J.Mudlaty to MiscUSA
    • 20.04.01.212 - Durer Slide Rule No.5867. dc730 Germany. Same as F-C 67/54b Darmstadt. MiscUSA
    • 20.04.01.278 - Bristol Line P18-4, To Rescue
    • 20.04.01.237 - Bristol Line 19-5, To Rescue
    • 20.04.01.090 - Crofoot, Nielsen & Co, 6559 Dual 5/10" slide rule. (Roos).to MiscUSA or Roos
    • 20.04.01.430 - Gaebel Compositors Rule Proportion. All Metal SS. MiscUSA
    • 20.04.01.405 - Calpini 6863 Multiphase Marcas Reg.
    • 20.04.01.337 - Graphoplex British Petroleum Stack-Loss slide rule. To Graphoplex
    • 20.04.01.319 - C-Thru 27 Generic, Thin Film construction, To Rescue.
    • 20.04.01.089 - Berger Scientific Supplies L2145 dcL7-11,
    • 20.04.01.378 - Dakin (Relay) N.403 4 inch. to Relay
    • 20.04.01.287 - Louis A, Bedard Mfr. Lynn, MA c1931 (marriage record to) to MiscUSA
    • 20.04.01.222 - Continental Motors Corp. Engine Data. Made auto/motorcycle/aircraft engines. To MiscUSA
  • 20.04.01.Bin03 - Misc E-H: 16pcs
    • 20.04.01.313 - Human Factors Research, Los Angeles. All Metal. to MiscUSA
    • 20.04.01.082 - Empire Pencil Co. Pedigree, red slide. Made by Sterling Plastics. Replace P151
    • 20.04.01.320/M416 - Globemaster 62200 5 inch slide rule (Manual in Library M377) Replace P213 in MiscUSA
    • 20.04.01.236 - Foreign No.93 Basic to Japan
    • 20.04.01.345/M410 - Advergi (made by Foreign) 5 inch with instructions, promo Japan
    • 20.04.01.151 - Faber 63/918Gebrüder Theisen, Nürnberg, 1939. Fernruf 27401 Nurnberg , To Faber
    • 20.04.01.344 - Foxboro Flow Valve and Meter Rule c1975 To Rescue
    • 20.04.01.227/M415 - C. Felsenthal and Sons, Chicago. No. 450 Same as C-Thru No.27. To MiscUSA or new brand catagory. Bring in Dalton Computers.
    • 20.04.01.334/M411 - Helix U02. To British/UK
    • 20.04.01.334/M - Helix A508. To British/UK
    • 20.04.01.420 - Hono Rietz Jap.125. Red txt on slide. warped stock, missing cursor spring. Fabricated a spring by flattening stailess safetywire. To Spain/Italy
    • 20.04.01.365 - Hono Rietz Jap.125. Red txt on slide. in Red box. To Rescue
    • 20.04.01.316 - Hyde Optical Slide Rule. Made by P.A.S. Co. NY. Dist. by Henry Herbert. To MiscUSA new
    • 20.04.01.392 - Henschel Co. NY No.1087-A 1940 Replace P116 MiscUSA
    • 20.04.01.114 - English Electric Company Ltd.Pat appl 30421/38 Made in England.1920 -1930 To British/UK
    • 20.04.01.355 - Engineering Manufacturing Co. No.6002, ESCO of Sheboygan, Wis. Later Mayline Co., (Made by Roos). To MiscUSA or Roos.
    • 20.04.01.068/M412 - J.Halden & Co. Ltd. Westminster, London, Cardboard. knife edge cursor. Part of Locamotive Data Book. Owned by Alba B. Johnson, Jr.
    • 20.04.01.198 - Kent, Made in Japan, To Netherlands.
  • 20.04.01.Bin04 - Misc I-L: 13pcs
    • 20.04.01.384 - Jet Air Engineer Corp. Caliputer, caliper w/slide rule, Stainless steel. To MIscUSA new
    • 20.04.01.156 - Linex Factory, Denmark. To Nordic, Bring in two versions from HSRC
    • 20.04.01.374 - IRC, International Radiant Corp. NY, Percent Relative Humidity. To MiscUSA new
    • 20.04.01.190 - Kazet No.7 France or Spain?
    • 20.04.01.351 - IWA 5125. To Germany
    • 20.04.01.393 - Losztályu Logar MSZ 4617-57 to Eastern Europe. Include 10" from HSRC cat.
    • 20.04.01.325 - losztalvu MSZ 4617-57 Logar RR tracks divisions Duplicate To Rescue
    • 20.04.01.223 - Klawun 2, To Germany
    • 20.04.01.127 - Soviet LFAI Pocket 5161-49 1952. Replace P024. To USSR/Soviet
    • 20.04.01.182 - Indeco Rule, Metal and plastic stock. Plastic cursor. To MiscUSA
    • 20.04.01.066 - Lyra-Orlow 41/R Nurnberg, Germany. To Germany
    • 20.04.01.333 - Kutsuwa No. FN-401 Replace P127 in MiscJapan
  • 20.04.01.Bin05 - Misc M-Q: 11pcs
    • 20.04.01.103/M409 - Neal Feay Co. Model LC-6 Unit Cost Log Linear, Ave.Cost Log-Curvlinear. w/ Instructions. To MiscUSA
    • 20.04.01.426 - Neal Feay Co. Model CR-6 Unit Cost, Average Cost. To MiscUSA
    • 20.04.01.367 - Meissner Darmstadt To Germany
    • 20.04.01.399 - Meissner Multi Log Log. Replace REF To Germany
    • 20.04.01.385 - Master Electric Co.(made by Guedon/UNIS) Replace P124. To MIscUSA
    • 20.04.01.402 - Norden, Made in Sweden. A unique application of edge scales. To Nordic
    • 20.04.01.359 - Faber Castell. Turning Speeds. National Acme. Made in Germany. To Faber
    • 20.04.01.132 - Micadore Pocket, Made in Japan. To Australia.
    • 20.04.01.059 - Nobema No.F4, Made in England. Replace. To MiscUSA
    • 20.04.01.133 - Nippon S.R. Co.No.150, Nikkei Bamboo Slide Rule, missing cursor
    • 20.04.01.347 - Master Electric Co. Duplicate to Rescue
  • 20.04.01.Bin06 - Misc P-R: 9pcs
    • 20.04.01.314 - Unique Concrete Volume Computer, Made in England for Ready Mix Concrete. To Unique
    • 20.04.01.276 - H.P. Premier 2057 in retail card. Japan
    • 20.04.01.230 - Prestige Precision. USA (Acu-math design). Replace P188 to MiscUSA
    • 20.04.01.338 - Foreign Regal A50LL, To Japan
    • 20.04.01.225 - Renown Personal Calculator, slide rule w/addiator.To Japan
    • 20.04.01.180 - UGK R.P.L.P Sofia, Hungary. Duplicate to Rescue
    • 20.04.01.401 - Perrygraf Pacific Pumps slide chart, Volume, Stroke, eff. To MiscUSA
    • 20.04.01.147 - Prentiss 51 (Generic) Numbers on back 8,9,19. Made in Japan. To Japan.
    • 20.04.01.145 - Royal No.511 T&S Harrow Promo. To Japan.
  • 20.04.01.Bin07 - Misc S: 15pcs
    • 20.04.01.049 - School House slide rule (same as Santok and Sankyo) To MiscJapan
    • 20.04.01.048 - Santok with dual linear mm and inch scales. Duplicate to Rescue
    • 20.04.01.305 - Stafco 6-100 USAF Arial Photo #2A, Made by Pickett. To Aerospace
    • 20.04.01.197 - W.H.Smith Simplified Rietz. Made in England. Duplicate to Rescue
    • 20.04.01.204 - Simplon S.P.5 Primary Slide Rule. To British/UK
    • 20.04.01.272 - Studium, Regla de Calculo No.2, 1938
    • 20.04.01.283 - Seehase, Dr, Ing.Back is blank. Duplicate to Rescue
    • 20.04.01.307 - Santok with single linear 13cm scale. To Japan
    • 20.04.01.315 - Simplon S.B.5 Bilateral Replace P208 in British/UKHumidity
    • 20.04.01.105 - Skala (Kolmex Poland promo) Replace REF scan from Giovani
    • 20.04.01.290 - Staedtler-Mars 54501 Darmstadt. To Germany.
    • 20.04.01.112 - Siemens & Halske. To Germany
    • 20.04.01.298 - Sony Pocket Currency Converter. metal stock. To MiscJapan
    • 20.04.01.241 - Short & Mason Hygrorule. Made in England. Wood Substrate. To British/UK
    • 20.04.01.372 - SELSI No.751 (Relay No.505) Made in Japan. To Relay
  • 20.04.01.Bin08 - Misc T-Z: 9pcs
    • 20.04.01.386 - Dow Jones & Co. Publishers. Wall Street Journal. Stock Yield Calculator. MiscUSA
    • 20.04.01.318 - Ceil-Timisoara Type AN.11-9-71 Tehnolemn LEI-43.50 R.P.R.
    • 20.04.01.395 - White Motor Company, 1947. Truck Performance. to MiscUSA
    • 20.04.01.159 - Tecnostyl 41/R Italy. To Spain/Italy
    • 20.04.01.425 - Tokico Ltd. Generic to Misc Japan
    • 20.04.01.349 - Williams & Myer Co. Engraver's Image-sizing Rule. Thin film construction. To MiscUSA
    • 20.04.01.051 - Unis France, Inch rear scale. metal framed cursor. to France/Belgium
    • 20.04.01.289 - Ecobra VDM all-metal slide rule. (Vereinigte Deutsche Metallwerke a-g) To Germany
    • 20.04.01.311 - Yokogawa Electric Works Ltd. Valve and Meter Slide Rule. 1964-11. to Japan
    • 20.04.01.101 - TOBE, Norwood, Mass. dcHK-2 Made by Ricoh/Relay. Same as No.505. To Relay
    • 20.04.01.673 - Tower USA, No.5038. Possibly made by Roos. To MiscUSA
    • 20.04.01.102 - W.M.Welch Scientific Generic. Made by Graphic Calculator. to MiscUSA
    • 20.04.01.342 - X-Act 222-P, Denmark. Duplicate
    • 20.04.01.284 - World, Made in Japan
    • 20.04.01.138 - Veb Mantissa DDR Multi Log Log, Replace P107 Germany/DDR
    • 20.04.01.404 - IWA Rs338 Vogtwerke Z3,
    • 20.04.01.350 - Ecobra VDM all-metal slide rule. (Vereinigte Deutsche Metallwerke a-g) To Germany
    • 20.04.01.370 - Triso-Rietz Art.6501, Made in Germany. To Germany/DDR
  • 20.04.01.Bin09 - DDR Aristo, D&P: 19pcs
    • 20.04.01.330 - Aristo 815 Elektro. Replace REF (Rod Lovette). To Aristo
    • 20.04.01.003 - Aristo 867U Darmstadt. Duplicate to Rescue
    • 20.04.01.356 - Aristo Nr.10155 Soil Swell Pressure Slide Rule. To Aristo
    • 20.04.01.080 - Aristo Nr.803 Scholar. Replace 196 To Aristo
    • 20.04.01.050 - Aristo Nr.868 Studio dc 582. Replace P069 Variation 1
    • 20.04.01.364 - Aristo 80125.Gherzi Textil Organization Zurich. To Aristo
    • 20.04.01.007 - Aristo 890 Rietz. To Aristo
    • 20.04.01.238 - Aristo 812 Simplex. Replace P205 to Aristo
    • 20.04.01.124 - Aristo 829. Replace P160 to Aristo
    • 20.04.01.153 - Aristo 82 Karcher promo. To Aristo
    • 20.04.01.035 - Aristo 082 Walther promo. to Aristo
    • 20.04.01.299 - Aristo 845 Commerz-I. Replace P158 To Aristo
    • 20.04.01.169 - Dennert & Pape, Pocket. Gurney Ball Bearings promo. To Gallery
    • 20.04.0. 1.211 - Aristo 814 Elektro, Andrew promo. Replace P233 to gallery
    • 20.04.01.390 - Aristo 811 Puck. 4inch. To gallery.
    • 20.04.01.004 - Aristo 89 Dennert & Pape, Transistional model. to gallery
    • 20.04.01.172 - Dennert & Pape, 4inch. to gallery Version 1 Germany on Face, to gallery
    • 20.04.01.150 - Aristo 1083 4inch. dc523. Henschel Co.in well. To gallery
  • 20.04.01.Bin10 - Faber-Castell 1: 10pcs
    • 20.04.01.040 - Faber 67/54 Darmstadt dc51 Cursor is wrong,no hairlines to side scales. to gallery
    • 20.04.01.406 - Faber Castell. Turning Speeds. National Acme. Made in Germany. Duplicate to resecue
    • 20.04.01.258 - Faber 389 broken lens. To gallery
    • 20.04.01.250 - Faber 67/91 dc258. to gallery
    • 20.04.01.424 - Faber 67/21 dc750 la Casa del ingeiero, peru. to gallery
    • 20.04.01.018 - Faber 63/82 Duplex To Rescue
    • 20.04.01.019 - Faber 63/83 Duplex To rescue
    • 20.04.01.259 - Faber 61/98 Electro to gallery
    • 20.04.01.075 - Faber 369 to gallery replace REF
    • 20.04.01.056 - Faber 62/83 Replace REF ebay photo
  • 20.04.01.Bin11 - DDR Faber-Castell 2: 16pcd
    • 20.04.01.095 - Faber 67/98 Elektro. To Gallery
    • 20.04.01.162 - Faber 67/98b Elektro to Gallery
    • 20.04.01.183 - Faber 81 Klawun. dv57-7. to gallery.
    • 20.04.01.297 - Faber 67/39 dc562 to gallery
    • 20.04.01.015 - Faber 63/91/338/s to gallery
    • 20.04.01.245 - Faber 67/22 disponent Duplicate to rescue
    • 20.04.01.202 - Faber 63/87 Rietz To gallery
    • 20.04.01.022 - Faber 67/87 Rietz Duplicate to rescue
    • 20.04.01.137 - Faber 66/91 dc37-6 to gallery
    • 20.04.01.160 - Faber 63/39 40-12 dc Knorr-Bremse replace P068 to gallery
    • 20.04.01.072 - Faber 379 Elektro To gallery
    • 20.04.01.011 - Faber 163/81 Novo Mentor Duplicate to rescue
    • 20.04.01.108 - Faber 167/87 Rietz to gallery
    • 20.04.01.175/M - Faber 62/82 Biplex. Duplicate to rescue
    • 20.04.01.279 - Faber 73/39 dc36-2 to gallery
    • 20.04.01.301 - Faber 73/39 marked Hans Weinmann, Munchen. Duplicate to gallery
  • 20.04.01.Bin12 - USA K&E 1: 12pcs
    • 20.04.01.027 - KE 4161-1C sn464219 Replace P083 to gallery
    • 20.04.01.026 - KE 4153-1 sn009071 in box Duplicate to Rescue
    • 20.04.01.030 - KE 9068 Doric sn175205 green sleeve - Duplicate to Rescue
    • 20.04.01.081 - KE 4088-1 sn151029 all-glass cursor wide glass lens. To gallery.
    • 20.04.01.288 - KE Ecco 10000 (same as 9069 Doric) Duplicate to Gallery
    • 20.04.01.029 - KE 9061-1 sn7498 Duplicate to rescue
    • 20.04.01.025 - KE 4098A sn98817 REplace P113 to Gallery
    • 20.04.01.104 - KE 4150-1 sn090848 To gallery
    • 20.04.01.118 - KE 4097B sn34842 frameless cursor
    • 20.04.01.024 - KE 4097D sn142085 improved cursor Replace P222 to gallery
    • 20.04.01.154 - KE 4097 sn13318 Replace P241 to gallery
    • 20.04.01.111 - KE 4097C sn109804 Replace P150 to gallery
  • 20.04.01.Bin14 - USA Dietzgen: 11pcs
    • 20.04.01.423 - Dietzgen 1760-A Frameless cursor. to gallery
    • 20.04.01.266 - Dietzgen 1765W Handy No cursor Made by Roos to gallery
    • 20.04.01.013 - Dietzgen 1765F c1925 (Unis) Replace P234 to gallery
    • 20.04.01.199 - Dietzgen 1779 Pocket Log Replace P040 to gallery
    • 20.04.01.094 - Dietzgen 1773 dc861 aug 1961 Replace P200 to gallery
    • 20.04.01.121 - Dietzgen Redirule (Bruning 2401) thin metal framed cursor c1945 to gallery
    • 20.04.01.376 - Dietzgen 1774M (Germany US Zone) all-metal missing cursor Replace P221
    • 20.04.01.176 - Dietzgen 1772A pocket in retail case. Duplicate to Rescue
    • 20.04.01.014 - Dietzgen 1771 Redirule in retail box. Duplicate to Rescue
    • 20.04.01.077 - Dietzgen 1776 Redilrule in retail box. Duplicate to Rescue
    • 20.04.01.232 - Dietzgen 1778 Redi-log in retail box. Replace P040. To gallery
  • 20.04.01.Bin16 - USA Pickett 1: 16pcs
    • 20.04.01.038 - Pickett 61 Triangle Logo Duplex Duplicate to Rescue
    • 20.04.01.074 - Pickett 160 Modern Logo Duplicate to Rescue
    • 20.04.01.060 - Pickett N1006-T Trig Curved Braces Round blk logo. Replace P091
    • 20.04.01.177 - Pickett 400 Business Square braces round blk logo To Gallery
    • 20.04.01.110 - Pickett N300-ES Log Log curved braces round blk logo, Replace P149 To Gallery
    • 20.04.01.039 - Pickett N200-T Trig 1967 Curved Braces Modern Logo. Duplicate to Rescue
    • 20.04.01.037 - Pickett Model 20 Basic Replace Replace P077 To Gallery
    • 20.04.01.063 - Pickett N200-ES Curved Braces Modern Logo Duplicate to Rescue
    • 20.04.01.366 - Pickett 600 Log Log Round braces. Triangle Logo Metal bars To Gallery
    • 20.04.01.221 - Pickett 200 Log Round Braces Trianglr Logo in box Duplicate to Rescue
    • 20.04.01.113 - Pickett 62 curved braces triangle logo Replace P089 to gallery
    • 20.04.01.411 - Pickett 21 Real Estate Costimator To Gallery
    • 20.04.01.131 - Pickett N700-T USAF Aerial Photo Type A-2. Duplicate to Rescue
    • 20.04.01.158 - Pickett 160 Microline Mexico Enclosed in plexiglass box. To Rescue
    • 20.04.01.240 - Pickett Model 6 (Misprint s/b 61), grey braces, triangle logo. RARE To Gallery
    • 20.04.01.041 - Pickett 300 LogLog square braces. triangle logo. plastic case. To gallery
  • 20.04.01.Bin17 - JPN 1: Relay, Compass, Lutz, Jason, Micronta 13pcs
    • - Lutz 7900 to gallery
    • 20.04.01.322 - Jason 804 to gallery
    • 20.04.01.354 - Relay 505 MIOJ dc Z.S-2 to gallery
    • 20.04.01.189 - Relay SLR-6 dc H.K-1 to gallery
    • 20.04.01.140 - Micronta 505 dc H.K-1 Duplicate to Rescue
    • 20.04.01.310 - Compass 495 to gallery
    • 20.04.01.409 - Relay DB-517 to gallery
    • 20.04.01.155 - Relay 403 Duplicate to rescue
    • 20.04.01.360 - Compass 1320 To gallery
    • 20.04.01.282 - Compass 403 w/magnifyer Replace REF to gallery
    • 20.04.01.246 - Relay 550 dc H.K-4 white blocks different scale set. to gallery.
    • 20.04.01.086 - Relay B-516 to gallery
    • 20.04.01.196 - Compass 505 Duplicate to rescue
  • 20.04.01.Bin18 - JPN 2: Hope, Fuji, Jakar 10pcs
    • 20.04.01.148 - Fuji 552P . Log Log NIB. Replace P052 To MiscJapan
    • 20.04.01.149/MM- Fuji 543S Rietz, Replace P156 to MiscJapan
    • 20.04.01.216 - Fuji 551 Duplex. to MiscJapan
    • 20.04.01.382 - Fuji Rietz. Similar to P505 to MiscJapan
    • 20.04.01.107 - Jakar 523A Duplicate to Rescue
    • 20.04.01.254 - Jakar 523D DF/CF scales To MiscJapan
    • 20.04.01.340 - Jakar 511 Log Log To MiscJapan
    • 20.04.01.257 - Jakar 11 Rietz To MiscJapan
    • 20.04.01.023 - Hope 59 Log Log To MiscJapan
    • 20.04.01.244 - Hope 53 Basic To MiscJapan
  • 20.04.01.Bin19 - UK 1: BRL, Blundell 21pcs
    • 20.04.01.387 - B.R.L. S100 Duplicate to Rescue
    • 20.04.01.604 - Blundell Omega 604 Electro Replace P166
    • 20.04.01.261 - Blundell- Harling 143/2 To Gallery
    • 20.04.01.215 - BRL P19 Replace P022 to Gallery
    • 20.04.01.179 - Blundell Omega 605 to gallery
    • 20.04.01.070 - Blundel-Harling 812 Classmate, Red txt, to gallery
    • 20.04.01.130 - Blundell Omega 606 Replace P049 to gallery
    • 20.04.01.125 - Blundell-Harling S143-20. Duplicate To Rescue
    • 20.04.01.164 - Blundell Omega 602 Log-Log. Duplicate to Rescue
    • 20.04.01.361 - Blundell Omega 603 Darmstadt. to gallery
    • 20.04.01.361 - B.R.L. P28 Darmstadt. to gallery
    • 20.04.01.317 - B.R.L. P16 Electro. to gallery
    • 20.04.01.157 - B.R.L. P15 To gallery.
    • 20.04.01.352 - Blundell P1956 C.A.N. Circulation/Inch Rate (Rare only one) to gallery
    • 20.04.01.136 - Blundell Omega 601 Rietz. To gallery
    • 20.04.01.116 - Blundell Type P.8. Replace P146 to gallery
    • 20.04.01.375 - Blundell-Harling P4313 S.C.R.A.T.A. 1954 Radiographic. missing spring. To Gallery
    • 20.04.01.312 - B.R.L. P14 To gallery
    • 20.04.01.336 - B.R.L. S.100 Plastic cursor. To gallery
    • 20.04.01.339 - B.R.L. S.101. Replace REF. To gallery
  • 20.04.01.Bin20 - UK 2: Thornton, PIC, Boots Ringplan, Kingson, MiscUK 10pcs
    • 20.04.01.031 - Kingson Pocket Calculator, Empire Made. Reg.d in G.Britian to Orient
    • 20.04.01.083 - Kingson Pocket Calculator. Made in Hong Kong to Orient
    • 20.04.01.253 - Boots Ringplan Precision Log Log To British/UK
    • 20.04.01.220/M463 - Boots Ringplan Standard (Germany) To British/UK Replace P235 to British/UK
    • 20.04.01.273 - Boots Ringplan Standard . Made in Germany to Rescue
    • 20.04.01.335/M464 - Boots Ringplan Standard Made in Japan. To British/UK Replace P165 to British/UK
    • 20.04.01.186 - Thornton PIC VP114 Vest Pocket to British/UK
    • 20.04.01.252 - Thornton PIC VP124 Vest Pocket Replace REF, to British/UK
    • 20.04.01.260 - Thornton PIC VP104 Vest Pocket.to British/UK
    • 20.04.01.294 - Unbranded Made in England.Bendix Limited Promo, G.E.Petty
  • 20.04.01.Bin21 - UK 3: Unique, Classic
    • 20.04.01.265 - Unique Mini Slide Rule. Replace P020 to Unique
    • 20.04.01.093 - Unique Mini Slide Rule. Duplicate to Rescue
    • 20.04.01.228 - Unique Model D Dualistic High Speed to Unique
    • 20.04.01.203 - Classic Series II Replace P012 to British/UK
    • 20.04.01.067 - Unique Universal I Thin stock in box Replace P013 to Unique
    • 20.04.01.168 - Unique Universal I Thick stock.in box. to Unique
    • 20.04.01.069 - Classic Series I Replace P217 to British/UK
    • 20.04.01.085 - Unique Log Log Replace P009 to Unique
    • 20.04.01.167 - Classic Series III To British/UK
    • 20.04.01.229 - Unique Five-Ten Replace P199 to Unique
    • 20.04.01.188 - Unique Mini Slide Rule. One piece molded cursor. to Unique
    • 20.04.01.152 - Unique Mini Slide Rule. Yellowed. Duplicate to Rescue
  • 20.04.01.Bin22 - USA 1: Post, Roos, Weber, Guedon, Leitz 20pcs
    • 20.04.01.134 - Weber 4286P 5inch dcG5402(Aristo Western Zone of post-WWII Germany).To MiscUSA
    • 20.04.01.358 - Weber 4237 4inch (Nestler).To MiscUSA
    • 20.04.01.205 - Post 1441 Magnifying lens,dcBF (Hemmi).Duplicate to Rescue
    • 20.04.01.019 - Post 1441 MIOJ Magnifying Lens no date code c1945 (Hemmi).Duplicate to Rescue
    • 20.04.01.213 - Lietz 2072 4 inch (Nestler) To MiscUSA
    • 20.04.01.309 - Roos PSR-103A (Bruning 2401). To Charvoz-Roos
    • 20.04.01.243 - Weber 4287 5 inch (Germany). Replace REF to MIscUSA
    • 20.04.01.233 - Weber 4286 5inch Magnifying lens (Nestler).To MiscUSA
    • 20.04.01.210 - Roos PSR-101 missing cursor. Duplicate to Rescue
    • 20.04.01.360 - Roos OEM no mfg or model. (Roos PSR-101) To Charvoz-Roos
    • 20.04.01.078 - Roos SR-108 Duplex five-ten Replace P101 To Charvoz-Roos
    • 20.04.01.256/M423 - Guedon "The Miniature" with 5.5inch (UNIS France). to MiscUSA
    • 20.04.01.084 - Guedon Metal, A,B,C,D scale no CI. Early cursor. Duplicate to Rescue
    • 20.04.01.249 - Guedon Metal, A,B,C,D scale no CI. Early cursor. to MiscUSA
    • 20.04.01.170 - Post 1444P (Bruning 2401) No Post brand or model on rule. To Rescue
    • 20.04.01.428 - Post 1444K dcTE May1969 (Hemmi). Duplicate to Rescue
    • 20.04.01.044 - Post 1444K dcRL Dec1967 (Hemmi). Duplicate to Rescue
    • 20.04.01.061 - Post 1443 (Hemmi) Early 1936 Post logo. To Post
    • 20.04.01.181 - Lietz 2971N (Hemmi). Duplicate to Rescue
    • 20.04.01.296/M425 - Lietz 2971-P 5inch scale (Denmark). In box To MiscUSA
  • 20.04.01.Bin23 - USA 2: Acumath, Bruning 11pcs
    • 20.04.01.008 - Bruning 2401 thin metal frame cursor.Duplicate to Rescue
    • 20.04.01.280 - Acu-Math A-12 duplex (Boos Patent). To Acumath
    • 20.04.01.428/M438 - Bruning 2398 Duplex Replaced REF to MiscUSA
    • 20.04.01.185 - Bruning 2398 Duplex Duplicate to rescue
    • 20.04.01.010 - Bruning 68-540/2401 Duplicate to rescue
    • 20.04.01.100 - Bruning 68-540/2401 Duplicate to rescue
    • 20.04.01.193 - Acu-math 11 Mannheim Student To Acumath
    • 20.04.01.057 - Acumath 1200 Duplicate to rescue
    • 20.04.01.076 - Acumath 1240 No Logo Duplicate to rescue
    • 20.04.01.001 - Acumath 1211 oval logo Duplicate to rescue
    • 20.04.01.234 - Acumath 12 Mannheim yellow plastic stock Replaced P114
  • 20.04.01.Bin24 - USA 3: Sterling, Lawrence, Parisian, Misc USA 12pcs.
    • 20.04.01.126 - Lawrence 6-0p Flashrule 1946. Replace P173 to Lawrence
    • 20.04.01.226/M - Engineering Instruments 5B Learner, bundled with Draft-a-plan. Duplicate to Rescue
    • 20.04.01.032/M - Engineering Instruments 5B Learner, bundled with Draft-a-plan. Duplicate to Rescue
    • 20.04.01.050 - Lawrence Dick Tracy Code-Maker. To Lawrence.
    • 20.04.01.303 - Sterling 687 Retail Card, slide rule marked 587, to Rescue
    • 20.04.01.426 - Lawrence (5B) No medel or brand markings. Generic. Replace P001.To Lawrence.
    • 20.04.01.073 - Sterling 587. Duplicate to Rescue.
    • 20.04.01.161 - Sterling Pocket Metric Converter. Replace P168. To Sterling
    • 20.04.01.270 - Parisian Novelty Co. Tru-Flite Calculator Co. Aviation Computer. To Aerospace
    • 20.04.01.419 - Parisian Novelty Concrete Calculator. c1938. Newport Ready Mixed Concrete Promo. Brown sleeveTo MiscUSA
    • 20.04.01.099 - Parisian Novelty Co. Cost and Selling Price Calculator.(Additional Patents) To MiscUSA
    • 20.04.01.141 - Parisian Novelty Co. Mannheim. Sperry Promo. Duplicate
    • 20.04.01.407 - Whitehead-Hoag Machinists Cutting Speed Calculator. To MiscUSA
    • 20.04.01.184 - Frank L. Poper Musical Slide Rule. Copyright 1936, To MiscUSA
  • 20.04.01.Bin25 - DDR: Reiss, Ecobra, Logarex 15pcs
    • 20.04.01.293 - Logarex 27102, to East Euro
    • 20.04.01.192 - Logarex 27205 Toisen or Exponent, Replace P209 to East Euro
    • 20.04.01.174 - Logarex 27103 Rietz, Duplicate to Rescue
    • 20.04.01.033 - Logarex 4542-27203 Pragoexport Darmstadt
    • 20.04.01.302 - Ecobra R141 Rietz Replace REF to Germany/DDR
    • 20.04.01.368/M - Ecobra 1461 Sys Rietz.Replace P261. To Germany/DDR
    • 20.04.01.129 - Ecobra R143. To Germany/DDR
    • 20.04.01.017 - Ecobra 1461 Sys Rietz. Duplicate to rescue
    • 20.04.01.381 - Ecobra 1260 All-metal. To Germany/DDR
    • 20.04.01.239 - Ecobra 1260 All-metal. Duplicate to rescue
    • 20.04.01.135 - Reiss 3209 all-metal Replace REF To Germany/DDR
    • 20.04.01.191 - Reiss 3213 Darmstadt To Germany/DDR
    • 20.04.01.096 - Reiss 3212. all-metal Duplicate to Rescue
    • 20.04.01.304 - Reiss 37/350/1000 To Germany/DDR
  • 20.04.01.Bin26 - DDR: Nestler 9pcs
    • 20.04.01.251 - Albert_Nestler 41, 4inch. Earl's Concrete to gallery Version 1 missing lens and spring.
    • 20.04.01.264 - Albert_Nestler 41, 4inch. Duplicate to Rescue
    • 20.04.01.413 - Nestler no model# (41) 4in Duplicate to Rescue
    • 20.04.01.163 - Nestler 41 No cursor, Duplicate to Rescue
    • 20.04.01.412 - Nestler 12a metric 0-12.5 scale. To gallery
    • 20.04.01.109 - Nestler 0123 Rietz Replace P050
    • 20.04.01.122 - Nestler 42Z To Gallery
    • 20.04.01.092 - Nestler 0121 Darmstadt Replace P008 to gallery
    • 20.04.01.383 - Nester 115, no cursor or trig scales. to gallery
    • 20.04.01.065 - Nestler 11R, to gallery
    • 20.04.01.346 - Nestler 0140 to gallery
    • 20.04.01.422 - Nestler 0115 (Teknor) to gallery
  • 20.04.01.Bin27 - EUR: Graphoplex, Marc, Neolt, Marcantoni 11pcs
    • 20.04.01.171 - Rolls-Royce Promo slide rule to Graphoplex
    • 20.04.01.380 - Marcantoni 12.5 CA Concrete Calculator to Italy
    • 20.04.01.416 - Marcantoni 12.5 RB to Italy
    • 20.04.01.271 - Marcantoni 10 AB Replace REF to Italy
    • 20.04.01.269 - Neolt TSL 10 to Italy
    • 20.04.01.353 - Graphoplex BP/Shell oil calculator. to Graphoplex
    • 20.04.01.231 - Graphoplex 612 Replace P167 to Graphoplex
    • 20.04.01.416 - Marcantoni 12.5 AB to Italy Replace REFto Italy
    • 20.04.01.064 - Plastograf Ind.Bras. (Industria Brasileira) to Americas
    • 20.04.01.224 - Neolt TRS 12.5 to Italy
    • 20.04.01.268 - Plastograph to Americas
    • 20.04.01.119 - Depose Pratique MARC France, Guedon to France
  • 20.04.01.Bin28 - Nordic: Hoffman, UTO, DIWA, IWA 12pcs (check Philip sTanely scans sent in)
    • 20.04.01.292 - Diwa 611-1 Electro 611-1 Mfg name of front. To Nordic
    • 20.04.01.291 - UTO 661 Business Replace REF to Nordic (use image)
    • 20.04.01.281/M467 - Diwa 621 Replace REF. To Nordic (use image)
    • 20.04.01.142 - Hoffman UTO 602 Replace REF to Nordic (use image)
    • 20.04.01.343 - Diwa 631 Replace REF to Nordic (use image)
    • 20.04.01.427 - Diwa 641 Business rule Replace REF to Nordic (use image)
    • 20.04.01.016 - Diwa 601-1 Duplicate To Rescue
    • 20.04.01.217/M466 - UTO 651U Darmstadt Log Log "Thomas Mercer Promo" To Nordic
    • 20.04.01.214/M462 - Hoffman UTO 631U LogLog Duplex Replace REF to Nordic (use image)
    • 20.04.01.071 - Hoffman UTO 601 Rietz ALCO promo - to duplicates
    • 20.04.01.173/M461 - Hoffman 651U Duplolog Replace REF to Nordic (use image)
    • 20.04.01.054 - Diwa 601 Lear Promo 5in scale To Nordic
    • 20.04.01.053/M465 - Hoffman UTO 601 Rietz Metal/plastic cursor Duplicate
  • 20.04.01.Bin29 - Maker Unknown: Generic, Promo 7pcs
    • 20.04.01.128 - Generic Japan same as Santok ISRM 13.06.20.05. blue sleeve. Duplicate to Rescue
    • 20.04.01.418 - Generic Japan Strutherd-Dunn brown sleeve Duplicate to Rescue
    • 20.04.01.275 - Sankyo Generic Japan. Bourne promo. Duplicate to Rescue
    • 20.04.01.398 - Generic Japan. 3 piece cursor, lens shrunk binding rule. leather sleeve. to Japan
    • 20.04.01.348 - Sankyo Generic Japan. with inch scale. To Japan.
    • 20.04.01.397 - Sterling Rietz (Same stock as 587 and Empire Pedigree but more scales). to Sterling.
    • 20.04.01.263 - Weller's Bourbon Cost per drink calculator. C-thru or Graphic or...? To USA
  • 20.04.01.Bin30 - JPN 3: Lafayette, SIC/Scientific Instruments 8pcs
    • 20.04.01.357 - SIC 5510 diamond Logo Replace P245 to SIC
    • 20.04.01.143 - Lafayette F-681 Deci-Log Replace P162 to Ricoh
    • 20.04.01.120 - Ricoh 505 To Ricoh
    • 20.04.01.363 - Ricoh 535-S To Ricoh
    • 20.04.01.274 - SIC 5500 Replace P242 to SIC
    • 20.04.01.362 - SIC 4500 Replace P250 to SIC
    • 20.04.01.123 - Lafayette 99-70302 Duplicate to Rescue
    • 20.04.01.379/M - SIC 5050 Pocket Mannheim sn90035 diamond Logo in box Replace P249 to SIC
    • 20.04.01.286/M - SIC 4030 Junior Mannheim sn40327 diamond logo in box Replace P247 to SIC
    • 20.04.01.324/M - Lafayette F-340 dc I.K-4 To Ricoh
  • 20.04.01.Bin31 - JPN 4: Sun Hemmi, Geotec, Hughes-Owens, U.S. Blue 13pcs
    • 20.04.01.398 - Hemmi 30 w/magnifyer 4inch U.S.Blue Co.. to gallery
    • 20.04.01.091/M - Hemmi 34RK 5inch dcHG Jul1953. Rietz pocket slide rule. to gallery
    • 20.04.01.300 - Hemmi P33/5S. Basic. To Gallery
    • 20.04.01.047 - Geotec 341-3052 Duplex dcXH Aug1973
    • 20.04.01.195 - Hughes-Owens 1760 dcDJ 4inch (Hemmi 30) to gallery
    • 20.04.01.408 - Hemmi 4inch preWWII model 14 1926-29 SKF imprint in metal. To gallery
    • 20.04.01.341 - J.Hemmi 5inch preWWII model 8 1913-29 RRtrack scales. scale in well. to gallery.
    • 20.04.01.106 - Hemmi 2634 MIOJ 1945-50 Duplicate to Rescue
    • 20.04.01.323 - Hemmi 135 LogLog, Data Products promo, Replace REF to gallery.
    • 20.04.01.166 - Hughes-Owens 1762 MIOJ 1945-50 Duplicate to Rescue
    • 20.04.01.088 - Hemmi 74 System Rietz. dcHF Jun1953, Replace S243 to gallery.
    • 20.04.01.206 - Hemmi 30 10cm dcLS 1961. brand on bottom of stock. To gallery
    • 20.04.01.146 - Hemmi 30 NIB Plastic Cursor Instructions in spanish. To gallery
  2020.03.28 - Slide Rule Rescue - Shipped slide rules to Greg Dormer of Portland, OR.
  2020.03.26 - Received 7 ft pickett that was on loan to Ohio State University. Unfortunatly, it was destroyed in shipping. ISRM needs another 7ft 1010-ES for the archives.
  2020.03.16.01/M406 - Received gift of Hemmi 260 slide rule in sleeve from Catherine Young of Oak View, California, belonging to her grandfather, James Whittier Morrill who was an army chaplain and most likely bought the slide rule in Japan on one of his tours or traveling after retirement. He was promoted to a captain 1953. Replace REF.
  2020.03.14 - Received gift of 4 Pickett and Sterling slide rules from Mary Ann Schwartz of Doylestown, PA. Used by her husband Ronald Schwartz while studying at Drexel University. 1974 Bachelor of Science degree in Electrical Engineering. After graduation, he worked for the Department of the Navy until his retirement in 2002.
  2020.02.09 - Received gift of 3 slide rules from Ruth Stanier of Hereford, UK. The Boots Ringplan was hers and was given a present by her parents in 1970. She had asked for it. She trained as a teacher in 1977 and where they used slide rules in class to teach logarithms, rather than log tables. The two Fabers were used by a J.Heath Broadhead, a UK dentist, who died after 1990's.
  
  • 20.02.09.01 - A.W. Faber 363. Made in Bavaria. RR track scales. To Gallery
  • 20.02.09.02 - A.W. Faber 52/59/355. Made in Bavaria. Very dirty. Homemade cursor. Owned by A. Buccellati, Cario and Alexandria. To Gallery
  • 20.02.09.03/M405 - Boots Ringplan Precision Log Log (w/spare spring) in plastic sleeve with manual. To Gallery. Replace S432
  2020.01.30 - Recieved gift of slide rules from Mary Ann Schwartz, of Doyelstown, Pennsylvania. They belonged to her husband Ronald Schwartz. He studied at Drexel University, BS in 1974 in Electrical Engineering, then worked for the department of the Navy until retirement in 2002.
  
  • 20.01.30.01 - Pickett N-500-ES Hi LogLog Modern logo, Black Leather sleeve to gallery Replace 11.11.22.02
  • 20.01.30.02 - Pickett 120 narrow stock. To Loaner.
  • 20.01.30.03 - Sterling 694, no model number. To Loaner.
  • 20.01.30.04 - Acumath 400 to loaner
  • M405 Polar-rectangular conversion for Post slide rules. to Library
  2020.01.25.01 - Recieved gift of Post Versalog 1460 green COS, sn402322 dcNA (Jan 1963) from Stephen Pruch, of Eugene, Oregon. He used in the 60's when he was an engineering student at Cornell University and later working with the U.S. Forestry Service. Duplicate.
  2020.01.24.01/M - Received Radio Shack EC-490 Electronic Scientific Slide Rule Calculator.sn102832 Ebay.Merked with JC Fuller in pl;astic.
  2020.01.20 - Recieved gift of slide rules from Dr. Michael Sachs, of Elkins Park, Pennsylvania
  
  • 20.01.20.01 - Faber Castell 67/22 Rb Disponent w/Addiator sc11-61.Add to Gallery
  • 20.01.20.02 - Albert Nestler No. 23R System Rietz, Text in German (different label in well) - To gallery.
  • 20.01.20.03 - Faber Castell 67/22 Disponent dc 11-71 pocket 14cm, V2 alternate monetary scale. Buro furrer 8021 Zurich label. Add to Gallery replace P035
  • 20.01.20.04 - Aristo Puck Nr.810 pocket 10cm scale dcGFF2, Made in Germany. To gallery
  • 20.01.20.05 - Aristo Puck Nr.810 pocket 10cm scale dcGF01, Made in Germany.
  • 20.01.20.06 - Faber Castell 67/87 Rietz dc9?6 Coutinho, Caro & Co. promo.
  • 20.01.20.07 - Faber Castell 67/22 Disponent pocket 14cm dc 105, green sleeve, Leonh Niethammer, Frankfurt promo
  • 20.01.20.08 - Faber Castell 67/22 Disponent dc 3-55 pocket 14cm, V1 alternate split monetary scale.
  2020.01.06 - Received gifts of slide rules from Dennis Dubberley of Raleigh, North Carolina.
  • 20.01.06.01 - Pickett N4-T Square braces flat lens,Extended blocks. Brown leather sleeve. belt loop. To Gallery
  • 20.01.06.02 - KE 4081-3 sn 695058 1939-1947 Scale set, no logo or model name. leather sleeve, missing flap.
  • 20.01.06.03 - Sterling 694 Log Log Multi trig. To Loaner
  2020.01.03 - Received gifts of slide rules and calculators from Rachel Katzer of Starkville, Mississippi
  
  • 20.01.03.01 - Pickett 803-T Square braces flat lens,Extended blocks. rnd blk logo. Brown leather sleeve missing flap. To Gallery
  • 20.01.03.02 - Pickett N902-ES Simplex Trig. Sq braces flat lens. Rnd Blk Logo. Brown leathherette sleeve. to loaner.
  • 20.01.03.03 - Faber Castell 111/22 Disponent dc402. To gallery
  • 20.01.03.04 - Pickett N600-ES Curved braces, triangle logo, convex lens.Pocket sleeve has modern logo.
  • 20.01.03.05 - Acumath No.1240 pocket Oval logo.Replaced with entry in Gallery
  • 20.01.03.06 - Acumath 150 Log Log Decimal Trig Replaced 11.11.17.06
  • 20.01.03.07 - HP-28S Advanced Scientific Calculator (working) with reference and owner's manuals.
  • 20.01.03.08 - HP-12C Business Calculator working
  • 20.01.03.09 - TI-2500 Datamath Red LED Calc sn 2500-268365 1st generation. No removable batteries. Unknown
  • 20.01.03.10 - Sharp ELSI-MATE EL-5800 Green VFD sn62098997 scientific calculator to gallery
  • Misc LCD calculators and manuals, TI-30XA, TI-30XIIS, Casio fx-300MS (2ea) for adoption.
  2020.01.01 - Received gifts of approximately 100 slide charts and slide wheels belonging to the estate of John J. Doudera, of Virginia Beach, Virginia.
  
  • 20.01.01.01 - Dead Reckoning Computer Type E-6B, Black anodized. Mfr. J.B. Carrol Co., WWII era.
  • 20.01.01.02 - Jardur Model H Flight Calculator, 1943. Cardboard construction.
  • 20.01.01.03 - Perrygraf Tiolene Pure Oil Co. Flight Calculator, 1937. Cardboard construction
  • 20.01.01.04 - John C. Bellamy HorizontalTemperatureAndPressureGradiantScale, 1943. Cardboard construction
  • 20.01.01.05 - Perrygraf Matthews Co. Flight Calculator, 1937. Cardboard construction
  2020

  ---

  2019.12.14.01 - Recieved A.W.Faber-Castell 1/98/398 dc 4-39 Electro Metric units. Gift of Diana Schmidt of Cedarville, California. To Gallery
  2019.12.08 - Received gift of 3 slide rules from Barry J. Altman of Plymouth, Minnessota. He writes: I used the Pickett in 1974 at Grantham Electronics school in Los Angeles, California. The Hemmi pocket slide rule was used by my uncle Robert N. Altman who worked at Square-D and later with FMC's Military division. >br>
  • 19.12.08.01 - Pickett N-500-ES HI LogLog SR and Case Branded for Grantham Electronics Schools. https://www.grantham.edu/about-grantham/history/ To Gallery
  • 20.02.09.02 - Hemmi 30 w/magnifier MIOJ To Gallery Replace P223
  • 20.02.09.03 - Sterling 587 pocket slide rule w/instructions to rescue
  2019.12.05 - Received gift of slide rules from A. Joseph Killian (1946-?). Cederville, California. Biography and photo provided for Col. Joseph Oschenschlager Killian (1912-?).
  
  • 19.12.05.01 - KE N4053-3 sn356497. J.O. Killian on sleeve. To Gallery
  • 19.12.05.02 - Lafayette F-686 Vectorlog dc L.K-1 Leather sleeve w/belt loop to gallery
  • 19.12.05.03 - Pickett N600-ES Curved braces, triangle logo, convex lens.Pocket sleeve has modern logo. to gallery
  • 19.22.05.04 - Sterling 587 pocket slide rule
  2019.11.06 - MiscJapan - Added Sankyo catagory, with Sankyo pocket slide rule and instructions. Gift of Phillip Rodley of Upperhutt, New Zealand.
  2019.11.05 - Rarities - Added Farmer's Spirit Rule, 1926. Gift of Phillip Rodley of Upperhutt, New Zealand.
  2019.11.05 - Netherlands - Added Kent 309 Student. Gift of Phillip Rodley of Upperhutt, New Zealand.
  2019.11.03 - Slide Rule Rescue - Shipped slide rule to George Prociw (Canada via Michigan)
  2019.10.27 - Received gift of slide rules from Jerome (Jerry) Drews Collection, of Kent, Washington
  
  • 19.10.27.01 - Dietzgen 1737 Decimal Trig Type Log Log (Bamboo, Made by Ricoh). To gallery
  • 19.10.27.02 - Dietzgen 1765 Basik Germany dc1265. To Gallery
  • 19.10.27.03 - Faber Castell 57/89 Germany To Gallery
  • 19.10.27.04 - Pickett Model 500 Ortho-Phase LogLog sn 3C19838, early grooved stock. rounded braces CI scale with arrows. Updated font. To Gallery.
  • 19.10.27.05 - Pickett 902-T Simplex Trig Cast braces, cursor bars. Black Leather sleeve. swap
  • 19.10.27.06 - K&E 68-1210 Log Log Decitrig sn140175 4081-3 box
  • 19.10.27.07 - K&E 4095 Merchants slide rule sn 519867 with Instructions Partial box
  • 19.10.27.08 - K&E 4056 Favorite sn 596520 cardboard sleeve
  • 19.10.27.09 - K&E 4056 Favorite sn 598959 no sleeve to adopt
  • 19.10.27.10 - Frederick Post 1446 (Hemmi)
  • 19.10.27.11 - Post 1452W Universal dcRE Leather sleeve
  • 19.10.27.12 - Pickett Model 2 Early Black dot CI. Excellent
  • 19.10.27.13 - Post 1447 Mannheim
  • 19.10.27.14 - Post Versalog 1460 sn801266 Green COS. brown Leather Sleeve w/Belt Loop
  • 19.10.27.15 - K&E 68-1617 Polyphase all plastic Mannheim sn960061 Green Leather Sleeve
  • 19.10.27.16 - Pickett 120-ES Microline Wide stock Black Leatherette sleeve
  • 19.10.27.17 - Pickett 160-ES Microline Pocket Black Leatherette sleeve
  • 19.10.27.18 - Pickett 160-ES Microline Pocket Black Leatherette sleeve
  • 19.10.27.19 - Acumath 400 Mannheim - To loaner program
  • 19.10.27.20 - Acumath 150 Log Log Square braces, oval logo - To Gallery
  • 19.10.27.21 - Sterling Log Log - To loaner program
  • 19.10.27.22/M402 - Engineering Instruments 250-BT with Stanley's Instructions. blue sleeve. to gallery
  • 19.10.27.23 - Post 1446 Student, missing cursor. Variation no -D model number suffix - To Gallery
  • 19.10.27.24 - Hoffman No. 601 UTO GE Power Tubes Promo - To Gallery
  • 19.10.27.25 - C-Thru Thin Film Pocket slide rule
  • 19.10.27.26 - Sterling 587 Pocket slide rule
  2019.10.26 - Received gifts of slide rules from ISRM's most prolific benefactor in New Zealand, Phillip Rodley of Upper Hutt
  Note: these slide rules were previously labeled as 19.10.27.xx
  • 19.10.26.01/M401 - Farmar's Rule, 20 inch, for wine and spirits trade. sn7572, 1926 with manual
  • 19.10.26.02 - General Motors Truck Performance Rule 1945 Made by Graphic Calculator to MiscUSA
  • 19.10.26.03 - Kent Student 309 Duplex to Netherlands gallery
  • 19.10.26.04/M403 - Sankyo Generic Pocket Slide Rule, Promo: AEI with Instructions to misc Japan gallery
  • 19.10.26.05 - Pickett Model 1000 Magnesium Rounded Braces, Triangle Logo
  2019.10.16 - Slide Rule Rescue - Sent 50 slide rules to Ohio State University for their permanant use in "Hidden Figures" class
  2019.10.16 - People_wSRs - Added frames from video of Wernher von Braun, NASA lead scientist, explaining the possibility to reach the Moon. "Man and the Moon", Dec. 28, 1955
  2019.10.16 - Slide Rule Rescue - Sent 4 slide rules to Jose Fernandez in Spain
  2019.10.06.01 - Received Cruver Mfg. US Army Air Force Time Distance Computer Type D-4 from Roberta Henderson of Morgan Hill, CA.
  2019.10.07.01 - Received Lloy's Accumatic 321 Electronic (Slide Rul) calculator. Etsy.
  2019.10.06 - Scanned 20 and edited slide rule images to be added to the galleries>
  2019.10.06 - Slide Rule Rescue - Shipped slide rule to William Zeilstra (Michigan)
  2019.10.05 - Slide Rule Rescue - Shipped 2 slide rules to Maynard Wright (california) and Hubert Weikert (Germany).
  2019.10.04 - People w/SR - Added 4 photos and magazine ads showing slide rules icluding Maria Goeppert Mayer 1963 Nobel Prize winner In Physics
  2019.10.03 - Calculators - Added image and ephemera of Heathkit IC-2100 Slide Rule Calculator kit. from decodesystems.com
  2019.10.03 - People wSR - added 3 photos from various sources
  2019.10.03 - Concise _ Added 4ea Sama & Etani Science Tables: 600-ST gift of Becky Konshak. PhilcoFord Model 200-EE Hausler Collection, 600-ST_Nupro Promo, Harco Promo 600-CE
  2019.10.01 - Nordic - Added Diwa No.361 Log-Log dc75.Gifted by Sarah Coury. Now a Friend of the Museum of Sarasota, Florida. Repaired two broken links.
  2019.09.30.01 - Received Diwa No.361 Log-Log dc75.Gifted by Sarah Coury. Now a Friend of the Museum of Sarasota, Florida
  2019.09.23 - Hemmi - Added Hemmi model 70 Rietz, 50cm/20in scales, c1944. Gifted by Keith Wiley of Belmont, CA
  2019.09.23 - Post - Added 1460 Versalog sn607972 dcPD Apr65 Belonged To Carl A. Wiley (1918-1984) with bio and photos
  2019.09.23 - ISRM Associates - Updated Jim Cerny's hosted collection links
  2019.09.23 - Received gift of slide rules used by Carl A. Wiley. Gifted by sons Keith and Les Wiley
  
  • 19.09.23.01 - Post 1460 Versalog GreenCOS sn607972 dcPD Personal slide rule of Carl Atwood Wiley (name on flap)
  • 19.09.23.02 - Hemmi 20 inch model 70 Rietz
  2019.09.21 - Received donation of from Keith Wiley, for father Carl Wiley
  2019.08.10.01 - Received gift of Pickett 140-ES V2 and manual from Effie Burton of Parker Washington - Duplicate
  2019.08.04 - SR_WhosWho - Added Walter Richard Evans (1920-1999), inventor of the Spirule
  2019.08.04 - MiscUSA - Added The Spirule Co. catagory and two examples of the Spirule, Root Locus slide rule, one from Nathan Zeldes
  2019.08.04 - KE_Standard - Added 4088-3 Polyphase Duplex c1927 belonging to Peter Brooks Morton (c1938-2017) with bio. Gifted by widow Shirley Brooks.
  2019.07.20 - Shipped adopted slide rules out to George P. in Canada.
  2019.07.10 - Shipped adopted slide rules out to Doug C. in Johnstown, CO.
  2019.06.21.01 - Received gift of Nestler 0290 belonging to Mike Simmonds of Hertfordshire, UK
  2019.06.18 - Received gift of slide rules belonging to Peter Brooks Morton (c1938-2017). Gifted by wife Shirley Brooks.
  
  • 19.06.18.01 - K&E 4088-3 with new improved cursor. green leather sleeve in box.
  • 19.06.18.02/M400 - Spirule Slide rule 1959, with instructions in envelope
  2019.06.17 - Slide Rule Rescue - Updated, Added Hemmi and Aristo pocket slide rules
  2019.06.02.01 - Received Soviet Era 22 inch slide rule from Pavlonskaya of St. Petersburg, Russia
  2019.05.07 - Received a donation from Mark McCarty
  2019.05.04 - Received gift of slide rules and books from the Terry Whitsel of Loveland, Colorado
  
  • 19.05.04.01 - K&E 68-1100 Decilon 10 sn064283 Brown Leather Sleeve
  • 19.05.04.02 - K&E N4083-3 739244 Log Log Duplex Vector, Black Leather Sleeve. To gallery
  • 19.05.04.03 - K&E 4088-3 Duplex Polyphase sn612819 Pat. 1,930,852. Brown Leather sleeve intact. To gallery
  • 19.05.04.04 - Post 1462 Dual, (Made by Roos), white braces. Brown leather sleeve in red box.
  • 19.05.04.05 - Deitzgen No.1738 Improved Decimal Type Trig Log Log Rule. Magnesium. Brown leather sleeve.
  • 19.05.04.06 - Hemmi No.259 dcEC, broken lens. Rev 2 scale set.(repaired) To gallery
  • 19.05.04.07 - Pickett Model 1010-T Magnesium Rounded Braces black Logo. Grooved stock. Early Brown leather sleeve .
  • 19.05.04.08 - Pickett Model N1010-ES Modern Logo Black ICS sleeve.
  • 19.05.04.09 - Acumath 400 Mannheim. To school loaner sets
  • 19.05.04.10 - Pickett Microline 140-ES
  • 19.05.04.M1 - Slide Rules, - Dieter von Jezierski
  • 19.05.04.M2 - Slide Rules, Mistory, Models, Makers, - Peter Hopp
  • 19.05.04.M3 - Slide Rules, Mistory, Models, Makers, - Peter Hopp
  • 19.05.04.M4 - The Slide Rule Simplied, Explained. - Robert Riddell
  • 19.05.04.M5 - Calculating on Slide Rule and disk - Schuitemsa and van Herwijnen w/cd
  • 19.05.04.M6 - Post Instructions for Slide Rules -Ross Middlemiss
  • 19.05.04.M7 - History of the Logarithmic Slide Rule - Florian Cajori
  • 19.05.04.M8 - Instructions Improved Slide Rules - Routledge (reprint)
  • 19.05.04.M9 - Instructions Improved Slide Rules - Routledge (reprint)
  • 19.05.04.M10 - Carpenters Slide Rules, History and Use - Rabone (reprint)
  • 19.05.04.M11 - Slide Rule and How to Use It - Calvin Bishop
  2019.04.29 - Created a Facebook Page "ISRM". Search ISRM or @sliderulemuseum www.facebook.com/sliderulemuseum
  2019.04.29 - Received approval from Amazon to be a supported charity when you buy using on smile.amazon.com
  2019.04.17 - Hemmi - Added two variants of 50W.
  2019.04.17 - Netherlands - Added Ahrend Hemmi P282 LL. dcUG July1970. Gift of Colin Barnes
  2019.04.17 - Nordic - Added Diwa No. 14 Log Log Decitrig
  2019.04.17 - Relay/Ricoh - Added Lafayette 99-7102 Vectorlog and Jason No.801 Mannheim Trig.
  2019.04.17 - KE_Standard - Added K&E N4080-3 LoigLogDuplexTrig sn743809 Laminated Mahogany edge.with bio of original owner John Robert Baumann
  2019.04.14. - New acquisitions received
  • 19.04.14.01 - Lafayette 99-7102 Vectorlogo.dc O.S-1 with Brown leather sleeve
  • 19.04.14.01 - Diwa No.914. Made in Denmark.
  • 19.04.14.01 -
  • 19.04.14.01 -
  2019.04.06 - Received donations for slide rule adoptions from Phillip Rodley, New Zealand and
  2019.04.02 - Duplicates For Adoption - Added K&E, Pickett,Dietzgen and Faber-Castell
  2019.04.01 - Received donation from Michael Mjelde, a continued Patron of the Museum
  2019.04.01 - Duplicates For Adoption - Updated with available circular slide rules to the Adoption list. Assigned missing Accenssion numbers to some slides rules for list
  
  • 19.04.01.01 - Concise 600-ST Science Tables, Promo: Research-Cottrell (Duplicate)
  • 19.04.01.02 - Concise 600-CE Conversion Tables (1968) Insert CE. Nupro Promo. Add to Gallery
  • 19.04.01.03 - Concise 28. Motorola Logo. New. (Duplicate)
  • 19.04.01.04 - Faber-Castell 63/82 Biplex NOS (Duplicate)
  • 19.04.01.05 - Faber-Castell 63/83 Novo-Biplex NOS (Duplicate)
  • 19.04.01.06 - Dietzgen 1767 National
  • 19.04.01.07 - Unique Study 500
  • 19.04.01.08 - Unique Study 500
  • 19.04.01.09 - Unique Study 500
  • 19.04.01.10 - Sterling 651 Metric Converter
  • 19.04.01.11 - Acu-Math 511 Mannheim Professional
  • 19.04.01.12 - Acu-Math 400 Student Mannheim
  • 19.04.01.13 - Howitzer 155mm Graphical Firing Table charge 5&6 in khaki case
  • 19.04.01.14 - Acu-Math 1240 pocket Mannheim
  2019.03.31 - Received gift of slide rules belonging to John Robert Baumann. Gifted by his son G. Jeffroy Bauman. J.R. Bauman was an Electrical Engineer at Philidelphia Electric Company from 1950-1962, he then became a manager and finally supervising buyer.Picture is from his wedding in 1947.
  • 19.03.31.01 - K&E 4053-3 Polyphase Lot 635X. K scale on edge, pre1922. Red CI Scale. No cursor. S/B All glass cursor with edge hairline.black box. for restoration and adoption.
  • 19.03.31.02 - K&E 4081-3 LoigLogDuplex Decitrig sn571208 KERCS, good glass and frames.Corrosion on braces.with manual. For restoration - gifted to Ned Hurle
  • 19.03.31.03 - K&E N4080-3 LoigLogDuplexTrig sn743809 Laminated Mahogany edge. good glass, blocks and frames.Corrosion on braces.To gallery with bio.
  • 19.03.31.03 - Pickett 120 Trainer Black Braces. For Adoption
  • 19.03.31.04 - Mascot Pocket Slide Rule. Green Sleeve. with instructions. Replace 13.10.26.01 with bio
  • 19.03.31.05 - Concise 600 Tables Insert CF. Harco Logo.To Gallery.
  2019.03.31 - SR_Rescue - Sent 5 slide rules out to Friends of the Musem.
  2019.03.25.01 - Received gift of Jason 801 from Michael Banks. Agreed to send 3 slide rules in trade to friends children
  2019.03.22 - Pickett - Posted Model 114C Pocket Metric Conversion. of San Jose, California.
  2019.03.08 - Received gift of slide rules from Janet Dupont of Wacona, Minnessota. Belonged to her father
  
  • 19.03.08.01 - Post Versalog 1460 sn317153 dcMF. used by father in College and at 3M Corp.
  • 19.03.08.02 - Gilson Binary 8" diameter, torn sleeve.
  2019.03.08 - SlideRuleRescue - Added K&E slide rules to the duplicates list. More coming
  2019.03.07 - SlideRuleRescue - Made a PDF of duplicate Pickett slide rules available for adoption. Help us in this fund Raiser
  2019.02.22.02 - Received gift of Pickett Microline 120 from Larry Miller of Rye, Colorado. Added to slide rule loaner sets.
  2019.02.22.01 - Received Qualitron 1444 V2 Electronic Slide Rule
  2019.02.21 - Received gift of slide rules from Gregory (1956-) and Joy Playle (1957-) of Alexandria,Virginia.
  
  • 19.02.21.01 - Pickett N-500-T Hi Log Log, Modern Logo, curved braces. To Gallery. Replace S564
  • 19.02.21.02 - Pickett 800-T Log Log Red/Black scales Black round logo, square braces. Brown leather sleeve with "WEZ"
  • 19.02.21.03 - Pickett N300-T Log Log Duplex, Rnd Blk Logo, Curved braces, Suede sleeve has modern logo. To Gallery.
  • 19.02.21.04 - Post 1441 4" pocket with magnifier dcBE (May 1951) No Post Logo. To gallery. Belonged to Joy Payle in High School, it was first her brother's
  • 19.02.21.05 - Gilson Binary 8" diameter. (duplicate)
  • 19.02.21.06 - Sama & Etani Concise 600-ST Reference Tables (duplicate)
  • 19.02.21.07 - Soroban Abacus 13 x 4 x 1, all wood c1967. Gifts from father
  • 19.02.21 M272 - "The Japanese Abacus, its Use and Theory" by Takashi Kojima
  • 19.02.21.01 - Sterling 694 Decimal Trig Log Log ( to Loaner Program)
  • 19.02.21.08/M397 - Spirule Root Locus Calculator to gallery
  2019.02.21 - ISRM Associates - Jim Cerney has placed his first page on line
  2019.02.21 - SlideCharts - Added Royal Ordnance 81mm Mortor, Birkett WB400 safety Valve Calc
  2019.02.21 - Post - Added 1460 Versalog II dcVE 1971. TCSUC-13641 (Aircraft Registration?) Gift of Terrence Dunn of Bakersfield, CA
  2019.02.21 - SR_Library/Europe - Added - Faber-Castell 157-87 dc271 instruction. Gift Of Phillip Rodley, Upperhutt, NZ
  2019.02.21 - Faber - Added - Faber-Castell 157-87 dc271 cm Scale. Gift Of Phillip Rodley, Upperhutt, NZ
  2019.02.19 - Abaci Ephemera - Added 1906 image of Japanese Student using Soroban
  2019.02.18 - Calculators - Added Slimline TI-25 and TI-30 and TI-35
  2019.02.16 - Faber - Added Faber-Castell Scaling Slide Rule For Organ Pipes - System Rennsch. Gift of Phillip Rodley, Upper Hutt, New Zealand
  2019.02.16 - Post - Add 1460 Versalog sn124775 dcKL personal slide rule of Peter D. Eikenberry Sr. who gifted his collection to ISRM
  2019.02.16 - SR_Library/British - Added Otis King Model K Instructios - Gift of Lerot Hausler
  2019.02.16 - SlideCharts - Added Infilco Chemical Calculator, for Water Treatment. Copyright 1946. Gift of Leroy hausler
  2019.02.15 - Ephemera - Added 3 images of Addiator Ads from sources in Germany.
  2019.02.14 - SlideCharts - Added Rockwell Turbo-Meter sizing Calculator. Gift of Robert N. Curry Collection
  2019.02.12 - PIC/Thornton - Added PIC 121 with Rare Magnifier. Gift of Phillip Rodley. Upper Hutt, New Zealand.
  2019.02.12 - Acumath - Added "Acu-Rule" model 50. Gift of Peter D. Eickenberry Sr. of Olympia, Washington
  2019.02.12 - Ricoh - Added[Replaced] Ricoh 403 4inch Pocket Slide Rule - dc QS-2 (1968). Gift of Phillip Rodley. Upper Hutt, New Zealand.
  2019.02.12 - Pickett - Added[Replaced] Model 2-T Dual Base Log Log (1957)Reciprocal Scale. Gift of Karl W. Kornchuk of Caribou, Maine
  2019.02.11 - Pickett - Added[Replaced] Model 121 Trainer (grey braces), N803-T Log Log Speed Rule Dual Base (1960-75), Gift of Peter D. Eickenberry Sr. of Olympia, Washington
  N803-T - Log Log Speed Rule Dual Base 1960-75
  2019.02.11 - Americas(Mex/SA) - Added Keplar No. 1015 (version 1) simplex, from Brazil
  2019.02.11.01 - Received TI-35 Slimeline scientific calculator sn2889149 ATA4582 (slide rule mentioned in manual).
  2019.02.09.01 - Received TI-25 Slimeline scientific calculator sn561356 Japan 1978(slide rule mentioned in manual). Belonged to Carroll Kressel, who replaced Pickett Cleveland Institute of Electronics slide rule with this in 1978.
  2019.02.07 - Calculators - Created hyperlinks to year catagories for easier navigation..
  2019.02.06 - Ephemera - Added 3 images of slide rule Ads found in the University of Michigan Digital Archive from 1959-59.
  2019.02.06 - Calculators - Added over 50 images of calulator Ads found in the University of Michigan Digital Archive from 1971-1980.
  > 2019.02.04.01 - Received National Semiconductor 4650, scientific calculator (slide rule).
  2019.02.02.01 - Received TI-40 Advanced LCD Slide Rule.Bad dispal. sn0180673 ATA3781 (repair with TI-35)
  2019.02.01 - Acquired Slide rule calculators. TI-40, TI-35, NS 4650, SR-56
  2019.01.31.01 - Received Post 1460 Versalog II dcVE (1971) marked TCSUC-13641 from Terrence Dunn of Bakersfield, California.
  2019.01.29.- New calculator arivals. Radio Shack EC-281, SR-56, Rockwell 61R, Qualitron QI-2015, 2019.01.29.- Calculators - Radio Shack catalog pages.
  2019.01.29.- Calculators - Added photo of High School Graduate getting a present of an HP-35 in 1974
  2019.01.29 - Faber - Added 1/61/361 (1938)from Jorge Fabregas Zazza Collection at Reglasdecalculo.com
  2019.01.29 - People w/SRs - added drawing of Mary Golda Ross, Native American Space Engineer
  2019.01.28 - People w/SRs - added 5 new images
  2019.01.28 - Patents/FR - Added 12 patents from France
  2019.01.28 - Calculators - Added catalog pages showing calculators from 1973 through 1977
  2019.01.24 - Event Announcements - Annual Oughtred Society Metting in Las Vegas, NV. April 19-21. Information on registration and hotel accomodations at Ougtred.org
  2019.01.23 - Event announcement - IM2019. This year's International Meeting of Collectors of Historical Calculating Instruments, is being held September 20th to 21st, 2019 in Scheveningen and The Hague, The Netherlands, with an optional visit to a small local museum on Sunday September 22nd, 2019.
  Full details
  2019.01.16 - DemoSR - Added image of Welch ft from Nathan Zeldes, Israel. It has a custom cursor made of a picture frame.
  2019.01.11.01 - Received Kepler No. 1015 Pocket Slide Rule (Argentina). FELGRA, Una Garantia en Textos Universitarios (a "guarantee" in university texts)
  2019.01.11 - Ephemera - added 7 advertisements and article images from Polpular Electronics
  2019.01.08 - Comicsw/SRs - added 4 cartoons
  2019.01.03 - Ephemera - added 4 advertisements and article images and one to People w/SRs gallery
  2019.01.03 - SR_WhosWho - Added Andrew Kinsmen who create a popular postscipt file of a foldable slide rule that visitors can assemble.
  2019.01.02 - Received a donation from Jose Gabriel Fernandez of Spain
  2019

  ---

  2018.12.30 - Received gift of slide rules and electronic calculators from Peter D. Eickenberry, Sr. of Olympia, Washington
  
  • 18.12.30.01/M - Post 1460 Versalog sn124775 dcKL (Dec1960) Green COS. Personal Slide rule used by the collector. To gallery
  • 18.12.30.02 - British Thornton P271 Log Log (Duplicate)
  • 18.12.30.03 - K&E 4081-3 LogLogDuplex Decitrig sn774036 Penn State on sleeve (duplicate)
  • 18.12.30.04 - K&E 68-1617 Polyphase sn050555 (Box has 68-1622) Hoffman on sleeve (duplicate)
  • 18.12.30.05 - Pickett N4-ES LogLog Vector Hyperbolic Rnd Blk Logo, Square Braces. All Blk Scales. William B. Lord on sleeve. (Duplicate)
  • 18.12.30.06/M - Pickett N803-T LogLog Speed Rule, Rnd Blk Logo, Curved Braces. Magnifying lens. Red Inverse scales. Michael Ritter on black sleeve with loop. To Gallery, Replace David Hecht Gift.
  • 18.12.30.07/M - Pickett N902-ES Simplex Trig, Rnd Blk Logo, Square Braces. Don Silver scratched on stock. Brown sleeve. To School Loaners
  • 18.12.30.08 - Pickett 121 Trainer, Rnd Logo, Gray Braces. Don Silver scratched on stock. To Gallery
  • 18.12.30.09 - K&E 4081-3 Log Log Duplex Decitrig sn409944 KERCS, Cracked lens. NYU on sleeve. Scrap
  • 18.12.30.10 - Acu-Rule 50. Alternate Back printing. To Gallery
  • 18.12.30.11 - Acu-Math 150 Log Log Decimal Trig. Replace ISRM 11.11.17.06
  • 18.12.30.12 - Sterling 685. Replace.ISRM 11.11.10.01
  • 18.12.30.13 - Lotus-Flower Brand Abacus 2x5x13 Duplicate.
  • 18.12.30.14/M - Addimult Addiator. Replace
  • 18.12.30.15 - Lawrence 8-B, Wabash, Ind. Steven Garreth in well. Duplicate
  • 18.12.30.16 - Lawrence Eng. Service 10-B. Blue ink on white paint. Peru, "Indiana" not abreviated. Black sleeve. to gallery
  • 18.12.30.FS - (4) Sterling 684, (Duplicate) to loaners
  • 18.12.30.FS - Numerous modern calculators not in ISRM's mission
  2018.12.29 - Received a donation of from Mary J. Levasseur (
  2018.12.17.01 - Received Qualitron QI-1015 electronic scientific slide rule calculator. sn939504 Red LED display. from Serbia
  2018.12.17.01 - Received gift of Pickett Model 2-T from Karl W. Kornchuk of Caribou, Main. Broken lens. J. Kingsley written on flap.
  2018.12.17 - Ephemera w/SRs - Added 18 new images from Electronic Experimenter ans Science and Invention Magazines for the 1910-1930
  2018.12.15 - Received gift of slide charts from Robert Hockin of Komoka, Ontario, Canada
  
  • 18.12.15.01 - Perrygraf Fenwal Electronics G300A Thermistor Data & Curve Computer ©1974 in Envelope (Duplicate)
  • 18.12.15.02 - Perrygraf Fenwal Electronics G300A Thermistor Data & Curve Computer ©1974
  • 18.12.15.03 - Perrygraf Fenwal Electronics G300B (Larger format) Thermistor Data & Curve Computer ©1974
  2018.12.08 - Received gift of slide rules and charts from Phillip Rodley of Upper Hutt, New Zealand.
  
  • 18.12.08.01 - Ricoh 403 Pocket Bamboo Slide Rule, dcQ.S-2. Promo Legano. Italy
  • 18.12.08.02 - A.G. Thornton PIC No.121/ PC18 with Magnifying Glass.
  • 18.12.08.03 - Diwa No.301 Rietz. dc14, January 1954
  • 18.12.08.04 - Scaling Slide Rule for Organ Pipes. System Rensch. ©1986
  2018.12.06 - SR_WhosWho - Added Alphabetic menu to allow jumping to names quicker without scrolling
  2018.12.05 - Ephemera - Added 22 images/articles from Radio News and Wireles World (UK) from 1910-1970.
  2018.12.05 - SR_Terms/Glossary - Added entries on the 23rd Psalm "Don't marry an engineer" and importance of the "A Decimal Point"
  2018.12.03 - Ephemera w/SRs - Added 45 more images bringing the total to 558.
  2018.12.03 - Ephemera w/SRs - Added 57 more images bringing the total to 440.
  2018.12.01.01 - Received gift of a 6 ft Post Versalog Demonstration Slide Rule from Dave Sanner of Erie, Pennsylvania.
  2018.11.30 - MiscUSA/Bruning - Added 1955 Radio Shack ad featuring Bruning 10" slide Rule. Radio-News, September 1955
  2018.11.30 - Pickett - Added Deci-Point (model 1) news release from Radio-News, March 1946
  2018.11.29 - Ephemera w/SRs - Added more images bring the total to 383.
  2018.11.28 - DemonstrationSR - Added images of 8ft Williamsport War Models, owned by John Sampson, Phd. with articles from IIT Tech News
  2018.11.21 - SR_WhosWho - Added Samuel Pepys (23 February 1633 - 26 May 1703 ) Diary Quote "I was first to use the word 'Slide Rule'"
  2018.11.20 - SR_WhosWho - Added E.A. Sperry, the inventor of Sperry's (Pocket Watch) Calculator. Expanded Joseph L. Soper bio.
  2018.11.19 - Papers - Archived 60 issues of UKSRC Skid Stick.
  2018.11.19 - PocketWatches - Created Scientific Publishing and Gebr. Wichmann sub-catagory
  2018.11.19 - PocketWatches - Added[Replaced] H.C. Calculigraphe[REF], Gebr.Wichmann (1938), Scientific Publishing Chronograph c1900-1910, Fowlers Textile Calculator Short Scale w/Two Knobs, E.A.Sperry'sCalculator, Halden Calculex (early).
  2018.11.18 - Calculators - Added aa Calculator Ad from 1973
  2018.11.18 - People w/SRs - Added 15 new photos of people with a slide rule in the picture. found in various old Radio-Electronics magazines.
  2018.11.18 - Ephemera w/SRs - Added 36 new ads containing slide rules found in various old Radio-Electronics magazines.
  2018.11.14 - Pickett - Added[Replaced] N1010SL-ES Powertrig NIB [S539], N1010SL-T Powertrig NIB, N400-ES NIB, N4P-T Vectorlog [P071], N800-ES (1962), 800-ES . Gifts of Leroy G. Hausler Collection
  2018.11.13 - All HTML files (over 100) - Converted SRM/css and URL Links to new secure https://sliderulemuseum.com.
  2018.11.12 - Ephemera - Added 4 new ads containing slide rules found in various old Radio-Electronics magazines.
  2018.11.12 - Pickett - Added[Replaced] N-515-T CIE Electronic [S281], 1000 Ortho-Phase_Magnesium[S176] 1010-T [S180] Donald S. Bachelor Collection
  2018.11.12 - Pickett - Added[Replaced] 3-T Dula base Log Log Die Cast braces, N3-T Power Log Exponential [S129], Model 14 US Military Artillery Ranging (1959), Model 6-T Statistical Control 91962), model 200 Bethlehem Steel, 1000 newer artwork, N903-T Trig and Conversion.. Gift of Leroy Hausler Collection.
  2018.11.11 - Pickett - Added N200-T M.I.T. Sloan Fellowship promotional slide rule. Gift of Leroy Hausler Collection.
  2018.11.11 - Aristo - Added Nr.89 Inch scale McKenzie Promo, 867U Darmstadt (no date), 810 4in (no cursor). Gifts of Leroy Hausler Collection
  2018.11.10 - Adders - Added Kalkometer pocket Adding Machine, gift of Ed Millis. Played around with formating page.
  2018.11.10 - Nestler - Added Albert Nestler No.37 Early Cursor. (Same as Sergio Korelev model). Gift of Eileen S. Sappah, of Waretown, New Jersey
  2018.11.09.01 - Received Albert Nestler No.37 Early Cursor. Gift of Eileen S. Sappah, of Waretown, New Jersey
  2018.11.09 - Ephemera - Added 8 new ads containing slide rules found in various old electronics magazines.
  2018.11.09 - ISRM has applied for 501(c)3 (A57 - Science and Technology Museums) status through the State of Colorado. Colorado ID Number 20181884948, IRS EIN 83-2486423, operating as a non-profit public corporation as International Slide Rule Museum dba ISRM
  2018.11.09 - SIC - Added SIC 250 3"(SINCO Rototrig 100) variation. Gift Of Marylyn (Stubbs) Ulrich For George Ulrich. with bio and photo.
  2018.11.09 - Purchased SSL for ISRM to make it a secure HTTPS:// website ticket # 4683979 (Aplus.net Rep: Marlon). Any links going to www.sliderulemuseum.com will be redirected to https://sliderulemuseum.com
  2018.11.07 - Concise - Added Concise No.28 and Concise 320 with Calendar Variation. Gifts of Ed Mills and Bob Schwartz
  2018.11.07 - Lawrence - Added[Replaced] Engineering Instruments 10-B, Eng. Ist. (10-B No Model number, alternate back), Lawrence 250-BT. Gifts of Ronald S. Bachelor and Mike Weaver.
  2018.11.06 - Post - Added 1457 Mannheim Trig, Metal Braces c1946. Gift of Leroy Hausler Collection
  2018.11.06 - Acumath - Added[Replaced] Festus "Acu-Rule" 1938 [S343]. Acu-Math 150 blk substrate, 1200 blk braces[P065], 1240 no logo. Gifts of Don DiGalbo
  2018.11.06 - Nestler - Added Nr.0370 (Inch) Electro. Gift of Mike Weaver, UK
  2018.11.06 - Dietzgen - Added[Replaced] - 1767P National Early Cursor [S308], 1741 Novo Biplex Germany. Gifts of Ronald S. Bachelor Collection
  2018.11.06 - Nordic - Added[Replaced] Diwa Rietz-Ideal No. 1-1 dc25 [S315].Gift of Mike Weaver, UK
  2018.11.06 - EastEurope - Added Logarex 27602-II dc667 with cursor variation. gift of Mike Weaver, United Kingdom
  2018.11.06 - German/DDR - Added[Replace] Reiss 3214 Darmstadt-Record [REF], and Reiss 3212. Gift of Leroy Hausler Collection
  2018.11.06 - Ricoh - Added/[Replace] Lutz No.102 S U.S [S188]. Gift of Ronald S. Bachelor Collection
  2018.11.06 - Faber - Added A.W. Faber 345 System Hohenner. Gift of Donald S. Bachelor Collection
  2018.11.06 - MiscJapan - Added[Replaced Jakar 1013 Log Log, Jakar No.29 Student LogLog [S282] gift of Mike Weaver, United Kingdom
  2018.11.06 - Orient Added[Replaced] Flying Fish 1004 Vector [REF].Gift of Mike Weaver, UK, 1017 Chemical [REF] .Gift of Hausler Collection.
  2018.11.06 - Americas/Archimedes - Added Log Log Simplex. Gift of Mike Weaver, UK
  2018.11.05 - United Kingdom - Added W.H.Smith Simplified Reitz, Helix U07 Log Log. gift of Mike Weaver, United Kingdom
  2018.11.05 - MiscJapan - Added Royal 1002. gift of Mike Weaver, United Kingdom
  2018.11.05 - Unique - Added[Replace] Unique Brighton [S279], Universal [S069], Unique Ten-Twenty Version 2. gifts of Mike Weaver, United Kingdom
  2018.11.05 - PIC/Thornton - Added[Replace] PIC No.3654 [S212], PIC No.101 (inch scale). gifts of Mike Weaver, United Kingdom
  2018.11.05 - Blundell(BRL) - Added Blundell Luton G1 and G2, Bakelite Stocks, Blundell 802 LogLog, S100 Pocket SR. gifts of Mike Weaver, United Kingdom
  2018.11.05 - Aerospace - Added two The Technical Aeronatical Slide Rules
  2018.11.05 - United Kingdom - Added The Technical Aeronatical Slide Rule, Simplon Primary Log Log,gift of Mike Weaver, United Kingdom
  2018.11.05 - Calculators - Added Kings Point SC-40 Scientific ( slide rule),.
  2018.11.05 - Ephemera - Added 31 new ads containing slide rules from various old electronics magazines.
  2018.11.02 - People w/SRs - Added 2 new ads containing photos of people with slide rules from various old electronics magazines.
  2018.11.02 - Ephemera - Added 26 new ads containing slide rules from various old electronics magazines.
  2018.11.02 - Calculators - Added TEAL 826, .
  2018.11.01 - Calculators - Added Casio Memory-8A, FX-19, FX-250.
  2018.10.31 - Calculators - Added Casio Multi-8, Kings Point SPM-100 slide rule, Corvus 411 slide rule, box images for Lloyds Accumatic and TI SR-56
  2018.10.30 - Received gift of 100 slide rule manuals, catalogs, and related ephemera from Janet and Paul Laughlin of Jenkintown, PA. These belonged to Janet's father, Wayne E. Feely, PhD - (1931-2011) of Rydal, Pennsylvania. 2018.10.29 - Calculators - Added Qualitron 1444 Slide Rule V1, V2, v3. National Semiconductor Mathemetician, TI SR-56P, APF 31 and APF 50 slide rules calc.
  2018.10.29 - Pocket Watch - Added scan of 1926 Fowler Calculator parts breakdown
  2018.10.28 - Calculators - Added Kings Point KP-460 (1975), Kings Point SC-11 and SC-44 (1974)
  2018.10.27 - Calculators - Added Enterprex SR-65 w/manual (1975), Silver-Reed SR82S (1975),and ads and articles about calculators in 1975
  2018.10.26 - Acquired Electronic Slide Rule Calculators: Qualitron 1444 Slide Rule V1, Corvus 411 Slide Rule, Kings Point SC-40 Scientific and Kings Point SPM-100 Slide Rule.
  2018.10.24 - Received electronic slide rule calculators (pre-1978) through ISRM aquisitions, to be added to the archives.
  • 18.10.24.01 - Enterprex SR-65 Electronic Sliderule. sn5210146 Green VFD display. Working with case. manual and charger. Taiwan
  • 18.10.24.02 - Texas Inst. SR-56 programmable LTA0477(Apr 1977) with "programmable" on facia. With Box
  • 18.10.24.03 - Lloyd's Accumatic E999 Microelectronic Slide Rule Calculator sn 103139. In Original Box, w/ Manual, charger batteries case INOP w/ 4 batteries or charger
  • 18.10.24.04 - APF Mark 50 Scientific (Slide Rule) calculator snJ-086103 9V Battery. Works.
  • 18.10.24.05 - APF Mark 23 Electronic Slide Rule Calculator snR-003201 Japan. Works. With manual and sleeve..Replaced non-removable batteries. INOP . Duplicate
  • 18.10.24.06 - Kings Point SC-44 Scientific Slide Rule Calculator, 1975 With manual and sleeve.uses non-removable batteries. Replaced 3 NiCads. INOP Uses model 616 Charger
  • 18.10.24.07 - National Semiconductor Mathematician. Malaysia P347. Works with 9V battery
  • 18.10.24.08 - Kings Point KP-460 Electronic Slide Rule 9V Works with sleeve and manual. Works with 9V battery
  • 18.10.24.09 - Kings Point SPM-100 Slide Rule Electronic Slide Rule. with Model 616 ac Adaptor
  • 18.10.24.10 - Kings Point SC-11 Electronic Slide Rule.Works with sleeve and manual.
  • 18.10.24.11 - Canon Palmtronic Multi 8. Dual Display. Sqr Root w/ memory..sn 629605 Works with 3 AA battery
  • 18.10.24.12 - Casio Root-8S LED Slide Rule Calculator sn 2150133. Works with 4 AA battery. uses AD-4145 Adaptor
  • 18.10.24.13 - Casio FX-10 VFD Scientific (Slide Rule) Calculator sn2120532. with AD-4145 Adaptor.Works with 4 AA battery
  • 18.10.24.14 - Casio FX-19 VFD Scientific (Slide Rule) Calculator w/ sleeve. uses AD-4145 Adaptor.Works with 4 AA battery -
  • 18.10.24.15 - APF Mark 31 VFD Slide Rule calculator snW-003247 9V Battery.in wood desk stand Works
  • 18.10.24.16 - Silver Reed SR-82S VFD Slide Rule calculator snW-003247 9V Battery.in wood desk stand Works
  • 18.10.24.17 - Qualitron 1444 version 1 Slide rule calculator.4 AA. works. with black sleeve
  • 18.10.24.18 - Corvus 411 Electronic Slide Rule sn0155500. 4 nicads hardwired. working with A3310 6vdc adaptor, retail box, manual
  • 18.10.24.19 - Casio Memory-8A
  • 18.10.24.20 - Casio FX-250D Fraction 1991 LCD display
  • 18.10.24.21 - Kings Point SC-40 sn324496 Electronic Slide Rule.Works with sleeve and manual.
  2018.10.22.01 - Received gift 7 foot Pickett 1010-ES Demonstration slide rule from Barbara ORourke, used in Cromwell High School Cromwell, CT Science and Mathematics Departments
  2018.10.19.01 - Received 4081-3 LogLog Decitrig sn 688535 with Magnifier. Belonged to Donald F. capp Sr. Gifted by son Keith Capp.
  2018.10.18 - SR_Library/MiscEurope - Added Nestler nr.28 Geometer and Aristo 0958 Surveyor. Scans by Peter lang.
  2018.10.17 - MiscUSA - Added Novatni Merchant's Slide Rule.
  2018.10.17 - Ricoh - Added[Replaced] Lafayette 99-7030 dc M.K-3(1964)[P220}. Gifted by Donald Bachelor Collection
  2018.10.17 - Patents - Added lide rule pencil patents to databases: GB,DE, FR and US.
  2018.10.17 - Pickett- Added Pickett 112C Metric Converter (4 disks), Gift of Donald Bachelor Collection
  2018.10.17 - MiscUSA - Added No371 Concrete and Lumber Estimator to GUCO brand. Gift of Donald Bachelor Collection
  2018.10.17 - Slidecharts and MiscUSA - Added Chemical Mixing Calculator slide chart. Gift of Donald Bachelor Collection.
  2018.10.14 - Calculators - Acquired Casio FX-19 Scientific (Slide Rule) and Enterprex SR-65 Electronic Slide Rule Calculators
  2018.10.13 - Comics - This new gallery has now benn filled with images of slide rules appearing in Cartoons or Comics.
  2018.10.13 - Ephemera - Working on breaking up this gallery into 4. Novelties, People&SR, and Comics. Ephemera will contain print media like magazine ads. 2018.10.12 - Novelty - Began transfering images related to Novelties from Ephemera Gallery
  2018.10.12 - Pencils - This gallery is now complete excluding minor updates
  2018.10.10 - Pencils - Expanded gallery with images from Rodger Shepherd, and various places, including the US patent Office.
  2018.10.08 - Acquisitions - Calculators: Kings Point Model KP-460, Kings Point SC-11, TI SR-56 Programmable SLIDE-RULE, Lloyds Accumatic 999 Microelectronic Slide Rule, APF Mark 8601 Scientific Slide Rule
  2018.10.08 - Ephemera - Added Venus Perfect Drawing Pencils Ad with Slide Rule
  2018.10.08 - Novelty - Added Ruxton Multi-Vider Slide rule pencil. various sources
  2018.10.08 - SR_Patents/GB and BE - Added Ruxton Multi-Vider Slide rule pencil
  2018.10.08 - SR_Library/Post - Added Post Model 1464 8inch Binary Circular Slide Rule. Donald Bachelor collection
  2018.10.08 - Post - Added[Replaced] - Model 1464 8inch Binary Circular Slide Rule [C04]. Donald Bachelor collection
  2018.10.08 - Acquisitions - Calculators: APF 21 SR Calculator, APF 50 Scientific, APF 23 Slide Rule, APF Mark 31 slide rule
  2018.10.05 - Military - Added D&P German Gr.W.34 Artillery Ranging Slide Rule (1943). Donald S. Bachelor collection
  2018.10.05 - Received donation and sample wooden puzzle from the Boardman Family Trust. Allan J. Boardman is in the SR_WhosWho gallery.
  2018.10.05 - KE_Specialty - Added 4095-3 Merchant's Slide Rule with PDF of Manual and Cooks Radio Rule (no model number). Donald S. Bachelor collection
  2018.10.04 - Pickett- Added Pickett N800-ES LogLog Speed Rule, Gift of John Kachold
  2018.10.04.01 - Received gift of Pickett N800-ES LogLog Speed Rule, gift of John Kachold.who bought during high school. Halfway through college he switched majors and never used it again.
  Added Radio Shack EC-245 Statesman Thin Slide Rule Calculator with charger, gift from Dr. Christopher Fink, Ph.D. of Fredericksburg, Virginia.
  2018.10.03 - Calculators - Added 3 Silver-Reed Slide Rule Calculators using photos from other sources (attributes noted). SR81, SR, 82 and SR, 82S.
  2018.10.03 - The ISRM oversite committee authorised the purchase of a few Electronic Slide Rule Calculators of historical significance. Casio Root-8S, Casio FX-1, Kings point SC-44, National Semiconductor Mathemetician, Canon MD-8,. Other Casios desired FX-100. FX-101, Silver-Reed SR-82S
  2018.10.02 - Calculators - Added Unitrex Executron S874LR Electronic Slide Rule (1975), and Casio Memory-8 (1975), FX-10 Image, with supporting advertisements.
  2018.10.01.01 - Acquired Fowler's Magnum Long Scal Calculator from the UK. 2018.09.30 - SR_Library/Catalogs - Added Frederick Post No16 1930 Catalog. Donald S. Batchelor Collection
  2018.09.29.01 - United States - Received and added Novatni Weight Slide Rule 1st Version Pennsylvania Forge Corp
  2018.09.18 - Recevied a donation from Michael Fink of Australia
  2018.09.28.01 - Germany - Received and added Freidmann Mannheim RRTracks Scales Riveted Laminations English
  2018.09.26 - SR WhosWho - Added Allan J. Boardman, ex-employee of Pickett Industries.
  2018.09.26 - Pickett- Added 2007 JOS article at bottom of page: "Recollections of a Pickett Industries Employee" by Allan J. Boardman.
  2018.09.24 - Lawrence - Added note to Lawrence 10-C Engraver's slide rule. Typo in brand name Lawrence "Enginering" Service instead of "Engineering".
  2018.09.17 Received gift of slide rules belong to the Donald S. Batchelor Collection, by daughter Sarah Harrison, Fort Campbell, KY
  
  • 18.09.17.01 - K&E 4092-3 sn302473 all-glass cursor (one side cracked) Patent dates.(Duplicate)
  • 18.09.17.02 - K&E Cooke Radio Rule NoModel Number (4139) sn858377 Marked RMS No53. Add to Gallery
  • 18.09.17.03 - K&E 4080-3 sn863703 New improved cursor with KERCS. Marked George Murphy Okla AM ME (Duplicate)
  • 18.09.17.04/M394 - K&E 4095-3 Merchants rule sn 218002 all-glass cursor with Manual. Add to gallery.
  • 18.09.17.05 - K&E 4081-3 sn776175 1939 scale set NIC cracked glass.Case Marked "SOUP" Sigma Alpha Epsilon. Add To Gallery
  • 18.09.17.06 - K&E Pocket Decilon5 68-1130 sn019257 in box (Duplicate)
  • 18.09.17.07 - K&E 4070-3 sn459188 Green Sleeve. Don't put back in causing corrosion.(Duplicate)
  • 18.09.17.08 - Pickett No.1000 Synchro-Phase Duplex magnesium snD400378 Cloth sleeve. Replace S176
  • 18.09.17.09 - Pickett No.1000 Synchro-Phase Duplex magnesium snD301547 Cloth sleeve - (Duplicate)
  • 18.09.17.10 - Pickett N-515-T Cleveland Institute of Electronics. Modern Logo. Leather sleeve. Replace S281
  • 18.09.17.11 - Pickett N3-ES PowerLog Exponential. Brown leather sleeve. (duplicate)
  • 18.09.17.12 - Pickett 120 Trainer. Black Plastic Braces. Black sleeve Retail box. (Duplicate)
  • 18.09.17.13 - Pickett 120-T Narrow stock white braces.Black sleeve (Duplicate)
  • 18.09.17.14 - Pickett 120-ES Wide Stock. Black sleeve. Inverse scales vertical font. Version 1. To gallery
  • 18.09.17.15 - Sterling 694 Decimal Trig Log Log. Tan Sleeve.Instruction sheet.(duplicate) To Loaner
  • 18.09.17.16 - Pickett N902-ES Simplex Trig. Black leather sleeve. in retail box (Duplicate) To adoption
  • 18.09.17.17 - K&E 4181-1 Pocket Decitrig. Red and Black scales. Needs cleaning (Duplicate)
  • 18.09.17.18 - Sterling 694 Decimal Trig Log Log. Black Sleeve.Instruction sheet.(duplicate) To Loaner
  • 18.09.17.19 - Sterling 594 c1965 Decimal Trig Log Log. Grey Sleeve.Instruction sheet.(duplicate) To Loaner
  • 18.09.17.20/M395 - Post 1464 (Gilson) 8 inch diameter Binary. with Post Instructions. Replace REF C04 in Post and Circular and Gilson galleries.
  • 18.09.17.21 - D&P Gr.W.34 GWR M^auml;rz 1943 Artillery. Note says it was brought back during WWI by a colnel in Patton's army in Stuttgart. dc431 ade by Dennert & Pape.
  • 18.09.17.22 - AW Faber 345 Sys. Dr. Hohenner. English Equivalents. Made in Bavaria. RR tracks scales, riveted laminations. Add to Gallery
  • 18.09.17.23 - K&E American Blueprint Military Slide Rule KERCS (Duplicate)
  • 18.09.17.24 - Lutz No.102S U.S. M.I.J. Brown leather sleeve. Add to Gallery
  • 18.09.17.25 - Dietzgen 1741 Novo Biplex Germany. Brown leather sleeve. Add to Gallery
  • 18.09.17.26 - Post 1460 Versalog sn610084 Green COS. Brown Leather Sleeve. Name on flap: J.W,Dulin (Duplicate)
  • 18.09.17.27 - Post 1460 Versalog II with "A" scale, NoSn Green COS. Brown Leather Sleeve. Name on flap: Rick Crimi Sec. 345
  • 18.09.17.28 - Post 1460 Versalog sn123238 Green COS. dcHK Brown Leather Sleeve. (Duplicate)
  • 18.09.17.29 - Dietzgen 1744 Polymath Multiplex Decimal Trig Type. No sleeve.Excellent (Duplicate)
  • 18.09.17.30 - Post 1446 Prod/Quote scale Pre-WWII.Black cardboard sleeve (Duplicate)
  • 18.09.17.31 - Post 1447 Mannheim dcCK 1952 Black cardboard sleeve (Duplicate)
  • 18.09.17.32 - Post 1447 Mannheim dcCK 1952 Post Logo on slide. Red sleeve (Duplicate)
  • 18.09.17.33 - Post 1447 Mannheim dcGL 1956 Post Logo on upper stock. Missing Cursor.. Red sleeve (Duplicate)
  • 18.09.17.35 - Lafayette 99-7030 dc MK-3. Pocket slide rule. Embossed: BJ Centrilif. Replace P220
  • 18.09.17.34 - Dietzgen 1767P National Early Cursor. Replace S308
  • 18.09.17.36 - Lawrence Engineering Services 250-BT 503 on slide. Red ink on back printing. Add to Gallery.
  • 18.09.17.37 - Engineering Instruments 10-B. Add to Gallery.
  • 18.09.17.38 - Festus "Acu-Rule" Festus, MO. Magnifying, Cursor. Replace S289
  • 18.09.17.39 - Acu-math 400. To Loaners.
  • 18.09.17.40 - Post 1444-D Commerce Plastic Cursor. (Duplicate)
  • 18.09.17.41 - Sama & Etani/Concise CTCS-552 Slide Rule - Copyright 1966. (Duplicate)
  • 18.09.17.42 - Pickett 112-C Metric Convertor 4 disks. Replace REF
  • 18.09.17.43 - Kieley & Mueller Valve Capacity Calculator, 1947.Add to Gallery.
  • 18.09.17.44 - Perrygraf Mixing Equipment Co. "Lightnin Mixers" and Agitators.Slide Rule. Add to Gallery.
  • 18.09.17.45 - C-Thru 27 Pocket slide rule with instructions (Duplicate)
  • 18.09.17.46 - Tube Turns Gaseous Liquids Calculator. Add to slide chart Gallery
  • 18.09.17.47 - Perrygraf W.R.Grace Davidson Pressure Drop Estimator.1968. to Slide Chart archive.
  • 18.09.17.48 - Perrygraf M.W.Kellog Co. Equilibrium-flash-calculator. 1956. To slide chart archive.
  • 18.09.17.49 - Carpenter Stainless Tubing Tech. Data. To slide chart archive.
  • 18.09.17.50 - Honeywell Valve size calculator. To slide chart archive.
  • 18.09.17.51 - J&L Steel Wire Rope Ton Mile Calculator. To slide chart archive.
  • 18.09.17.52 - Perrygraf Cleaver-Brooks Boilers.1951. To slide chart archive.
  • 18.09.17.53 - Slide Chart Corp. 1971 US to Metric conversions. To slide chart archive.
  • 18.09.17.54 - Alpine American Partical Size Calculator 1969 (2 each). To slide chart archive.
  • 18.09.17.55 - Royal Ordnance Ammunition Ltd. 81mm mortar circular slide rule. ©1986. To gallery
  • M396 - Frederick Post No16 1930 Catalog. to gallery
  2018.09.16.01 - Received Easy E6-B Flight Calculator designed and made by Nicola Marras of Italy.
  2018.09.15.01 - Received Unitrex Executron S874LR Electronic Slide Rule Calculator. Ebay purchase from Canada. $25
  2018.09.07-10 - Busy, Busy, Busy, but fun. I've been editing hundreds of images and soon will be posting the composites to the galleries.
  2018.09.07 - Calculators - Added Rockwel 64RD Advanced Slide Rule Calculator. Gift of Marti and manny Leinz of Chino, CA. Added numerous calculator ads from Popular Science and New Scientist Magazine
  2018.09.05 - Adders - Added The Lightning Calculator. 1921-1942. Gift of Phillip Rodley, Upper Hutt, New Zealand.
  2018.09.05 - MiscUSA - Added GUCO No. 139 Thin Film Slide Rule, similar to C-Thru. Gift of Leroy Hausler Collection
  2018.09.05 - K&E_Standard - Revised bio on John Vincent Atanasoff origination of the first Digital Computer. from an interview with J.V.A. Jr. and the Curator.
  2018.09.05 - France - Added Framed Circular Slide Rule, Unknown Manufacturer, Phot0 provided by Nathan Zeldes in Jeruselum, Israel
  2018.09.04 - Post - Added[Replaced] Post 1447 Made In Occupied Japan S452, Leroy Hausler Collection. Post 1444-D Commerce, Robert Curry Collection.
  2018.08.19 - Aristo - Added Dennert & Pae (D&P) No.21 Elektro Log Log. Gift of Leroy Hausler Collection.
  2018.08.19 - KE_Standard - Added[Replaced] 4088-3 Polyphase Duplex sn137431 1927, Gift of Ellen Hathaway. 4071-3 Duplex Trig sn014420 [S304]. 4055 Favorite sn 833111, Hausler Collection.
  2018.08.18 - KE_Specialty - Added K&E 4139 Cooke Radio Rule (SRT scale) - sn452225 and K&E 4143 Kissam Stadia (for Surveyors) sn399383. Gifts of Leroy Hausler Collecction.
  2018.08.16 - KE_Standard - Added[Replaced] K&E 4080-5 20inch LogLogTrig sn896492 New Scale Set, 4070-3_ Duplex Trig sn251113 [S303]. Gift Of Leroy Hausler Collection
  2018.08.15 - KE_Standard - Added K&E 4092-3 Log Log Duplex sn282613, 3 Patent Dates (Pat. June 5, '00 - Dec. 22, '08 - April 1, 1924) Gift Of Bill Boas
  2018.08.10.01 - Military - Added Howitzer 155mm High Angle 7R Charge Vietnam Era slide rule Oct1972 to existing set. Acquisition source unknown.
  2018.08.09 - KE_Standard - Added N4083-3 sn833117 Vector LogLog bio info, Belonged to Claude Ellis Johnson (1918-2003) NASA Engineer, Huntsville, Alabama. Notes from daughter, Claudia 10/15/07
  2018.08.09 - SR_Library/KE - Added M345 K&E Polyphase Duplex Trig No. 4070 Slide Rule Manual copyright 1939, gifted by Ellen Hathaway
  2018.08.08 - SR_Library/British - Added Fowler Universal Calculator manual M392. belongedto Richard Levy
  2018.08.08 - Lawrence - Added Engineering Instruments 250-BT belonging to Marilyn Stobbs Ulrich, and Copper Wire Calculator gifted by Leroy Hausler Collection.
  2018.08.07 - PocketWatch - Added Fowler Universal Calculator belonged to Richard Levy
  2018.08.07 - Concise - Added Sama &Etani 600 (AVCO) belonged belonging to Richard Levy
  2018.08.06 - Received 4 slide rules belonging to Richard Levy (1932-2017). Gifted by his his wife, Midge Levy, and his son Benjamin Levy of Vancouver, Washington.
  
  • 18.08.06.01/M392 - Fowler's "Universal" Calculator, to Gallery
  • 18.08.06.02 - Concise Model 600, Sam & Etani Model Periodic Tables, AVCO Everette Research Lab. To Gallery
  • 18.08.06.03 - Concise Model 600-ST, Sam & Etani Model Periodic Tables - . Duplicate SIP Engineering Promo
  • 18.08.06.04 - Pickett N902-ES Simplex Trig. Duplicate Add to loaner set.
  2018.08.01.01 - Received US Armed Forces Reliability Computer Naval Explosive Ordanance R&D 6in Dia to Military gallery
  2018.07.31 - Dietzgen - Added[Replaced] 1732 Decimal Trig log Log sn527230. Gift of Mike Weaver of UK
  2018.07.31 - Nestler - Added[Replaced] Nr.0130 Multimath[P130], No 21 Darmstadt [S436], Nr 0239 Rietz. Hausler, Barnes Collections
  2018.07.30 - Pickett - Added[Replaced] Model 520 Type A-1 Aerial Photo, Magnesium. Model 700 Type A-1 Pocket. Hausler Collection
  2018.07.30 - Post - Added[Replaced] Teledyne Post 44AC-600 Versalog II dcWF [S081]. Hausler Collection
  2018.07.30 - Dietzgen - Added[Replaced] 1735 Vector Type Log Log Early Frameless Cursor [S508]. Hausler Collection
  2018.07.30 - Faber - Added[Replaced] 163/81 Novo Mentor [P108], 57/87 Rietz dc 473. 2/83 Log Log Duplex [S256], 111/87, 1/98 Elektro. 1/87 Rietz [S118]. 57/87 Rietz [S004], 57/89 Austria. Hausler and Barnes collections.
  2018.07.30 - Faber - Added[Replaced] 4 variations of the 52/82 23 and 23 scales. 52/82 D-Stab Swiss [S242], 52/82 NoDStabMarks Germany, 52/82 NoDStabMarks Swiss, Gifts of Hausler, Weaver, Barnes Collections.
  2018.07.29 - Dietzgen - Added[Replaced] 1739-L Clear-Scale [S357] Same As FC 52-82 Germany. Gift of Dick Rose
  2018.07.29 - Blundell/BRL - Added[Replaced] _BRL_Academy_304_Darmstadt [S237] Gift Of Colin Barnes UK
  2018.07.29 - Aristo - Added[Replaced] Nr.909 Multitrig [S351], 0901 Junior WFX25 [04.11.10.03], Aristo 99 dcG596 [S99], 0970 multilog dc577, 0969 StudioLog dc2LI5 Wide Cursor. Gifts of Hausler Collection and Colin Barnes
  2018.07.29 - Charvoz-Roos - Added Charvoz 0903 Scholar (Aristo) dcG5725. Gift of James J. Pennel Family
  2018.07.28 - Hemmi/Geotec - Added[Replaced] Geotec 341-3012 Versalog II [REF]. Gift of the Leroy Hausler Collection
  2018.07.28 - Post - Added Teledyne Post 1422 LogLog (Hemmi P262). Gift of Leroy Hausler Collection
  2018.07.28 - Aristo - Added[Replaced] 903 Scholar LL dcG6237 [S202] Gift Of Colin Barnes UK
  2018.07.28 - Hemmi - Added Hemmi 250 Basic Trig dcMH Aug 1962. Gift of Leroy Hausler Collection
  2018.07.28 - Post - Added 1462H Postrig Made In Occupied Japan. Belonged to Dr. Richard E. Chandler, Prof. Emeritus, NCSU. Gift of Leroy Hausler Collection
  2018.07.28 - Library/Europe - Added ISRM M388 1/54 and 111/54 Darmstadt with Addiator Instructions. Gift of Bill Boas
  2018.07.28 - Library/Japan - Added ISRM M391 Relay Bamboo Slide Rule Instructions. Gift of Bill Boas
  2018.07.27 - Post - Added Teledyne Post 44BA-470 (same scales as 1447) with photos and bio Gift of William (Bill) A. Boas of Wray, Colorado
  2018.07.27 - Faber - Added Faber-Castell 111/54A Darmstadt Slide Rule w/Addiator with photos and bio Gift of William (Bill) A. Boas of Wray, Colorado
  2018.07.27 - Ricoh - Added Skyline No.505 (Relay) dcH.K-4 (1959) and Lutz 151P Multilog. with photos and bio of William (Bill) A. Boas
  2018.07.26 - Hemmi - Added Hemmi 40RK dcTA Bamboo and P40RK dcTH. Gifted by Dick Rose. Hemmi 153 no dc Original owner William B. Wood
  2018.07.26 - Received gifts of slide rules from William (Bill) A. Boas of Wray, Colorado. Bill was a previous donor in 2006.
  
  • 18.07.26.01 - K&E 68-2224 Slide Rule Magnifier
  • 18.07.26.02 - K&E 4092-3 Sn282613 LogLogDuplex name on sleeve:Wiley, O.E, 3 patent datea, New addition
  • 18.07.26.03 - Lutz No151P dc 0.S-2 (Relay) New addition
  • 18.07.26.04/M391 - Skyline (RelayNo.505) dc H.K-4 New addition
  • 18.07.26.05/M388 - Faber-Castell 111/54A Darmstadt Slide Rule w/Addiator New addition
  • 18.07.26.06 - Teledyne Post 44BA-470 New addition
  2018.07.25 - New - Acquired two slide rules locally, originally belonging to William (Bill) Barry Wood Phd. Retired C.U. Distinguished Professor of MCD Biology, Emeritus
  
  • 18.07.25.01 - K&E 4092-3 w/Magnifier sn371243
  • 18.07.25.02 - Hemmi 153 Electrical Engineer No Date Code (has broken lens) in Dietzgen sleeve.
  2018.07.25 - Blundell - Added[Replaced] Blundell Harling 803 Rietz[S092], BRL 300 Academy, BRL 303 Reitz Academy. Gifts of Colin Barnes, United Kingdom
  2018.07.24 - Blundell - Added[Replaced] Blundell Harling 904 Duplex LogLog [S347]. Gift of Colin Barnes, United Kingdom
  2018.07.24 - KE_Standard - Added[Replaced] KE 4053-3 Lot 17 c1916 [10.03.01.10] Donated by Ann Morton of Lakewood, Colorado, Daughter of Henry Stuart Morton
  2018.07.24 - MiscJapan - Added Jakar No99 Duplex LogLog. Gift of Colin Barnes, United Barnes. Jakar No.1011 LogLog, Gift of Dick Rose
  2018.07.24 - Hemmi - Added[Replaced] Sun Hemmi P280 [Ahrend 435660 is in Netherland Gallery]. Gift of Colin Barnes, United Kingdom
  2018.07.24 - Aerospace - Added Cox & Stevens Fairchild C119/RQ4 Load Adjuster Slide Rule. Gift of James Pennel Collection
  2018.07.23 - Graphoplex - Added[Replaced] No. 1600. [S255]. Gift of Leroy Hausler Collection.
  2018.07.23 - Pickett - Added[Replaced] N904-ES Decimal Keeper [13.02.20.03]. G. Gift of Dorinda Wong, Pleasanton, California. Magnesium 902 1949 [S175] Round braces, Triangle Cursor, Gift of James Pennell Collection
  2018.07.23 - Pickett - Added Model 52T Aerial Photo Slide Rule. Mexico. Aerodyne Contract. Gift of Mark Mazzella in honor of owner Howard Nelson, Goshen, NY
  2018.07.23 - KE_Standard - Added[Replaced] 68-1648 Old 4153-1 [P110]LoadAdjuster_C119-RQ4 Gift of Leroy Hausler
  2018.07.23 - Post - Added Post Versalog dc FF (1955) (Blk Cos, no SN) belonged to Dean Keith Edmonds, Gifted by son Robert Edmonds, Broomfield, Colorado,br> 2018.07.23.01 - KE_Standard - Added[Replaced] Found undocumented K&E 68-1555 Doric (old 4168) sn046449.[P104], 4098 sn 34544 [12.06.24.28 if located],
  2018.07.22 - KE_Standard - Added[Replaced] 4151-1 [P003]. 4181-1 belonged to Dean Keith Edmonds, Gifted by son Robert Edmonds, Broomfield, Colorado,br> 2018.07.22 - Post - Added[Replaced] 1441 PreWWII_US Blue1888 [P128], 1441 MIOJ, 1441 No Post Logo dcFF 1955. 1441 dcKF [P147]. Gifts of Ed Millis and James Pennel Collections.
  2018.07.22 - Post - Added[Replaced] 1447K dcOA (Hemmi on front), 1444K dcEF No Post Oval Logo (Hemmi on back)[P121], 1444K dcLD Post Oval Logo (Hemmi on back)[P170] Gifts of Ed Millis.
  2018.07.22 - Military - Added 75mm Howitzer M24 (Chaffee Tank) No.3 vGraphical Firing Table. Gift of Ed Millis.
  2018.07.22 - Nordic - Added UTO 651U Darmstdt Hellerman. Gift of Mike Weaver of Bridgend, United Kingdom.
  2018.07.22 - British - Added[Replaced] W.H. Smith Simplified Reitz [P207]. Gift of Mike Weaver of Bridgend, United Kingdom.
  2018.07.21 - France/MARC - Added two MARC Pocket slide rules. Gift of Ed Millis, Dallas, Texas
  2018.07.21 - MiscUSA - Added[Replaced] Guedon MARC Licence Made in France[P153], Promo Builders Iron Foundry Ad. Gift of Ed Millis
  2018.07.20 - MiscUSA - Added[Replaced] Charles Bruning 2401 Early Cursor [P163]. Added Bruning 2410 with Texas Instruments Logo.
  2018.07.20 - Nordic - Added Diaw 601-1 V2 Lockheed Engineers and Scientist Guild Promo. Gift of Ed Millis
  2018.07.20 - MiscUSA - Created B.F. Grizzle sub gallery. Added 1971 Water line capacity SR. Duplicated Grizzle slide rule in Lawrence gallery.
  2018.07.20 - Pickett - Added Photo of Polly Hattemer of Redondo Beach to her Pickett N-16-ES slide rule
  2018.07.20 - Nordic - Added scans of Diwa 621, 631 Duplex, 641, 661; UTO 602, 631, 661, 651U Duplolog, 651U Darmstadt. Scans from/by Phil Stanley Collection
  2018.07.19 - MiscUSA - Added Novotni Paper Board Slide Rule (1917). Scan by Phil Stanley
  2018.07.18 - Circular - Added Hutchinson Calculator No.2 Gas and Flow through Pipes. with Manual. Belonged to Robert N. Curry.
  2018.07.18 - MiscUSA - Added 2 American Journal Gas Flow Computers to Whitehead and Hoag brand. Belonged to Robert N. Curry.
  2018.07.18 - MiscUSA - Added Perrygraph SR catagory for slide charts with slide rules scale. Added 3 slide charts belonging to Robert N. Curry.
  2018.07.18 - Aerospace - Added Felsenthal Co FNA-9 Dalton Dead Reckoning Computer Variant. Gift of Leroy G. Hausler Collection
  2018.07.18 - Circular - Added Lufkin Rule Company Screw Thread and Tap Drill chart
  2018.07.18 - Aerospace - Batori USA, Navigational/Vector Computer. B-23, Type Made in Switzerland
  2018.07.18 - MiscUSA - Lietz catagory. Added 1894 Science and Engineering magazine article on the Lietz company
  2018.07.18 - Circular - Moved T&T Fast Calculator to MiscUSA Gallery. Moved related items to Aeroospace and Military Galleries.
  2018.07.17 - Adders - Added Sheradco Fraction Of An Inch Adding Machine. Gift of Ed Millis.
  2018.07.17 - MiscUSA - Added Whitehead & Hoag brand sub-gallery: added 4 more slide rules from ISRM and MIT galleries
  2018.07.17 - BrandIndex - Added Whitehead & Hoag, Newark, New Jersey.
  2018.07.17 - MiscUSA - Added Whitehead & Hoag Slide Rules: Heliopot Promo and Aeronav Instruments. Gift Of Ed Millis
  
  2018.07.17 - - Hemmi - Added Model 30 10cm pocket slide rule belonging to Arnold D. Straussman (c1908-1983) with bio and photo. Gifted by his daughter Judith B. King. 2018.07.17 - - KE_Standard - Added 4092-3 Vector Log Log sn100651 and 4088-1 Polyphase Duplex sn298504. belonging to Arnold D. Straussman (c1908-1983) with bio and photo. Gifted by his daughter Judith B. King. 2018.07.16 - Aerospace - Added Aeronav Instruments Private Pilots Flight Computer Model-I. Made by Whitehead and Hoag. Gift Of Ed Millis
  2018.07.16 - SR_WhosWho - Added entry for Millie Ludwig, who owned Grafton Plastics of Grafton, Wisconsin, that made rebranded slide rules for companies like Bruning and Post.
  2018.07.16 - SR_Terms - Added entry for Grafton Plastics of Grafton, Wisconsin, that made rebranded slide rules for companies like Bruning and Post. It was owned by Millie Ludwig and her husband.
  2018.07.16 - Received gift of 3 slide rules belonging to Arnold D. Straussman (c1908-1983) with bio and photo, by his daughter Judith B. King.
  • 18.07.16.01 - K&E 4092-3 Vector Log Log sn100651. 1922-1926. Times Roman Font. New Improved cursor (should have all-glass cursor). to gallery.
  • 18.07.16,02 - K&E 4088-1 Polyphase duplex. sn 298504. Times Roman Font. swap
  • 18.07.16,03 - Hemmi 30 4 inch dcOL 1964. to gallery.
  2018.07.15 - Military - Added J.A. Nicholl & Co. APP OBS OF FIRE SLIDE RULE. Gift of Phillip Rodley, Upperhutt, NZ
  2018.07.15 - Unique - Added Dualistic High Speed Slide Rule . Ten-Twenty Slide Rule [REF], Gift of Ed Millis 2018.07.15 - United Kingdom - Added The Technical Aeronautical Slide Rule. Gift Of Ed Millis,br> 2018.07.15 - Dietzgen - Added 1735 Vector Type Log Log Rule, sn 111567. Gift of Ed Millis
  2018.07.15 - KE_Standard - Added[replaced] 4058C Beginners Slide rule, Version 1 [S478}, 4058C V2. Gifts of Ed Millis, Dallas Texas.
  2018.07.15 - KE_Specialty - Added N-4100 Stadia rule sn623559. Gift of Ed Millis, Dallas Texas.
  2018.07.15 - KE_Standard - Added[replaced] 4035 Lot 2 all-glass cursor. K&E 4088-3 sn70104 1927 Times Roman Font[S438]. 4093-3 Duplex Vector sn52044 [S263], 4088-3 LogLogDuplex Vector sn833117 1952[S013]. N4053-3 sn61784 c1924 [S584] Gifts of Ed Millis, Dallas Texas.
  2018.07.15 - Rarities - Added Dring & Fage DF312 Customs Excise Rule Jan 5, 1862, 24inch.gift Of Phillip Rodley, Upperhutt, NZ
  2018.07.15 - KE_Standard - Added K&E N4088-5 20" Polyphase sn545519 c1938. 4071-3 Polyphase sn 596150. Gift of Ed Millis, Dallas Texas.
  2018.07.15 - Lawrence - Added[Replaced] B.F. Grizzle Gas Pipe Line Slide Rule [Ref]. Belonged to Robert N. Curry.
  2018.07.14 - Aerospace - Added Goble Airline Pilots Flight Computer. Gift of Ed Millis, Dallas Texas.
  2018.07.14 - KE_Standard - Added[Replaced] 4056 Favorite sn818452 [S053] gift of Ed Millis, 4056 Favorite sn563371 black Cursor, gift of Pamela Eaton. 4081-3 Decitrig sn 703557, belonged to Robert N. Curry.
  2018.07.14 - BrandIndex - Added missing reference links.
  2018.07.14 - MiscUSA - Added[Replaced] 2 1969 Kel-Co Trot Calculator and Kel-Co Class calculator[S337] for Thoroughbred race horses. Gifts of Phil Stanley. Added expanded information on A. Kelsey Company.
  2018.07.13 - Blundell - Added Platts Bros. Textile Hank Calculator with Instructions. Blundell Slideograph. Gift of Phil Stanley
  2018.07.13 - MiscUSA - Added Gisholt Time Computer (plastic film construction) and Gisholt Logo. Gift of Phil Stanley
  2018.07.13 - British - Added brand catagory and refrigerant slide rule for Imperial Chemical Industries (ICI). Gift of Phil Stanley
  2018.07.13 - Acumath - Added Festus Model 50 c1938, predecessor to Acurule 50. Gift of Phil Stanley
  2018.07.13 - Relay/Ricoh - Added Compass 1020 Made In USA byBruning. Added Compass Logo to brand header. Gift of Phil Stanley
  2018.07.13 - Eastern Europe - Added[Replaced] UGK RGPG Pocket Duplex [P218]. Gift of Phil Stanley
  2018.07.13 - Germany - Added[Replaced] Dr. Ing Seehase Promo Slide Rule [P105]. Gift of Phil Stanley
  2018.07.13 - Hemmi - Added Hughes-Owens 1762 Made in Occupied Japan. Gift of Phil Stanley
  2018.07.13 - MiscJapan - Added Royal MYCOM Refrigerant Compressor Pressure and Conversion. For R12, R22 and NH₃ refrigerants. Gift of Phil Stanley
  2018.07.13 - Faber - Added A.W. Faber refrigerant vapor pressure convertor for Bitzler F22, F12 and CH₃CL refrigerants. Gift of Phil Stanley
  2018.07.13 - K&E Standard - Added [Replaced] K&E 4035 8 inch Mannheim Lot 34 [REF]. Gift of Phil Stanley
  2018.07.12 - British - Added [Replaced] Simplon BiLateral Log Log [S107]. Gift of Phil Stanley
  2018.07.12 - MiscJapan - Added new brand Taisho Kogyo No. 202 combined slide rule and protractor. Gift of Phil Stanley
  2018.07.12 - Hemmi - Added Geotec 341-3690 Versalog II. Gift of Phil Stanley
  2018.07.11 - Pickett - Added[Replaced] Pickett & Eckel Model 2 DeciLog [S444], Magnesium stock, 1st version. Original retail box. Gift of Phil Stanley.
  2018.07.11 - Orient/East Asia - Added[Replaced] Flying Fish 1200 Duplex Log Log. [P261] Gift of Leroy Hausler Collection.
  2018.07.11 - SR_WhosWho - Added Philip (Phil) E. Stanley. Long time Oughtred Society member, collector, and contributor to ISRM. Best known as an appraser on the PBS series Antique Road Show.
  2018.07.11 - Received gifts of 18 slide rules/slide chart from the collection of Phil Stanley of The Analytical Engine, Worcester, Massachussets.
  • 18.07.11.01 - Taisho Kogyo No. 202 combined slide rule and protractor. to Misc Japan gallery
  • 18.07.11.02/M390 - Geotec (Sun Hemmi) 341-3690_Versalog II. with Instructions. Olive plastic sleeve. To Hemmi gallery.
  • 18.07.11.03/M389 - Simplon Bilateral Log Log Slide Rule with Instructions (need ironed). Brown case. To UK gallery. Replace S107
  • 18.07.11.04 - Pickett & Eckel Model 2 - Deci Log Log Duplex sn 040480. In rubber sleeve, with retail box. To gallery. Replace S444
  • 18.07.11.05 - K&E 4035 Lot 34, 8 inch Mannheim. to K&E gallery. replace REF
  • 18.07.11.06 - Faber Refrigerant Vapor Pressure Convertor. To Faber gallery
  • 18.07.11.07 - Royal MycomCompressor Refrigerant Conversion. To Misc Japan Gallery
  • 18.07.11.08 - Reiss DDR Darmstadt Pockett. Duplicate for Fund Raiser
  • 18.07.11.09 - Hughes Owens (Hemmi) 1762 MIOJ pocket. To Hemmi gallery
  • 18.07.11.10 - Dr. Ing Seehase Promo Slide Rule. To German/DDR gallery. Replace P015
  • 18.07.11.11 - UGK RGPG_Bulgaria Pocket Duplex. To Eastern Europe Gallery
  • 18.07.11.12 - Festus Model 50 - Magnifying Cursor. c1938. To Acu-Rule Gallery
  • 18.07.11.13 - Compass 1020 (same as Bruning 2420). Made in USA. to Relay Gallery.
  • 18.07.11.14 - Gisholt Time_Computer, dula slides. To Misc USA gallery
  • 18.07.11.15 - ICI Arcton Refrigerent pressure Calculator. To UK gallery.
  • 18.07.11.16 - Platts Textile Rule, Blundell Slidograph. To slide charts box.
  • 18.07.11.17 - Kelco Class Calculator For Thoroughbred Race Horses 1969. To MiscUSA gallery
  • 18.07.11.18 - Kelco Trot Calculator For Thoroughbred Race Horses 1969. To MiscUSA gallery
  2018.07.11 - Aristo - Added Aristo 0958 320° GEODÄT, gifts of the Leroy G. Hausler family.
  2018.07.11 - Charvoz-Roos - Added Aristo Maverick Charvos 20-0195 dc1969. Repaired Charvos 0905 Shut-Commerz
  2018.07.10 - Hemmi - Added Hemmi No.22 slide rule, a gift from Giuseppe Bianchi in Italy, via Ted Hume, Texas.
  2018.07.09 - SR_Loaner - Added photos of students from University of Iowa. Dr. Cynthia Farthing PhD held a seminar titled "Uncovering the Hidden Figures: Women's Role in Mathematics and Science from World War II to Today".
  2018.07.08 - SR_Loaner - Added photos of students from Mount Vernon Middle School. ISRM received a stack of thank you notes on 3x5 cards from Kim Bjork's 8th grade class.
  2018.07.08 - Pickett - Added images of Pickett 505-ES Accuraspeed Slide Rule designed by E.G. Saenz. Contributed by Brian Sheltra.
  2018.06.29 - Ephemera - Added images from 4 movies or TV shows showing slide rules. Courtesy of Paul Holdsworth
  2018.06.29 - Ephemera - Added 3 newspaper articles showing Teledyne acuisition of Frederick Post in December 6, 1967. Courtesy of Doug Harland.
  2018.05.01.01 - Received gift of Hemmi No.22 slide rule from Giuseppe Bianchi in Italy, via Ted Hume, Texas. Replace References.
  2018.04.13 - SIC - Added S.I.C No. 250 circular slide rule belonging to Melvin Eugene Oppliger (c1941-2017). Gifted by wife, Barbara
  2018.04.13.01 - Received gift of S.I.C No. 250 circular slide rule belonging to Melvin Eugene Oppliger (c1941-2017). Gifted by wife, Barbara. Replace C35.
  2018.04.11 - Aristo - Added[Replaced] 0968 Studio, 0968 V3, 10175 CIE Electrical, Maverick Charvoz 20-0195, gifts of the Leroy G. Hausler family.
  2018.04.11 - K&E_Standard - Added K&E 4051-5 20 inch with bio of Joseph J. Graf,, Sr. Gifted by grandson. Joseph J. Graf III.
  2018.04.11 - Post - Added Versalog 1460 sn40398 dc March 1963. Gifted By James J. Pennell Collection with bio. Personal slide rule used by James J. Pennell.
  2018.04.11 - K&E_Standard - Added K&E 68-1130 Deci-Lon 5 S/N 012785 c1962-1975 Variance with serrated slide. With bio. Personal slide rule of James J. Pennell.
  2018.04.10 - Received donations from Frederick Sauter and Glenn Borland
  2018.04.07 - Faber - Added/Replaced Faber 63/82 and 63/83 pocket slide rules in retail package. Gift of Leroy G. Hausler collection.
  2018.04.06 - Received slide rule collection belonging to Leroy G. (Jerry) Hausler (?-2016) of Seneca, South Carolina. Gifted by his Family of Lakewood, Colorado. Leroy was a retired pharmacist and member of the Oughtred Society from 2006 until 2016.
  
  • 18.04.06.01 - Pickett B1 Log Log Bamboo slide rule (to Gallery, replace REF) This SR is tagged with Leroys photo
  • 18.04.06.02 - Faber Castell 2/83N Novo-Duplex Plastic Clamshell case. F.S.
  • 18.04.06.03 - Aristo 0969 Studiolog wide cursor. To gallery
  • 18.04.06.04 - Pickett & Eckle Type A-1 USAF Aerial Photo Slide Rule F.S.
  • 18.04.06.05 - K&E 4139 Cooke Radio Slide Rule sn 496740 F.S.
  • 18.04.06.06 - Post 1462H Postrig MIOJ Replace ISRM 09.01.12.117 if located, or F.S.
  • 18.04.06.07 - Faber Castell 111/87 Rietz, to gallery
  • 18.04.06.08 - Faber Castell 2/82 Biplex F.S.
  • 18.04.06.09 - Faber Castell 2/83 Novo-Duplex Replace S256
  • 18.04.06.10 - Sun Hemmi No.153 dcHS in box. F.S.
  • 18.04.06.11 - Post 1460 Versalog sn 840446 Black COS scale dcHJ in Retail Box NOS Brown leather sleeve
  • 18.04.06.12 - K&E 4160 Chemist slide rule sn18067 Replace ISRM 04.11.03.01 REF225 if located. Otherwise F.S.
  • 18.04.06.13 - Post 1460 Versalog sn 842781 Green COS scale in Retail Box NOS Brown leather sleeve
  • 18.04.06.14 - Teledyne Post 44CA-600 Versalog Green COS dcWF - Replace S081
  • 18.04.06.15 - Post 1460 Versalog sn 911333 Black COS scale dcIF Brown leather sleeve
  • 18.04.06.16 - K&E 4093-3 sn490812 Vector LogLog F.S.
  • 18.04.06.17 - K&E 4083-3 Log Log Duplex Vector sn739064 (1952-1956) F.S.
  • 18.04.06.18 - Aristo 909 MultiTrig dc563. Replace S351
  • 18.04.06.19 - K&E N-4100 Stadia sn623589. Retail Box. F.S.
  • 18.04.06.20 - K&E 4081-3 Log Log Duplex Decitrig sn433147. F.S.
  • 18.04.06.21 - K&E 4143 Stadia sn399383. Replace REF
  • 18.04.06.22/M - K&E 68-1648 4153-1 Polyphase pocket slide rule sn029897. Add to gallery.
  • 18.04.06.23 - K&E N4081-3 Log Log Duplex Decitrig sn466804. F.S.
  • 18.04.06.24 - K&E 68-1100 Decilon sn215350. F.S.
  • 18.04.06.25 - K&E 68-1100 V1 Decilon sn236836. F.S.
  • 18.04.06.26 - K&E 4080-3 Log Log Duplex Trig sn885524. F.S.
  • 18.04.06.27 - K&E 4181-3 Log Log Duplex Decitrig sn425127. plastic stock. F.S.
  • 18.04.06.28 - K&E N4041-3 sn640251. F.S.
  • 18.04.06.29 - K&E 4088-3 sn253168 Polyphase. F.S
  • 18.04.06.30 - K&E 4071-3 sn014420 Decitrig. Replace S304
  • 18.04.06.31 - K&E 4055 Favorite sn833111 all glass cursor. Add to gallery.
  • 18.04.06.32 - Post 1461 Electronic (rebranded Hemmi 153) Duplex 1936, Rare version. F.S.
  • 18.04.06.33 - Teledydne Post No.1422 Hemmi P262. Add to Post Gallery
  • 18.04.06.34 - Hemmi P281 dcUL. F.S.
  • 18.04.06.35 - Flying Fish 1017. Replace REF
  • 18.04.06.36 - Faber Castell 1/87A System Rietz Addiator with stylus. F,S.
  • 18.04.06.37 - K&E 4080-5 20" Log Log Doplex Trig sn896492. Newer scale set. Add to Gallery.
  • 18.04.06.38 - K&E N4053-5 20" Polyphase sn687538. F.S.
  • 18.04.06.39 - K&E N4053-3 Polyphase sn373358. cursor has side hairline. F.S.
  • 18.04.06.40 - K&E 4053-3 Polyphase Lot315.All glass cursor. Side K scale. with box. Belonged to James. W. Houdshel 1892-1962 Pennsylvania.
  • 18.04.06.41 - K&E 4139 Cook Radio Rule. sn452225. Laminated edges. new version. To Gallery.
  • 18.04.06.42 - K&E 4070-3 Duplex Trig sn251113 Laminated edges. Replace S010 and S303.
  • 18.04.06.43 - K&E 4058C Beginners Slide Rule. wood cursor blocks. F.S..
  • 18.04.06.44 - Pickett 1000 Ortho Phase. Magnesium.ounded braces. Art work 261. reciprocal scales. Replace S179
  • 18.04.06.45 - Sun Hemmi 153 (early pre WWII) For Electrical Engineer. No model number. F.S.
  • 18.04.06.46 - Post 1460 Versalog dcBD Black COS. Copyright 1951. 1st year, april 1951. Brown leather sleeve. Owned by Bill Richardson. to gallery.
  • 18.04.06.47 - Post 1460 Versalog Green COS scale dcVF 1971. Brown leather sleeve. Belonged to Jay A. Drury. F.S.
  • 18.04.06.48 - Post No. 1447 (Hemmi) Made in Occupied Japan. Black hard case. No post Logo. Replace S452
  • 18.04.06.49 - Post No. 1447 (Hemmi) dc??. Red/white cardboard sleeve. to loaners.
  • 18.04.06.50 - Post 1461 Pocket Rule (Hemmi) dcH1 1957. Black COS. No A scale. Single Logo. Pocket clip sleeve. F.S.
  • 18.04.06.51 - Post 1441 Pocket Rule (Hemmi) with Magnifier. dcOB 1964.Pocket Clip sleeve. Replace P147.
  • 18.04.06.52 - SIC 1520.Multiphase DecaTrig sn30591 Copyright 1961. F.S.
  • 18.04.06.53 - Dennert & Pape 21 1901 Electro RR track scales. DRP126499 patent. To Gallery
  • 18.04.06.54 - Post 1450 Versatrig.(Hemmi) Black leather sleeve. F.S.
  • 18.04.06.55 - Post 1457 Mannheim-Trig Made in USA (Roos). Metal braces. Red Box. Add to gallery
  • 18.04.06.56 - Post 1442 Dual 5/10 Pocket slide rule. USA (Roos) Plastic braces. F.S.
  • 18.04.06.57 - Post 1444K dcKL (Hemmi). Pocket clip sleeve. Red Box. F.S..
  • 18.04.06.58 - Post 1461 Pocket Rule (Hemmi) dcHL 1957. Black COS. No A scale. Single Logo. Pocket clip sleeve. F.S.
  • 18.04.06.59 - Post 1460 Versalog dcGE Black COS. Brown leather sleeve. Owned by Keith R. Sherer. Red retail box. Perfect! F.S.
  • 18.04.06.60 - K&E 68-1892 K-12 Prep Transparent Green sleeve.F.S.
  • 18.04.06.61 - Lawrence Copper Wire Selector - Replace Voltage Drop REF.
  • 18.04.06.62 - U.S. Military 75mm Howitzer M24 Graphical Firing Tables (2 slide rules in khaki pouch. to Gallery.
  • 18.04.06.63 - Pickett N1010SL-ES Super Powertrig.in Retail Box. Replace S539
  • 18.04.06.64/M - Pickett N1010SL-T Super Powertrig.in Retail Box. New addition to Gallery
  • 18.04.06.65 - Pickett N1010SL-T Super Powertrig.in Retail Box. F.S.
  • 18.04.06.66 - Pickett N1010SL-ES Super Powertrig.in Retail Box. F.S.
  • 18.04.06.67 - Pickett N-500-ES HI Log Log in retail box.Curved braces. Modern Logo. F.S.
  • 18.04.06.68 - Pickett N803-ES Dual Base Log Log. Suede sleeve with loop. retail box. F.S.
  • 18.04.06.69 - Pickett N1010SL-ES Super Powertrig.in Retail Box. F.S.
  • 18.04.06.70 - Pickett N1010-T Trig Round Black Logo. NOS retail box. with manual. Black sleeve. F.S.
  • 18.04.06.71 - Pickett N400-ES Business Rule NOS in retail box. Replace REF from Greg Scott.
  • 18.04.06.72 - Pickett N4-PT Pocket Vector Log Log. NOS in Retail Box. Replace Archive REF
  • 18.04.06.73 - Pickett N600-ES Dual Base Log LOf. Modern Logo. NOS in Retail Box. F.S.
  • 18.04.06.74 - Pickett Model 700 USAF Type A-1 Aerial Photo Pocket slide rule. Sq braces. Triangle Logo. Retail Box. New Addition to gallery
  • 18.04.06.75 - Aristo 915E Elektro NOS retail box. with insert. F.S.
  • 18.04.06.76 - Pickett Model 2-T Deci Log Log sn015655. Retail Box. solid black inverse labels. Replace S444.
  • 18.04.06.77 - Pickett 200-T Pocket Trig. Bethlehem Steel Promo. Rnd Blk Logo. Curved braces. New Addition to gallery.
  • 18.04.06.78 - Pickett 200-T Pocket Trig. Western Electric Promo. 1967-68 M.I.T. Sloan Fellowship. Retail box. Modern Logo. Curved braces. Replace P076.
  • 18.04.06.79 - Casio fx-250n Scientific Calculator LCD
  • 18.04.06.80 - Pickett Model No.600 copyright 1949. Triangle Logo. Round braces. Magnesium. Add to gallery.
  • 18.04.06.81 - Pickett N-500-ES HI Log Log in retail box.Curved braces. Modern Logo. F.S.
  • 18.04.06.82 - Faber Castell 1/98 Elektro Later Model scales. Hard plastic clear/green case Electro label. New addition for gallery.
  • 18.04.06.83 - Pickett Model 14 U.S. Military Artillery Ranging slide rule. c1959. brown leather sleeve. New add
  • 18.04.06.84 - Pickett 520 Type A-1 Aerial Slide Rule. Magnesium. sn06A4626 Triangle Logo. Round braces. Replace KRING REF.
  • 18.04.06.85 - Pickett N4-ES Vector Log Log. Rnd Blk Logo. Belonged to Elmer J. Ryn (on flap). F.S.
  • 18.04.06.86 - Pickett N4-ES Vector Log Log. Modern Logo. F.S.
  • 18.04.06.87 - Pickett 6-T Statistical Quality Control. Triangle Logo. New addidtion to gallery.
  • 18.04.06.88 - Pickett N3P-ES Pocket Power Log Exponential Modern Logo. Black Pocket Clip sleeve. F.S.
  • 18.04.06.89 - Pickett N3-T Power Log Exponential. Modern Logo. Replace S129
  • 18.04.06.90 - Pickett N3-ES Power Log Exponential. Modern Logo. F.S.
  • 18.04.06.91 - Pickett 3-T Dual BaseLog Log Reciprocal Scale. Cast braces/cursor blocks. Triangle Logo. New addition to gallery.
  • 18.04.06.92 - Pickett N1010-ES Trig.nd Blk Logo. Suede sleeve. F.S.
  • 18.04.06.93 - Pickett N531-ES CREI Capitol Radio Engineering Institute F.S.
  • 18.04.06.94 - Pickett N-515-T Cleveland Institute of Electronics. Modern Logo. F.S.
  • 18.04.06.95 - Pickett N803-ES Log Log Speed Rule. Round Logo. Curved Braces. Belonged to Noel Evan while in school. New addition to gallery.
  • 18.04.06.96 - Pickett 800-ES Log Log Round Black Logo. Curved Praces. Belonged to Leroy G. Hausler (written on flap). This was the collector's personal slide rule. New addition to Gallery.
  • 18.04.06.97 - Pickett N1010-T Trig left arrow inverse scales Square Braces.Round blk logo. Replace S180.
  • 18.04.06.98 - Pickett N902-T Simplex Trig curved braces, Modern logo. F.S.
  • 18.04.06.99 - Pickett N903-T Trig and conversion.curved braces, rnd blk logo.New Addition to gallery (replace amber cursor)
  • 18.04.06.100 - Pickett 120 Trainer F.S.
  • 18.04.06.101 - Pickett 120 Narrow stock. F.S
  • 18.04.06.102 - Gilson Midget
  • 18.04.06.103 - Sama & Etani Model 200. circular slide rule with tables. Electronics.Ford Philco promo. New addition to Gallery.
  • 18.04.06.104 - Concise No.28 F.S.
  • 18.04.06.105 - Dietzgen 1734 Decimal Trig Log Log Microglide sn002001 NOS Retail package with manuals F.S.
  • 18.04.06.106 - Dietzgen 1734 Decimal Trig Log Log Microglide sn078556 Yellow box F.S.
  • 18.04.06.107 - Dietzgen 1738 Style-M Decimal Trig Log Log Multiphase Yellow box F.S.
  • 18.04.06.108 - Dietzgen 1734 Decimal Trig Log Log Microglide sn045920 Yellow box. F.S.
  • 18.04.06.109 - Dietzgen 1735 vector Log Log Microglide sn103948 Yellow box Replace S508
  • 18.04.06.110 - Dietzgen 1776 Redirule Pocket Duplex in Retail Box F.S
  • 18.04.06.111 - K&E 4181-1 LogLOg Decitrig pocket duplex. sn 013418. Owned by Robert Zito. F.S.
  • 18.04.06.112 - Faber Castell 67/87 Rietz pocket, Green case. dc263. F.S.
  • 18.04.06.113 - Faber-Castell 63/82 Biplex. Retail Box. Replaced C030 done
  • 18.04.06.114 - Faber-Castell 63/83 Biplex. Retail Box. REplaced C031 done
  • 18.04.06.115/M380 - Flying Fish 1200 Log Log Pocket duplex. Orange sleeve. Replace P261
  • 18.04.06.116/M393 - Otis King Model K Cylindrical Slide Rule. snR1903. New addition to gallery.
  • 18.04.06.117 - Aristo 867U Pocket slide rule. Marked Dennert&Pape on rear.No date code. 1st addition. Add to gallery
  • 18.04.06.118 - Aristo 868 Studio pocket.duplex. dc6502. Prom:Sergio Vargas Basurto. F.C.
  • 18.04.06.119 - Aristo 870 Multilog pocket.duplex. dc21A12. Brown sleeve F.C
  • 18.04.06.120 - Aristo 89 Rietx (USA market) Inch scale. dcG5514. Mackenzie Promo. Add to Gallery
  • 18.04.06.121 - Aristo nr.810, 4 inch pocket rule. No cursor. Modern Blueprint promo. New Addition to gallery.
  • 18.04.06.122 - Faber-Castell 163/81 Novo Mentor Duplex. Replace P108.
  • 18.04.06.123 - Nestler Multimath-Duplex Nr.0130 with insert. Replace P130.
  • 18.04.06.124 - Nestler No. 21 Darmstadt RR track scales. Replace ISRM 11.11.17.01 (better specimen)
  • 18.04.06.125 - Aristo (Charvoz) 0970 Multilog. dc 652.(1965) Metal cursor variation. owner Joe Vespucci. To gallery
  • 18.04.06.126 - Aristo (Charvoz) 0970 Multilog. dc 624.(1962) Plastic cursor variation. owner Kathy Monaco. F.S.
  • 18.04.06.127 - Geotec 341-3012 VersalogII (Hemmi) dcWF. Same as Post Versalog II with A scale. Owner: Wisniewski. Replace REF from Ron Kuc.
  • 18.04.06.128 - Graphoplex 1600 Mannheim Trig. Retail Box. Replace S255
  • 18.04.06.129 - Dietzgen N1725 Microglide Vector Type Log Log sn014139. Light brown leather sleeve. F.S.
  • 18.04.06.130 - Sun Hemmi 250 Trig Duplex dcMH . Owner: Jane Warner. New addition to gallery.
  • 18.04.06.131 - British Thornton No.P271 Log Log. Dark grey plastic case. F.S.
  • 18.04.06.132 - Reiss 3214 Darmstadt Record. Replace REF from Marion Moon.
  • 18.04.06.133 - Aristo 0968 V2B Studio. dc6136 Replace REF
  • 18.04.06.134 - Aristo 0958 Geodat 360deg. dc641. New addition to gallery.
  • 18.04.06.135 - Aristo 0968 V3 Studio. dc2LST6. Replace S210
  • 18.04.06.136 - Aristo 0970 Multilog. dc2FL12. F.S.
  • 18.04.06.137 - Aristo 0903 Scholar dc 3LT. To School loaner program
  • 18.04.06.138 - Aristo Maverick Charvoz 20-0195. dc3FX20. New addition to gallery.
  • 18.04.06.139 - Aristo Electronic Nr. 10175 Cleveland Institute of Electronics. Replace REF.
  • 18.04.06.140 - Faber-Castell 52/82 D-Stab Student Biplex. No model name. Early scale set. Add to gallery.
  • 18.04.06.141 - Bruning 2401 5" Rule. Promo slide rule. International Conveyor & Washer Corp. Detroit, Jack Mossman.
  • 18.04.06.142 - Reiss 3212 Mannheim. New Addition for Gallery.
  • 18.04.06.143 - Fesenthal & Sons. Dead Reckoning Computer. AN5835-1. New addition to gallery.
  • 18.04.06.144 - Engineering Instruments (10-B) F.S.
  • 18.04.06.145 - Infilco Chemical Calculator for Water Treatment. Copyright 1946. Graphic Calculator Co., Chicago.
  • 18.04.06.146 - GUCO No.1004 Date Finder Circular. Edgewater Automation Promo. To gallery
  • 18.04.06.147 - GUCO No.139 Generic Slide Rule. BCS Promo. To gallery
  • Journal of the Oughtred Society (JOS), 21 issues 2006-2015
  • Slide Rules, Their History and Makers by Peter M. Hopp
  • Slide Rules, A Journey through three centuries by Dieter von Jezerski
  • K&E Salisbury Products Division Slide Rules by Joseph L.Soper
  • The Slide Rule Technical Cultural Heritage by Ir. IJzebrand Schuitema
  • The Slide Rule and How to Use it. 1942 Sommers with Lawrence Slide Rule.
  • The Slide Rule and How to Use it. 1958 Sommers
  • Hughes-Owens Catalog, slide rules 1967
  • K&E Catalog Slide Rules 1962
  • K&E Drafting Catalog 1949
  • Dietzgen Price List 1943
  2018.04.05 - Concise - Added Sama&Etani 600-T Reference Tables. Donated By Dorinda Wong
  2018.03.30 - Received donation from Richard Burns.
  2018.03.20 - Received gift of a slide rule collection used by Robert N. Curry (192?-20??) in his education and career. Gifted by his friend Alice Bowling of Louisville, Kentucky. Included in the collection is his 1981 book: Fundementals of Natural Gas Conditioning
  
  • REF Library - Fundementals of Natural Gas Conditioning by R.N. Curry, Pennwell Publishing, © 1981
  • 18.03.20.01 - K&E 4081-3 Log Log Duplex Decitrig sn703557. Mahagony edge. Personal slide rule used by Robert N.(Bob) Curry at Western Kentucky Univ. from 1947-49. Same as gallery specimen ISRM 13.08.27.01
  • 18.03.20.02 - Pickett N-515-T Cleveland Institute of Electronics.Round Black Logo. F.S.
  • 18.03.20.03/M413 - Pickett Fisher Governor Company. Control Valve Sizing Rule. Copyright 1954. Triangle Logo. Round Braces. Metal cursor blocks. with supplement inserts. Replace S249
  • 18.03.20.04/M414 - Pickett N1041-G Fisher Governor Company. Control Valve Sizing Rule. Copyright 1967. Triangle Logo. Curved Braces. Plastic cursor blocks. Replace S089.
  • 18.03.20.05 - B.F. Grizzle Gas Pipe Line Slide Rule. 2 K&E Cursors. Replace Slide rule in Lawrence gallery.
  • 18.03.20.06 - Post 1444-D Commerce pocket slide rule. Made in USA. 1941-1945. Stock repaired with errors. to Gallery
  • 18.03.20.07 - Foxboro Meter Calculations. excess F.S.
  • 18.03.20.08 - TT Meter and Valve Size Calculator
  • 18.03.20.09 - American Gas Journal, Low Pressure Gas Flow Computer.1935
  • 18.03.20.10 - American Gas Journal, High Pressure Gas Flow Computer.1935
  • 18.03.20.11 - W.K.M. Controls Valve Sizing Calculator
  • 18.03.20.12 - Sterling No. 587 Pocket. Estor Promo F.S.
  • 18.03.20.13 - Rockwell Turbo-Meter Slide Rule
  • 18.03.20.14/M387 - Hutchinson Calculator No.2 Gas And Air Flows.
  2018.03.01 - Received gift of slide rules belonging to Dean Keith Edmonds Jr. by his son Robert Edmonds of Broomfield, Colorado.
  
  • 18.03.01.01 - Post Versalog 1460 dcFF Black COS. User's initials, DKE, on stock. Case has name in window.
  • 18.03.01.02 - K&E 4181-1 pocket Decitrig Log Log sn324460. Green leather sleeve.
  • Useful tables for Engineers and steam users. Babcock and Wilcox
  2018.02.21 - Received donation from Wayne R Pinnow, Wisconsin
  2018.02.15.01 - Received gift of 4051-5 20" slide rule from Joseph J. Graf Jr.. Belonged to his father Joseph J. Graf Sr. a telegrapher with the Lackawann Rialroad in Scranton, PA. With bio and picture. Add to Gallery
  2018.01.18.01 - Received gift of Radio Shack EC-245 Statesman Thin Slide Rule Calculator with charger from Dr. Christopher Fink, Ph.D. of Fredericksburg, Virginia.
  2018.01.14 - Received donations from Giuseppe Bianchi, Italy; Jose Gabriel Fernandez, Spain; and Thomas Yorker, New York.
  2018.01.03 - Received gift of slide rules used by Dorinda Wong of Pleasanton, California.
  • 18.01.04.01 - Concise Sama Etani Sciance Table and Circular Slide Rule Model 600-ST
  • 18.01.04.02 - Pickett N904-ES Decimal Keeper Speed Rule, Round Black Logo. Replaced 13.02.20.03 in Retail Box
  • 18.01.04.03 - Pickett N600-ES Log Log Speed Rule Modern Logo. Leather sleeve with belt clip.
  • 18.01.04.04 - Pickett 160-ES plastic pocket slide rule initials KW. F.S.
  2018.01.02.01 - Received gift of Acumath 400 from Albert Klumpp of Arlington Heights, Illinois. For loaner program.
  2018.01.01.01 - Recieved gift of Pickett 52T Aerial Photo Slide Rule Type A-1, U.S. Air Force. Astrodyne Inc.. Made in Mexico. belonging to Howard Nelson of Goshen, New York. Gifted by Mark Mazzella of Schoharie, New York. To gallery
  2018

  ---

  2017.12.30 - Received donation from Mary J. Levasseur, Brenda Barnes. Now a Friends of the Museum.
  2017.12.17 - Received gift of a slide rules from the James J. Pennell Collection from his daughter,Brenda Barnes, and son, Barry Pennell of Apex, North Carolina. James J. Pennell (Jim) was born in Wilkes County, North Carolina June 9, 1927 and died in November 2015. He was an electronics technician caring for the instrument landing system of Raleigh Durham Airport (RDU) for decades after serving in the Navy and Air Force. He used and collected slide rules consistently throughout his life acquiring them from friends and at yard sales. It is an honor to donate his collection to the Slide Rule Museum.
  
  • 17.12.17.01 - Versalog 1460 dcNC snGreen COS Labeled as Personal slide rule of James J. Pennell to Gallery. Replace ISRM 12.06.24.22
  • 17.12.17.02 - Jason 802 dc HS-1 Brown Leather Sleeve, marked Barbara Benjamin, F.S.
  • 17.12.17.03 - Hemmi P23 8" . Name on box Janice Lingle. New variatoion to gallery
  • 17.12.17.04 - K&E N4053-5 Polyphase 20" sn694397 with leather sleeve and box. Duplicate F.S.
  • 17.12.17.05 - K&E Decilon 10 68-1100 sn238737 Variant No Markings. F.S.
  • 17.12.17.06 - K&E Decilon 10 68-1130 sn012785 Variant Red/blk serrations on slide. Marked Pennell on sleeve Personal slide rule To gallery. New addition
  • 17.12.17.07 - Acumath 1240 Red slide, black sleeve, to Gallery
  • 17.12.17.08 - Thornton P.I.C. P221 Log Log to Gallery. Same as P.I.C. 221, S041
  • 17.12.17.09 - C-119/R4Q Flying Boxcar Model E956B Load Adjuster slide rule. Cox & Stevens Aircraft Company. To gallery.
  • 17.12.17.10 - Aristo 0970 Charvoz Multilog. Brown Leather sleeve. Marked Jim Belcher. F.S.
  • 17.12.17.11 - Aristo 0903 Charvoz Scholar.dcG5725 Variant Grey Cardboard sleeve. To Gallery.
  • 17.12.17.12 - K&E 4181-1 Log Log Duplex Decitrig S/N 117350 No sleeve. F.S.
  • 17.12.17.13 - Post 1441 4" slide rule. Retail box. Add to gallery
  • 2 Acumath 400. to Loaner program
  • 17.12.17.14 - 1x5x13 Abaci H.Y.T.C. Plastic Tiawan
  • 17.12.17.15 - 1x4x13 Soraban (Abaci) Japan
  • 17.12.17.16 - 1x5x21 Soraban (Abaci) Japan
  • 17.12.17.17 - Desk Paper weight Abaci
  • 17.12.17.18 - Pickett 140-ES Black sleeve. F.S
  • 17.12.17.19 - Pickett 902-ES retail Package F.S.
  • 17.12.17.20 - Pickett 902 Simplex Trig, corroded stock and slide. replace S175
  • 17.12.17.21 - K&E N4058W Beginners Slide Rule K scale with metal frame
  • 17.12.17.22 - Sterling No.587 Slide Rule F.S.
  2017.12.18 - Received donation from Brenda Barnes in memory of James J. Pennell.
  2017.10.13 - Circular - Added Fearns A7 Universal Metric Converter, Donated By Barbara Cunningham, Australia, belonged to Brian Charles Cunningham
  2017.10.13 - SR_Library/Japan - Added Hemmin 257 Chemical Engineering slide rule Brief Instructions.
  2017.10.13 - Concise - Added(Replaced) Concise Type-E Weights and Measures Conversion Tables Data Computer, belonged to Brian Charles Cunningham
  2017.10.13 - Dietzgen - Added(Replaced) Dietzgen 1771 Redi-Rule Promo (P043), belonged to Brian Charles Cunningham
  2017.10.13 - SR_Terms/encyclopedia - Expanded W.H. Harling info.
  2017.10.12 - Faber - Added Faber Castell 1/87 Rietz, no scale labels, belonged to Brian Charles Cunningham
  2017.10.11 - Concise - Added(Replaced) Concise No.32 Key chain with Perpetual Calender(C07). Ed Millis Collection
  2017.10.11 - Scanned the Brian Charles Cunningham collection.
  2017.10.10 - Received gift of slide rules from Barbara Cunningham, belonged to Brian Charles Cunningham (1935-2013), Willagee, W.A., Australia. Their son Andrew Inherited them but wished to donate his Dad's collection to ISRM.
  
  • 17.10.10.01/M384 - Hemmi 257 for Chemical Engineer with Manual
  • 17.10.10.02/M381 - Dietzgen 1771 Redi-Rule in Retail box, with manual to gallery
  • 17.10.10.03/M383 - Concise Type-E Weights and Measure Conversion Tables with manuals to gallery
  • 17.10.10.04/M386 - Fearns Universal Metric Converter circular slide rule to gallery
  • 17.10.10.05 - Relay No. 403 pocket slide rule, missing cursor
  • 17.10.10.06 - Faber Castell 1/87 Rietz, no scale labels, plastic cursor. To gallery
  2017.10.01 - SR_Dates - Updated Pickett Timeline with contributions by Douglas Harland
  2017.10.01 - Ephemera - Added scans of Arizona newspaper articles about Pickett in Nogales. Contributed by Douglas Harland
  2017.10.01 - Pickett - Added scans of Arizona newspaper articles about Pickett in Nogales. Contributed by Douglas Harland
  2017.09.30 - SR_BrandIndex - Added T & T Electric Manufacturing.
  2017.09.30 - SR_Library/USA - Added T & T Electric Fast Calculator Instructions, gift of Michelle Black, belonged to father John Black, Morro Bay, California, and an archive image of a specimen from the Sphere Research.
  2017.09.30 - MiscUSA - Added T & T Electric Fast Calculator, gift of Michelle Black, belonged to father John Black, Morro Bay, California
  2017.09.30 - SR_Library/Pickett - Added N-16-ES Chan Street Electronic Manual. Gifted by Polly Hattemer, Redondo Beach, California
  2017.09.30 - Pickett - Added(Replaced) Chan Street N-16-ES Electronic (S354) and N803-ES LogLog. Gifted by Polly Hattemer, Redondo Beach, California
  2017.09.30 - Friends - Added Michelle Black and Polly Hattemer to Friends of the Museum
  2017.09.25 - Library - Received Fall 2017 Journal of the Oughtred Society
  2017.09.15 - Received gift of slide rules and slide charts from Polly Hattemer of Redondo Beach, California
  
  • 17.09.15.01/M379 - Pickett N-16-ES Electronic Duplex Electronic in Brown leather sleeve with belt loop with Manual
  • 17.09.15.02 - Pickett N1010-ES Trig Curved braces Round Black Logo in brown suede sleeve. to fund raiser
  • 17.09.15.03 - Pickett N-515-T Electronic Duplex Electronic in Brown leather sleeve CIE Logo - To fundraiser
  • 17.09.15.04 - Pickett N803-ES LogLog Curved braces Round Black Logo in black sleeve with belt loop. to gallery
  2017.09.14 - Received gift of slide rules and slide charts from Michelle Black, belonged to father John Black, Morro Bay, California
  
  • 17.09.14.01/M378 - T. and T. Electric Fast Calculator. to gallery
  • 17.09.14.02 - Concrete Volume Calculator, no mfg markings to gallery
  • 17.09.14.03 - McGraw-Edison Motor Protection Guide Slide Chart to slide chart archive
  • 17.09.14.04 - Greenlee (Conduit and Pipes) Bending Calculator to slide chart archive
  2017.09.12 - Arospace and Military - Eyes of Artillery: The Origins of Modern U.S. Army Aviation in World War II (76MB PDF) by Edgar F. Raines, Jr., R.F. Cassidy, Lt. Col (Later Major) is mentioned throughout the text.
  2017.09.12 - Aerospace and Military - Added Fesenthal Dalton Dead Reckoning Computer origalally used by Lt. Col. R.F. Cassidy during WWII in the war in the Pacific
  2017.09.12 - Aerospace - Added Stanley manufactured Dalton Dead Reckoning Computer Commercial stainless version (1959). Gift of Ed Millis.
  2017.09.11 - SR_Loaner - Sent 20 Post 1447 Mannheims to Dr. Cynthia Farthing, University of Iowa. Included K&E4081-3 and Gilson Binary
  2017.09.11 - SR_Loaner - Sent 13 Pickett 140 LogLog to Laurie Emery, South Winneshiek Community School.
  2017.09.10 - Aerospace - Added Weems manufactured Dalton Dead Reckoning Computer Commercial plastiv version (1959). Gift of Ed Millis.
  2017.09.10 - Misc_USA - Updated Gilbert Small, SMALL Calculator with more views.
  2017.09.10 - SR_Library/MiscUSA Added ISRM_M377_Globemaster_No62205_Japan_Instructions_GiftOfEdMillis
  2017.09.10 - Misc_USA - Added Globemaster No. 62205 10 inch slide rule, along with logos and company background. Updated
  2017.09.09 - Received donation from Michael Vinarcik.
  2017.09.09 - Lawrence - added rare 10-B with magnifyiong cursor and 8-B artwork on the back
  2017.09.09 - Faber - Added A.W. Faber Castell 1/60 Mannheim date code June 1940
  2017.09.09 - Post - Added(replaced) 1450 Versatrig for dcTD1953. Donated by neighbor of Kevin Owen in Denver. (S075)
  2017.09.07 - Hemmi - Added 251 MIOJ Cursor, for Mechanical Engineer dcDC1953
  2017.09.07 - Misc_USA - Bruning 2401 Pocket Slide Rule Texas Instruments Promo. Gift Of Ed Millis, Dallas Texas
  2017.09.07 - K&E Standard - Added ECCO 10000 Copy1946 (same as K&E 9068 Doric) Pocket Duplex Slide Rule . Gift Of Ed Millis
  2017.09.06 - Scanned and edited 20 slide rules, mostly K&E
  2017.09.04 - Aristo - Added Aristo 0903LL Scholar dcG5925 (1959) Variant. Gift Of Pam Eaton of Dennis, Massachusettes
  2017.09.04 - Acumath - Added(replaced) numerous models slide rules to the gallery.
  
  • Acu-Math_1211_PocketDuplex_GiftOfBobSchwartz.jpg (P229)
  • Acu-Math_No500_SerratedBraces_OneSidedCursor_GiftOBobSchwartz.jpg
  • Acu-Math_No400_PlainEdgeStock_OneSidedCursor_GiftOfWilliamMulroy.jpg
  2017.09.03 - Pickett - Added(replaced) numerous models slide rules to the gallery.
  
  • Pickett_N1010-T_Trig_RedBlkTxt_RndBlkLogo_GiftOfBobSchwartz.jpg
  • Pickett_N902-ES_V2_SimplexTrig_RndBlkLogo_GiftOfBobSchwartz.jpg
  • Pickett_903-T_TrigConversion_TriangleLogo_RoundedBraces_EdMillisCollection.jpg
  • Pickett_N3-ES_Mislabled_N3-T_RndBlkLogo_c1959_GiftOfEdMillis.jpg
  • Pickett_N3-T_PowerLogExponential_RndBlkLogo_c1959_GiftOfEdMillis.jpg
  • Pickett_Model_120_Trainer_GreyBraces_Version2_GiftOfEdMillis.jpg
  • Pickett_N531-ES_CREI_Mexico_GiftOfEdMillis.jpg
  • Pickett_800-T_LogLog_RedBlkTxt_RndBlkLogo_GiftOfDavidBarnishim.jpg (S066)
  • Pickett_800-T_RoundedBraces_Version2_GiftOfBobSchwartz.jpg
  • Pickett_901-T_Simplex_RndBlkLogo_CurvedBraces_DustinEMorrisCollection_GiftOfNancyMorris.jpg
  • Pickett_N800-ES_ModernLogo_DustinEMorrisCollection_GiftOfNancyMorris.jpg
  • Pickett_Model_600_SqBr_TrianglrLogoDustinEMorrisCollection_GiftOfNancyMorris.jpg (P093)
  • Pickett_N4-ES_SqBr_RndBlkLogo_DustinEMorrisCollection_GiftOfNancyMorris.jpg
  2017.09.02 - Library/Pickett added M375 How to Use The Deci-LogLog Slide Rule (Model 2). and M376 Care Sheet. Gift Of Steve Stewart
  2017.09.01 - Pickett - Added(replaced) numerous models slide rules to the gallery.
  
  • Pickett_Model_2_snC026739_Magnesium_V2_GiftOfSteveStewartBelongedToFatherRLStewart.jpg (S052)
  • Pickett_106C_ProportionalIndicator_GiftOfEdMillis.jpg
  • Pickett_121_TrainerConversion_NarrowStock_GiftOfEdMillis.jpg (S317)
  • Pickett_No800_sn11H1641MagnesiumStock_GiftOfEdMillis.jpg (S220)
  • Pickett_N300-T_ModernLogo_BlkTxt_HookedBraces_DustinEMorrisCollection_GiftOfNancyMorris.jpg
  • Pickett_125-T_Simplex_Microline_WideStock_ModernLogo_DustinEMorrisCollection_GiftOfNancyMorris.jpg
  • Pickett_140-ES_LogLog_Version1_Microline_WideStock_ModernLogo_DustinEMorrisCollection_GiftOfNancyMorris.jpg (S219)
  • Pickett_140-T_LogLog_Version1_Microline_WideStock_ModernLogo_EdMillisCollection.jpg (S048)
  • Pickett_140-T_LogLog_Version2_MadeInMexico_GiftOfOughtredSociety.jpg
  2017.09.01 - MiscJapan - Added HOPE No.52 Manheim slide rule. Gift of Phillip Rodley of Upperhutt, New Zealand.
  2017.09.01 - Received donation from Jan Schoubo of Germany, now a Friend of the Museum.
  2017.08.31 - Introduction - Added video of ISRM slide rule scanning process
  2017.08.31 - Ephemera - Added Dustin E. Morris Photo of him as a young boy holding his father's slide rule.
  2017.08.30 - Hemmi - Added(Replaced) Hemmi 200 16"[400mm] Ultra Accuracy Gift Of Ed Millis, Texas.
  2017.08.30 - Post - Added Teledyne Post 1410 (Hemmi P281) dcUC (March 1970. Gift Of Ed Millis
  2017.08.30 - KE_Standard - Added Version 1 Decilon 10, no ridges or model number, sn263644. Gift Of Nancy Morris
  2017.08.30 - KE_Standard - Added(Replaced) 68-1251 S/N 132850 (S077) decitrig. Gift Of Nancy Morris
  2017.08.30 - Misc_USA/Fullerton - Added Fullerton 1450 Version3 (Concise28) Dustin E. Morris Collection. Gift Of Nancy Morris
  2017.08.30 - Ricoh/Sans-Steiffe - Added Sans-Steiffe No311 dcILC ( Version 1)Dustin E. Morris Collection. Gift Of Nancy Morris
  2017.08.30 - Charvoz-Roos - Added(replaced) Compass SR-108 (P100 Roos) Dual Duplex.
  2017.08.30 - Ricoh/Compass - Added Compass (Gilson) 8" Binary Circular Slide Rule and Compass SR-108 (Roos) Dual Duplex.
  2017.08.30 - Misc_USA/C-Thru - Added C-thru S-888 Instructions, Dustin Morris Collection.
  2017.08.30 - Library/Misc_USA - Added C-thru S-888 Instructions, Dustin Morris Collection.
  2017.08.29 - Faber - Added A.W. Faber 367 with Decimal Keeper slide Rule, gifted by Phillip Rodley, Upper Hutt, New Zealand. Added link to Trevor Catlow's paper "Dating pre-1920 Faber-Castelle slide rules"
  2017.08.29 - Pickett - Added Pickett 800-ES Log Log slide Rule belonging to Dunstin E. Morris, with bio and photo
  2017.08.29 - Hemmi - Added Hemmi 256 Radio Communication slide Rule belonging to Dunstin E. Morris, with bio and photo
  2017.08.27 - Started scanning submitted slide rules, over 120 scans done in one day. Hundreds more to go.
  2017.08.24 - Received gift of slide rules (bio/photo) belonging to Dustin E. Morris (1939-2017) from his wife Nancy E. Morris of Tempe, Arizona. Ham call sign: W7ITM. Thank you letter sent.
  
  • 17.08.24.01/M373 - Sun Hemmi 256 - For Electric Communications dcLC (March 1953) to Gallery
  • 17.08.24.02/M374 - Sans & Streiffe No. 311 dc I.S-3 (1960) Brown Leather Sleeve to Gallery
  • 17.08.24.03/M372 - C-Thru S-888 with Instructions to Gallery clear./green plastic sleeve to Gallery
  • 17.08.24.04 - Compass (Roos) SR-108 Dual 5"/10" Pocket Duplex (Metal Braces)- c1946 to Gallery
  • 17.08.24.05 - Pickett N600-T curved braces Round Black Logo to Gallery
  • 17.08.24.06 - K&E Decilon 10 68-1100 sn263644 Variant No Markings to Gallery ( replace McCoy variant)
  • 17.08.24.07 - K&E 68-1251 Log Log Duplex Decitrig S/N 132850 c1962-1975 to Gallery
  • 17.08.24.08 - Fullerton 1450 Acudial Version 3 (Concise 28N) to Gallery
  • 17.08.24.09 - Fullerton 1450 Acudial Version 2 (Concise 28N) Yellow sleeve with Manual
  • 17.08.24.10 - Concise 28 Motorola Promo Black sleeve
  • 17.08.24.11 - Pickett Model 600 Pocket Rule square braces Triangle Logo to Gallery
  • 17.08.24.12 - Pickett Model 4-ES Log Log Vector Hyperbolic Dual Base - 1958-62 Aluminum Stock ,Square Braces, extended nylon cursor bars, flat lens. Inverse scales noted with left arrow.
  • 17.08.24.13 - Pickett Model N1010-ES curved braces Modern Logo to Gallery
  • 17.08.24.14 - Pickett Model 600 square braces Triangle Logo to Gallery
  • 17.08.24.15 - Pickett 901-T Simplex_curved braces Round Black Logo to Gallery
  • 17.08.24.16 - Pickett 125 Microline Wide Stock Modern Logo NOS Retail Box to Gallery
  • 17.08.24.17 - Pickett 140-ES Log Log Microline Wide Stock Modern Logo NOS Retail Box to Gallery
  • 17.08.24.18 - Pickett N800-ES Log Log Speed Rule 1964 Modern Logo in Retail Box. Black Sleeve to Gallery
  • 17.08.24.19 - Pickett N800-ES Log Log Speed Rule 1964 Modern Logo in Retail Box. Black Sleeve
  • 17.08.24.20 - Pickett N300-ES Log Log Pocket Rule 1964 Modern Logo in Retail Box. Brown Sleeve to Gallery
  • 17.08.24.21 - Pickett 140-ES Log Log Microline Version 1, Wide Stock Modern Logo to Gallery Replace REF S219
  • 17.08.24.22 - Pickett 120-T Basic Version 2 (italic text) Microline, Wide Stock Modern Logo NOS Retail Box to Gallery
  • 17.08.24.23 - Pickett 140-T Log Log Microline Version 2,(italic text) Microline, Wide Stock Modern Logo NOS Retail Box
  • 17.08.24.24 - Gilson Binary Slide Rule 8" Diameter, Tan Sleeve.
  • 17.08.24.25 - Post 1447 Bamboo Slide Rule, grey Plastic sleeve. dcTE.
  • 17.08.24.26 - Ohmite Resistance Calculator Slide Chart
  • 17.08.24.27 - Shure Reactance Slide Rule Slide Chart
  • 17.08.24.28 - Sterling No. 587 Pocket Slide Rule
  2017.08.23.01 - Received gift of Compass Branded Gilson 8inch Binary Slide Rule (from neighbor)
  2017.08.20 - Received gift of 12 replacement Nestler modern era slide rule cursors from the original Nestler factory stock, from Juërgen Nestler. Cursors for 0215(2),0280, 0370E(3), 0235, Rietz, 0129, 0292
  2017.08.09 - Germany - Added new catagory:Schacht & Westerich, Hamburg, Germany and 2 examples of System "Cutz" 1916 slide rules.
  2017.08.09 - Pickett - Added Pickett N-700T Type-A1 USAF Aerial Photo Slide Rule gifted by Walter Shawlee 2, British Columbia, Canada.
  2017.08.09 - Pickett - Added Pickett 52T Type-A1 USAF Aerial Photo Slide Rule gifted by Steve Wilkie, Toronto, Canada.
  2017.08.09 - Dietzgen - Updated ascession numbers and References to items gifted to the Computer History Museum
  2017.08.09 - Dietzgen - Added(Replaced) Dietzgen 1745 Mannheim (S485), Early frameless cursor, with restored lens
  2017.08.09 - Nestler - Added Nestler 23R System Reitz c1906, All-Glass Cursor
  2017.08.08 - K&E_Specialty - Added(Replaced) K&E 4139 sn936496 (S445). Gift of Ed Wright collection.
  2017.08.08 - ISRM Friends - Added Maria Sayre Cole and Rob Snider.
  2017.08.08 - K&E_Standard - Added K&E 4083-3 Duplex Vector sn395769 c1939. Gift Of Rob Snider Belonged To Father Homer D. Snider
  2017.08.08 - K&E_Standard - Added K&E 4080-3 sn352819 belonging to Clifford_L. Sayer Jr. Gift Of Marie Sayer Cole
  2017.08.08 - Dietzgen - Added Dietzgen 1759B Philips belonging to Clifford_L. Sayer Sr. Gift Of Marie Sayer Cole
  2017.08.07 - Hemmi/Hughes-Owen - Added Hughes-Owen 1768C belonging to Henri Doiron, with his college photo.. Gift of Daughter Nathalie Doiron, Canada
  2017.08.07 - MiscUSA/Gerber - Added original signed letter from H. Joseph Gerber to Graphanalogue specimen, which was a personal gift.
  2017.08.07 - SR_Library/UnitedStates - Added Gerber GraphAnalogue GA-103 manual and Gerber Variable Scale manual. Gifts of Marie Sayre Cole
  2017.08.07 - MiscUSA/Gerber - Updated Gerber GraphAnalogue GA-103 Belonged to Cliifford L.Sayre. Gift Of Marie Sayre Cole. Added manuals to both specimens.
  2017.08.07.01 - Received gift of Hughes-Owen 1768C belonging to Henri Doiron. Gift of Daughter Nathalie Doiron, Canada
  2017.08.03 - SR_Library/General - Tasco Pocket Arithmometer Instructions from Peter Turk of Canada.
  2017.08.02.- KE_Specialty - Added K&E 4095-3 Merchants Rule with Magnifying Cursor (1922-1941), originally Tom Wyman Collection.
  2017.08.02/M370 - SR_Library/Books - Received Die Nestlers Geschichte einer Lahrer Unternehmerfamilie, Gift of Jürgen Nestler.
  2017.08.01 - Italy - Added Regolo Di Convergenza (Artllery). Gift Of Nicola Marras, Italy
  2017.08.01 - K&E - Added K&E 4076 c1913 Duplex Trig, gift of Robert Otnes, California
  2017.08.01 - Hemmi - Added Hemmi P3526 Slide Rule Scan By Paul Ross
  2017.08.01 - SR_Library/MiscUSA - Added/Replaced SIC Model 1570 Professional Slide Rule Instructions. Scan provided by Ralph T. Soule.
  2017.07.27 - Dietzgen -Added[replaced] Dietzgen 8" Binary Slide Rule [C21] (Gilson) from Linda Boclair of Voohees, NJ. Belonged to Spafford W. Schanck (1899-1985).
  2017.07.27 - Faber - Added[Replaced] Faber-Castell 2/84N Mathema [Ref] Universal Slide Rule, from Phillip Rodley, Upper Hutt, New Zealand.
  2017.07.27.02/M369 - Received gift of Dietzgen 8" Binary Slide Rule (Gilson) with manual from Linda Boclair of Voohees, NJ. Belonged to Spafford W. Schanck (1899-1985).
  2017.07.27.01/M368 - Received gift of Faber-Castell 2/84N Mathema Universal Slide Rule, with manual, from Phillip Rodley, Upper Hutt, New Zealand. 2017.07.27 - People with slide rule/Ephemera - Added 7 new images, include photos from the Movie "Hidden Figures". A MUST see!
  2017.07.26 - SR Loaner Program. Added pictures of students submitted from the following schools that are using ISRM slide rule sets
  
  • Norma Tanner's class at Hawthorn Middle School, Vernon Hills, Illinois
  • Jim Hus's class at Highlands High School, Highland, Indiana
  • Laurie Emery's class at South Winneshiek Community School, Calmar, Iowa
  • Dr. William Priestley's class at Harry S. Truman High School, Levittown. Pennsylvania
  • David (Randy) Sullivan's slide rule club at University of Oregon, Uegene, Oregon
  • John Butler's class at Murrah High School, Jackson, Mississippi
  • Dr. Justin Young's class at Ashland University, Ashland, Ohio
  2017.07.26 - Nestler - Added Nestler No28 Stadia Rule Instructions (Italian) to Nestler Nr.28. Updated layout.
  2017.07.26 - SR_Library/Europe - Added Nestler No28 Stadia Rule Instructions (Italian). Updated layout.
  2017.07.25 - Search ISRM - Replaced Search Engine with one powered by Google. Very fast and concise
  2017.07.25 - SR Course - Added Teaching Aid: "Was There Life Before Computer? Calculations before We Went Digital" by Nicola Marras
  2017.07.25 - MiscUSA - Added 2 Paisley Calculator Company Model A, one Aluminum Body, the other a Bakelite Body. Images from Oughtred Society, Ebay, and National American History Museum.
  2017.07.25 - BrandIndex - Added James R. Paisley Company
  2017.07.24 - Circular - Replaced REF Gilson Atlas Calculator Patent 1-17-1922, Copyright 1931,, with physical specimen obtained at IM204. Updated layout.
  2017.07.24 - MiscUSA - Updated The Small Calculator with physical specimen. Gift ofGretchen S. Lebrun (Canada) and Jonathan Small, grand children of Gilbert Small.
  2017.07.24 - Blundell - Added Nelson-Jones Circuit Designers Slide Rule 1974 Key Electronics, made by Blundell Harling. Updated layout.
  2017.07.24 - Nestler - Added Nestler 1908 Model 23 with 1911 catalog page. Scan provided by Tom Gahl, son of original owner. Updated layout.
  2017.07.24 - KE_Standard - KE 4092 Lot3 c1915 All-Glass cursor and 4041 lot211. Belonged to R.W. Kratz, gifted by grandson Nick Kratz.
  2017.07.24 - Pocket Watch - Added Halden Calculex Patent Circular Slide Rule, Belonged to R.W. Kratz, gifted by grandson Nick Kratz.
  2017.07.24 - SR_Library/British-Australia - Added Halden Calculex circular slide rule instructions. Gift of Nick Kratz, Pasadena, California
  2017.07.23 - SR_Library/USA -Added Bruning 68-471 and Bruning 2472 circular slide rule instructions. Gifts Of Bruce HildenBrand, Mountainview, CA
  2017.07.23 - MiscUSA/Bruning -Added Bruning 68-471 branded 8" diameter and Bruning 2472 4" Gilson Binary circular slide rules. Gifts Of Bruce HildenBrand
  2017.07.23 - Circular -Added Bruning 68-471 branded 8" diameter and Bruning 2472 4" Gilson Binary circular slide rules. Gifts Of Bruce HildenBrand
  2017.07.22 - MiscJapan - Added Hope No. 32 Mannhiem. gift of Phillip Rodley, Upper Hutt, NZ. Updated layout.
  2017.07.22 - SR_Library/British - Added Thornton AD070 Instructions. Gift of Carol Summers, Welwyn Garden City, Hertfordshire, England UK
  2017.07.22 - PIC/Thornton - Added Thornton AD070. gift of Carol Summers, Welwyn Garden City, Hertfordshire, England UK. Updated layout.
  2017.07.22 - Relay/Ricoh - Added Early Unknown model # Pocket slide rule, Labeled Williams & Benwell Electrical Engineers. gift of Phillip Rodley, Upper Hutt, NZ. Updated layout.
  2017.07.22 - BrandIndex - Added Buss Maker
  2017.07.22 - Rarities - Unsigned Brass Sector (c1730), assumed to be Made by George Adams, London
  2017.07.22 - Rarities - Dual slide Ivory (bone) Proof Rule No.1 Buss Maker 48 Hatton Garden London. gift of Phillip Rodley, Upper Hutt, NZ
  2017.07.21 - Rarities - Added W. Elliot Ivory Sector (pre 1853), and Celluloid Protractor (c1920) gift of Phillip Rodley, Upper Hutt, NZ
  2017.07.21 - SR_Library/Japan - Added Hemmi 283P Instruction Manual. Scann by Patrick Coyle, UK
  2017.07.21 - SR_Library/Post - Added Post 1445P Instruction Manual. Scan by David Hilton, CA
  2017.07.21 - Dietzgen _ Added Dietzgem 1732 Decimal Trig Log Log sn, box, manual, warranty belonging to Bill Teer, Fairfax, Virginia.
  2017.02.16/M365 - Received scan of Hemmi P283 Instruction Manual from Patrick Coyle, UK, Now a Friend of the Museum
  2017.07.16 - Made arrangement to send a Flying Fish 1003 to Phillip Rodley, Upper Hutt, New Zealand.
  2017.07.15.01 - Received gift of Dietzgem 1732 Decimal Trig Log Log sn, box, manual, warranty belonging to Bill Teer, Fairfax, Virginia. Now a Friend of the Museum.
  2017.07.06 - Received donation from Richard Davis of California, a Friend of the Museum.
  2017.07.02 - Received donation from Jose Gabriel Fernandez, a Friend of the Museum.
  2017.06.30 - Received donation from David Hilton of California, a Friend of the Museum.
  2017.06.28 - Ephemera - Added 8 new historical images/photos
  2017.06.25 - MiscUSA/Bruning - Added Bruning 68-471 Binary and 2472 Midget (made by Gilson). Gift of Bruce Hildenbrand.
  2017.06.25 - Orient - Added Early Chinese Shanghai Ding Feng 5471 duplex gift of Phillip Rodley (NZ) and Flying Fish 1009 image from Rod Lovette Collection (Uk)
  2017.06.20 - Received donation from Jeremy McCarthy of the UK, a Friend of the Museum.
  2017.06.20 - Received donation from Roi Gift of Washington, a Friend of the Museum.
  2017.06.19 - Ephemera - Added 2 screenshots from BBC Television showing slide rules.and 1 HH Robertson Ad
  2017.06.19 - Nestler - Added Nestler_34, 1912-47. Scan provided by Otto Van Poelje Collection, Netherlands 2017.06.17 - Received gift of slide rules from Philip Rodely, Upperhutt, New Zealand.
  
  • 17.06.17.01 - Dual slide Ivory (bone) Proof Rule. Stuart Woodhouse Gauger No.1 Buss Maker 48 Hatton Garden London - Add to gallery
  • 17.06.17.02 - Ivory Sector (bone) W Elliot, London - Add to gallery
  • 17.06.17.03 - Japanese Pocket Slide Rule (Ricoh?) Name on SR: Williams & Benwell Electrical Engineers - Add to gallery
  • 17.06.17.04 - Pilot 8" slide rule, missing cursor - scrap to art project
  • 17.06.17.05 - Hope 32 Slide Rule - Add to gallery
  • 17.06.17.06 - Aristo Nr. 89 - Fundraiser
  2017.06.14 - Received gift of 4 slide rules from Bruce Hildenbrand, Mountainview, CA
  
  • 17.06.14.01 - Bruning 68-471 branded 8" diameter Gilson Binary circular slide rule, ©1940, Green sleeve, Manual Ref:ISRM M363
  • 17.06.14.02 - Bruning 68-471 branded 8" diameter Gilson Binary circular slide rule. ©1940,
  • 17.06.14.03 - Bruning 2472 branded 4-1/4" diameter Gilson Midget Binary circular slide rule, ©1936, Brown sleeve, Manual Ref:ISRM M363
  • 17.06.14.04 - K&E N4053-3 sn917195 Kercs , Scrap for art project
  • ISRM M363 - Bruning 68-471 Binary circular slide rule Manual Ref:ISRM 17.06.14.01
  • ISRM M366 - Bruning 2472 Binary Midget circular slide rule Manual Ref:ISRM 17.06.14.02
  2017.06.14 - SR_WhosWho - Updated David D. McFarland entry. David passed on April 20, 2017 at the age of 75. Even while in a wheel chair he attended all the Oughtred Society meetings.
  2017.06.13 - SR_WhosWho - Added Mike Weaver of the U.K. Collector and donor of slide rules to ISRM galleries.
  2017.06.12 - Purchased domain name: sliderulemuseum.org to use for future website development to insure we don't blow up sliderulemuseum.com. Watch my progress.
  2017.06.11 - Calculators, SR_Terms, SR_Loaners, Ephemera, and others. - Altered heading and increased width to 820 pixels.
  2017.06.10 - Library_USA, WhatsNew, Intro, Friends, and others. - Altered heading and increased width to 820 pixels.
  2017.06.09 - KE_Standard and KE_Specialty - Altered heading and increased width to 820 pixels.
  2017.06.08 - SRM_Menu - Reduced the length of the left navigation menu by moving most of the upper section to the HOME page under the Library links. Created a separate page for the Brand Index.
  2017.06.07 - The Curator is expirementing with changing the website to be more mobile friendly. Large line spacing between link targets for touchscreens. You will see erratic behavior.
  2017.06.02 - ISRM Home Page - Reformated the paragraphs and added a slide rule image.
  2017.05.23 - Received donation from Steve Smith
  2017.05.23.01.X - Restored a Nestler 23R System Rietz with a Dietzgen all-glass cursor - Replace S250 in Nestler Gallery (Deaccessioned) 2017.05.22 - Received gift of misc slide rules, abacus and drafting tools from Pam Eaton of Dennis, Massachusettes
  
  • 17.05.22.01 - Abacus/Soroban beads:1x4x15 195x53x15mm in red/black cardboard sleeve
  • 17.05.22.02 - Pickett 120 for SR Loaner program
  • 17.05.22.03 - Staedtler-Mars No54455 Reitz-Scolaria - Variant, Add to Germany/DDR Gallery
  • 17.05.22.04 - Sterling Metric Converter 1973, yellow slide
  • 17.05.22.05 - Aristo Scholar Nr.0903LL Urheberrechtlich gesschützt dcG5925 - all white stock and slide.- Add to gallery
  • 17.05.22.06 - Staedtler-Mars No54401 Darmstadt dc87 Nestler Equivalents label No scale labels to gallery
  • 17.05.22.07 - Dietzgen 1760 Mannheim Slide Rule, broken all-glass cursor
  • 17.05.22.08 - Perrygraf - Royal Coach Sprinklers Irrigation Slide Chart
  • 17.05.22.09 - K&E 4056 Favorite sn563371 Black metal Cursor. add to gallery
  2017.05.02 - Received gift of 33 slide rules from Mike Weaver of Bridgend, United Kingdom. Note: The assigned ISRM ascession numbers are based on Mr. Weaver's personal references and are non-sequential.30 of the slide rules are new to ISRM or are physical replacements to existing virtual images.
  
  • 17.05.02.01 - Jakar No.1013. Chipped stock. Cracked cursor.
  • 17.05.02.02 - Faber Castell 52/82 Log Log D-Stab, Made in Switzerland. Replace S242
  • 17.05.02.08 - W.H. Smith Simplified Rietz Pocket Slide Rule. With Manual - Replace P207 in U.K. Gallery.
  • 17.05.02.09 - Unique Universal - New to ISRM Replace S279 in Unique Gallery
  • 17.05.02.12 - Unique 'Brighton' USRC Logo - New/Replace S279 in Unique Gallery
  • 17.05.02.13 - Unique Ten-Twenty, brown case - New to ISRM Replace REF in Unique Gallery
  • 17.05.02.14 - A.W.Faber Castell 1/87 Rietz DC502 - New Addition to Faber Gallery
  • 17.05.02.15 - Blundell Harling BRL 304 Darmstadt Academy, England. White Braces - Duplicate
  • 17.05.02.16 - K&E 4081-3 Log Log Decitrig sn979739 KERCS Good leather case - for fundraiser.
  • 17.05.02.19 - Sun Hemmi 40RK Mannheim dc HG - New Addition to Hemmi Gallery
  • 17.05.02.21 - Blundell Harling 802, England - new addition to Blundell Gallery
  • 17.05.02.24 - UTO Darmstadt No. 651U Promo Hellerman Pocket - new addition to UTO or U.K Hellerman Gallery
  • 17.05.02.25 - Jakar No29 Student Log/Log with Manual - Replace S282
  • 17.05.02.26 - Sterling 694 Deci Trig Log-Log in Retail Packaging - Add to loaner program
  • 17.05.02.27 - W.H. Smith Simplified Rietz 10" Slide Rule.New Addition to U.K. Gallery.
  • 17.05.02.28 - Flying Fish 1004 Vector Log Log Duplex - New Addition, Replace REF in Orient Gallery
  • 17.05.02.31 - Archimedes Marca Registrada, Brazil - Add to Anericas/S.A./Mexico Gallery
  • 17.05.02.33 - P.I.C. No.101/PCB Add to PIC/Thornton Gallery
  • 17.05.02.34 - Simplon Primary Log Log - New Addition to Simplon U.K. Green/clear sleeve. similar to Bilateral Log Log.
  • 17.05.02.35 - Engineering Instruments 10inch Slide Rule. No model number. Blue/yellow sleeve.
  • 17.05.02.36 - The Technical Standard, Aeronautical Slide Rule - Add to U.K. Gallery
  • 17.05.02.41 - Dietzgen 1732 Decimal Trig Log Log sn527230 - Replace S248
  • 17.05.02.43 - Nestler No.0370 Elektro with Manual dc1S4 (Replace 09.04.24.06)?
  • 17.05.02.44 - Hemmi P281 - Duplicate for fundraiser
  • 17.05.02.45 - Blundell Luton Thype G-1, dark brown Bakelite. Red cardboard box. Blundell's 1st slide rule model. Replace REF in Gallery
  • 17.05.02.46 - P.I.C. No.3654 Sheet metal frame cursor, blk cardboard case - Add to PIC/Thornton Gallery
  • 17.05.02.47 - Hughes-Owens 1768C - dcHF - Duplicate for Fund Raiser
  • 17.05.02.48 - Logarex Exponent 27602-II, Czechoslovakia - New Addition to Eastern Europe Gallery
  • 17.05.02.49 - A.W.Faber Castell 1/60 Mannheim DC750 - New Addition to Faber Gallery
  • 17.05.02.51 - Royal No. 1002A - Add to Misc.Japan Gallery
  • 17.05.02.53 - Marc Pocket slide rule. Inch scale. New Addition to gallery.
  • 17.05.02.54 - Helix Log Log U07 - New Addition to Helix U.K.. Gallery
  • 17.05.02.57 - Blundell Luton Type G-2, Black Bakelite. First generation. New to Gallery
  • 17.05.02.59 - Diwa Rietz-Ideal No.1-1 dc25, Denmark, Brown leather sleeve - New Addition to Diwa Gallery
  • 17.05.02.60 - B.R.L. S100 Pocket Mannhiem Promo, Scottish Cables Limited. Add to BRL Gallery
  2017.04.26.01 - Received gift of Pickett N1010-ES Trig from Robert Elliot of Caray, NC.
  2017.04.01.01/M371 - Received gift of Tasco Pocket Arithmometer from Peter Turk of Canada.
  2017.02.16 - Fundraiser - received a donation from Kent Berglund
  2017.02.16 - Fundraiser - received a donation from James Edel
  2017.02.16/M364 - Received scan of Post 1445P Instruction Manual from David Hilton
  2017.01.17 - Faber - Corrected date of first slide rule production from 1882 to 1892, according to Dieter von Jezierski, as discovered by Trevor Catlow of the UK.
  2017.01.07 - Fundraiser - Received donation from Richard Philabaum, now a Friend of the Museum
  2017.01.05 - Fundraiser - Received donation from Jordan Hatherley, now a Friend of the Museum
  

  ---

  2016.12.28 - Fundraiser - Received donation from Riki Nakamoto of Hawaii, Friend of the Museum
  2016.12.22 - Fundraiser - Received donation from Kenneth Yanosko of California, now a Friend of the Museum
  2016.12.12 - Fundraiser - Received donation from Hans Milton of Sweden, a Friend of the Museum
  2016.11.25 - Fundraiser - Received donation from Peter Wiesbauer of Germany and Michael Fink of Australia., Friends of the Museum
  2016.09.19 - Received gift of slide rules from Rob Snider of Nederland, Texas. Belonging to father Homer D,. Snider
  
  • 16.09.19.01 - K&E 4083-3 Vector Duplex sn395769 KERCS - to be restored and added to gallery
  • 16.09.19.02 - K&EN4058W Beginners slide ruole , duplicate
  2016.08.07 - Received gift of Slide Charts from David R. Despain of Fort Worth, Texas.
  
  • 16.08.07.01 - American Slide Chart - Andrew Heliax Connector Guide, Andrew Corp.
  • 16.08.07.02 - American Slide Chart - Signal level Conversion, Spectrum Contriol, Inc
  • 16.08.07.03 - Rockwell Alignment Guide For 309B type Equalizer
  • 16.08.07.04 - Arth-o-graf Slide Chart - Wavelength, Decibel Conversion, Sinclair Technologies
  • 16.08.07.05 - American Slide Chart - Western MicrowaveFerrite Device Calculator
  • 16.08.07.06 - Andrew Heliax Coax cable Performance Calculator, 1994, Andrew Corp.
  • 16.08.07.07 - National Semiconductor Transmission Line Redesigner
  • 16.08.07.08 - Perrygraf GE Mobile Radio Tone Frequency Calculator 1973
  • 16.08.07.09 - Newark Electronics Metric Converter
  • 16.08.07.10 - Indium Corp. Pocket Flux Calculator
  • 16.08.07.11 - Rogers Corp. Frequency Copper Clad Laminate Materials
  • 16.08.07.12 - Times Microwave Coax Cable Chart
  2016.08.01 - Fundraiser - Received donation from Patrick Rowlinson of New Zealand.
  2016.07.28.01/M362 - Received gift of Thornton AD070 slide rule with instructions, from Carol Summers, of Welwyn Garden City, Hertfordshire, England UK with bio and photo.(in email).
  2016.07.20 - Fundraiser - Received donation from D.L. Hilton of Westchester, California.
  2016.07.15 - Fundraiser - Received donation from David Despain of Fort Worth, Texas.
  2016.07.10 - Received various slide charts from Monagle, Orange California.
  
  • 16.07.10.01 - American Slide Chart Vortec Corp. Heat Load calculator
  • 16.07.10.02 - American Slide Chart, Yuasa Battery Discharge Calculations
  2016.07.06 - Received various slide charts and disks and mechanical calculators from Bert Kolts of Estes Park, Colorado.
  
  • 16.07.06.01 - Chadwick Majic Brain Calculator
  • 16.07.06.02 - Add-A-Mite Pocket Calculator
  2016.07.05 - Fundraiser - Received donation from Richard Burns.
  2016.07.01 - Received gift of slide rules from Phillip Rodley, Upperhutt, New Zealand.
  
  • 16.07.01.01 - A.W. Faber Decimal Keeper slide rule, Bavaria, Missing lens.
  • 16.07.01.02 - Early Chinese Shanghai Ding Feng 5471 duplex
  2016.06.02 - Received gift of slide rules from Bob Schwartz, Temple, Texas.
  
  • 16.06.02.01 - Pickett 800-T, alternate scale set,grooved stock, metal bars, rounded braces Missing screws. To Gallery
  • 16.06.02.02 - Pickett N1010-T Trig Brown leather case. Round Black Logo, curved braces, curved lens. To gallery.
  • 16.06.02.03 - Acumath 500 Round Braces
  • 16.06.02.04 - Acumath 1211 pocket slide rule. brown sleeve. Pre-acumath logo. To gallery. Replace P229
  • 16.06.02.05 - Pickett N902-ES Square Braces, Round black logo, extended cursor bars. Add to gallery
  • 16.06.02.06 - Sterling 587 pocket,
  • 16.06.02.07 - K&E 4090-3 sn 476471, no cursor with manual.
  • 16.06.02.08 - Concise 320 Calender Variation 2, Amberlite promo.
  • 16.06.02.09 - Concrete Estimator, Maker Unknown, (put with GUCO) window in stock.
  • M352 - K&E 4090 manual. add to library. Add to gallery
  • Acumath 400, for loaner program.
  2016.06.21.01 - Received gift of slide rule books and manuals from Anita Hansen of New Milford, CT.
  
  • M353 - Basic Slide Rule Operation, W.S.Mittelstadt
  • M354 - Computing Devices, Webster Publishing
  2016.06.21.01 - Received gift of Acumath 400 slide rule Wes Boyce of Fairport, New York, for loaner program. He used it in High School Physics 1968-69
  2016.05.26.01 - Restored Early cursor for Deitzgen 1745 Maniphase Duplex Trig no sn. Used SIC cursor Blocks (redrilled and tapped) and one lens, used 5 min epoxy for spacing
  2016.05.15 - Fundraiser - Received donation from Michael Sonnenblick.
  2016.05.18.01 - Restored Early cursor for Deitzgen 1732 Maniphase Multiplex Decimal Trig Log Log sn510139
  2016.05.15 - Fundraiser - Received donation from Steve Smith of Texas.
  2016.05.15 - Fundraiser - Received donation from Phillip Rodley of New Zealand .
  2016.05.13 - Fundraiser - Received donation from Giuseppe Bianchi of Italy.
  2016.05.12 - UnitedStates - Added Gerber GraphAnalogue donated by Marie Sayre Cole of Wappinger Falls, New York.
  2016.05.10 - Received a gift of slide rules and instruments from Marie Sayre Cole of Wappinger Falls, New York. Belonged to father Clifford L. Sayre, Jr. and Grandfather Clifford L. Sayre Sr.
  
  • 16.05.10.01 - Gerber GraphAnalogue Model GA-103 with manuals and case - Father
  • M347 - Gerber GraphAnalogue Model GA-103 manual
  • M348 - Gerber GraphAnalogue Model GA-103 Brochure
  • M349 - Gerber Variable Scale Brochure
  • M350 - Gerber Variable Scale TP007100 Manual
  • 16.05.10.02 - Dietzgen Phillips Slide Rule (C1914) missing cursor, mahagony well, no model No. Imprint - Grandfather
  • 16.05.10.03 - K&E 4080-3 sn352819 KERCS Dietzgen case Scale set #2 3rd variation Replace ISRM 12.04.23.01 - Father
  • 16.05.10.04 - Texas Instrument SR-52 Calculator sn050024 dc0876 with manual. Corroded batteries. untested.
  • 16.05.10.05 - Micronta proportional compass calipers
  • 16.05.10.06 - Dietzen set of 8 archetectural scales in mahagony box
  • 16.05.10.07 - Sterling Decimal Trig LogLog (for loaner program)
  • 16.05.10.08 - Perrygraf 1963 slide chart CEC Accelerometer calculator
  2016.04.06.01 - Received gift of slide rules from Karen Miller of Ventura, California. Belonged to R.T. Miller
  
  • 16.04.06.01 - K&E 4081-3 Log Log Duoplex Decitrig sn402506. Has KERCS but was able to restore cursor. With intact brown sleeve.
  • 16.04.06.02 - K&E Doric N9081-3 Log Log Duoplex Decitrig sn23522. with black sleeve
  • M??? - Manual, K&E N4081-3 Log Log Decitrig, Owner R.T.Miller
  2016.03.10.01 - Received gift of Rockwell 64D Slide Rile Calculator sn 103013.086 from Manny and Marti Leinz of Chino Hills, CA
  2016.03.02 - Fundraiser - Received donation from Michael Mjelde
  2016.02.29 - Received gift of slide rules, drafting tools and calculators from Deborah Brooks, Jackson, New Jersey, which belonged to her father J.J. Nelson, Western Electric
  
  • 16.02.29.01 - K&E 4081-3 LogLogDuplex Decitrig sn 267524 in box w/sleeve, manual and ephemera (no markings).
  • 16.02.29.02 - TI-59 Slide Rule Calculator sn0667001 dcATA0180 w/ master Library Modules (not tested, no battery damage)
  • 16.02.29.03 - TI-30Xa Solar Calculator INOP
  • 16.02.29.04 - 2 Sterling Slide Rules, for Loaner Program
  • N600-T Pickett Log Log Manual/Warranty. Has name: J.J. Nelson, Western Electric
  • 16.02.29.05 - K&E 4081-3 LogLogDuplex Decitrig sn487639 w/sleeve, manual
  • 16.02.29.06 - TI Mini Databank Calculator dc0887, manual
  • 16.02.29.07 - K&E 795-8 Minusa Drawing Set in box
  2016.02.24 - Fundraiser - Received donation from Jose Gabriel Fernandez
  2016.02.23 - EastEurope - Made corrections and added information on Gamma and Logar slide rules from Hungary.
  2016.02.23 - United Kingdom - Made corrections on Otis King slide rules, per Dick Lyon.
  2016.02.15 - SR Loaner - Sent 25 slide rules to the wrong school. :o(
  2016.02.08 - United States - Added bio information about Joseph H. Gerber to the Gerber Scientific Variable Scale Slide Rule
  2016.02.08 - SR_Terms/Encyclopedia - Added entries about Joseph H. Gerber and the Gerber Scientific Company
  2016.02.07 - Received a gift of slide rules and ephemera from Ed Wright of Odenton, Maryland.
  
  • 16.02.07.01 - Pickett Model 3 Deci-LogLog Vector Sn C028832 in Rubber sleeve. Name of owner: Logan Sturgis
  • 16.02.07.02 - K&E Decilon 68-1100 sn 090416 in Leather sleeve, cracked flap. Name on slide rule and sleeve: Lynn Lucky
  • 16.02.07.03 - Post Versalog dc M.A. (Jan1962) Green COS label, sn300444, in leather sleeve. Name on sleeve: R.J.Jax???
  • M356 - Textbook, "The Complete Slide Rule Handbook, Principles and Applications" by J.N.Arnold, Purdue University, ©1954 Prentice-Hall
  • M357 - Textbook, "Basic Slide Rule Operation", by W.S. Mittelstadt, Eastman Kodak Company, © 1964 McGraw Hill
  • M358 - Textbook, "Practical Use Of The Sliderule" by Calvin C. Bishop, Copyright 1947 Barnes & Noble
  • M359 - Book, Reprint "A History of the Logarithmic Slide Rule" by Florian Cajori, 1909. 1994 Astragal Press.
  • M360 - Reference Book "K&E Salisbury Products Division Slide Rules" by Joseph L. Soper, Oughtred Society Publication
  • M361 - Reference Book "Calculating With TonesLogic of Music, The Logarithmic " by Klaus Kuehn and Rodger Shepherd, Oughtred Society Publication
  • M??? - Manual, Pickett "Elementary Simplex Math Slide Rule" by Maurice L. Hartung 1965
  2016.01.30 - Fundraiser - Received donation from Adam Coleman, now a Friend of the Museum.
  

  ---

  2015.12.14 - Fundraiser - Received donation from Kent Berglund, of Illinois.
  2015.12.06 - Received gift of Acu-Math 400, for loaner program, from Michael Bobick.
  2015.12.05.01 - Received gift of Pickett 52T Type-A1 Arial Photographic Data MIL-C-4318A from Steve Wilkie, Sacramento, California.
  2015.11.18 - Pickett - Added Pickett N901-T Simplex, belonging to Naval Aviator Charles E. Rash (1918-1989).
  2015.11.18 - Hemmi - Added Hemmi 251 for Mechanical Engineers, belonging to Naval Aviator Charles E. Rash. (1918-1989)
  2015.11.18 - Circular and Aerospace - Added Felsenthal MK-8-B Flight Computer, belonging to Naval Aviator Charles E. Rash. (1918-1989)
  2015.11.17 - Graphoplex - added Caltex Oil Viscosity Slide Rule, gift of kenneth Eyre, of the UK.
  2015.10.26 - Received donation from Rod Lovette, UK.
  2015.11.03 - Received gift of slide rules belonging to Randy Rash's father, Chuck Rash. (1918-1989)
  
  • 15.11.03.01 - Hemmi 251 (For Mechanical Engineer) dcKJ (Oct1960). in a US Army Load Adjuster sleeve
  • 15.11.03.02 - US Army Air Forces Load Adjuster Sleeve
  • 15.11.03.03 - Pickett 901-T Simplex in black naugahyde sleeve.
  • 15.11.03.04 - Felsenthal MK8B Aviation Computer US Navy
  2015.11.01 - SR_WhosWho - Added Michael Scheffert (1652-1720), the earlist and most important maker of mathematical instruments in Germany. Information by Werner Rudowski.
  2015.10.26 - Received donation from Karl Kleine, Germany.
  2015.10.18 - Received donation from Danial Trousant www.linealis.org
  2015.10.13.01 - Received gift of slide rules belonging to Randy Rash's fatherChuch Rash.
  2015.10 - FundRaiser - Received donations Jeremey McCarthy, Karl Klein, Rodney Lovett
  2015.09.25-27 - Attended IM2015 in Burlingame, California. Obtained several new specimens from the Tom Wyman Collection and other offerings.
  
  • 15.09.27.01 - Regolo Di Convergenza, Mo Mattei, Relazione Fra Angoli Sessagesimali E Millesimali (Artillery) gift of Nicola Marras. (Slide rule for convergence for the artillery The straight edge movable from a door side trigonometric values ??and other corrections for the convergence)
  • 15.09.27.02 - Gilson Atlas Calculator Patent 1-17-1922, Copyright 1931
  • 15.09.27.03 - A.W. Faber with Decimal Keeper Circa 1897-1906
  • 15.09.27.04 - Pickett N700-T Type A-2 USAF Photographic Slide Rule Gift of Walter Shawlee
  • 15.09.27.05 - K&E 4076 Duplex Trig c1913
  • 15.09.27.06 - Halden Calculex Pocket watch calculator
  • 15.09.27.07 - Gebr. Wichmannn, Berlin Pocket watch calculator Ref:DG-2
  • 15.09.27.08 - Fowler's Textile Calculator Ref:DG-7
  • 15.09.27.09 - Scientific Publishing Company, Manchester, England Pocket watch calculator
  • 15.09.27.10 - K&E Sperry's Calculator, Pocket watch calculator
  • 15.09.27.11 - Calculgraphe H.C., Pocket watch calculator
  • 15.09.27.12 - French Sector, Early Brass. Ref:David Stanley Auctions #852
  • 15.09.27.13 - K&E 4095-3 Merchant Rule sn322686 Magnifying Cursor
  • 15.09.27.14 - Birkett WB400 Safety Valve Calculator Circular
  2015.08.29 - Received gift of slide rules, drafting tools and calculators from Marilyn (Stobbs) Ulrich, of 0'Fallon, Missouri.which belonged to her husband, George W Ulrich (1938-2015), who work at McDonald Aircraft.
  
  • 15.08.29.01 - K&E 4080-3 LogLogDuplexTrig sn508088 w/manual (Repaired Cursor).
  • 15.08.29.02 - K&E 9061-1 Doric sn5761 w/4161 manual, green sleeve. To gallery with photo and bio
  • 15.08.29.03 - Futura 509 Ruler, clock & Solar Calculator, GM branded black sleeve
  • 15.08.29.04 - Engineering Instruments, no model number, Red CI scale. "Marylin Stobbs" written in well.To gallery with manual
  • 15.08.29.05 - Post 1460 Versalog (green COS) dcPD (April 1965) with manual
  • 15.08.29.06 - S.I.C. (Scientific Instrument Corp.) 250 circular Professional slide rule, Patent 440028, 130076. add to gallery Variant of C35
  • M347 - K&E 4161 Slide Rule Manual. Red/grey cover. To be scanned.
  • M355 - K&E 4161 Slide Rule Manual. Red/grey cover. To be scanned.
  2015.08.20 - 2014-2015 Fund Raiser - Received 46% of goal from 25 Friends of the Museum.
  2015.08.20 - SR_Library - Library downloads are now available as school is back in session. A dissapointing fundraiser as only 46% of our goal was reached. We still have until the end of the year.
  2015.08.13.01 - Received gift of The Lightning Calculator, The Calculator Corp. Grand Rapids, Mich (1921-1940). from Phillip Rodley, Upperhutt, New Zealand.
  2015.08.16 - FundRaiser - Received donation from Richard Broman
  2015.08.13 - Received gift of slide rules, drafting tools and calculators from Deborah Brooks, Jackson, New Jersey, which belonged to her father J.J. Nelson, Western Electric
  
  • 15.08.13.01 - K&E 4081-3 LogLogDuplex Decitrig sn 267524 in box w/sleeve, manual and ephemera (no markings).
  • 15.08.13.02 - TI-59 Slide Rule Calculator sn0667001 dcATA0180 w/ master Library Modules (not tested, no battery damage)
  • 15.08.13.03 - TI-30Xa Solar Calculator INOP
  • 15.08.13.04 - 2 Sterling Slide Rules, for Loaner Program
  • N600-T Pickett Log Log Manual/Warranty. Has name: J.J. Nelson, Western Electric
  2015.08.16 - FundRaiser - Received donation from Gwendolyn Patton
  2015.08.07 - FundRaiser - Received donation from David Guthrie
  2015.08.01 - SR_WhosWho - Added Nelson M. Cooke (1903-1965), Designer of the Cooke Radio Rule
  2015.07.30 - FundRaiser - Received donation from Marion Moon
  2015.07.20 - Received gift of slide rules from Nick Kratz, Pasadena, California
  
  • 15.07.20.01 - Halden Calculex Eugene Dietzgen Agents. Broken lens on one side. Two manual in leather sleeve.Add to Gallery
  • ISRM M367 - Halden Calculex Eugene Dietzgen Agents.
  • 15.07.20.02 - K&E 4041 lot 211, with metal framed cursor.Missing lens, Made by D&P? Initial J.K.B. on slide. Add to Gallery
  • 15.07.20.03 - K&E 4092 with All Glass Cursor. Lot 3. Name engraved on stock: R.W. Kratz. Add to Gallery
  • 15.07.20.04 - Aristo 89 Pocket Rietz, dc,G6128, Hugh Semiconductor Promo (repaired)
  • 15.07.20.05 - Sterling 584 For adoption.
  • 15.07.20.06 - Hughes Program Business Management Development Ruler, calculator clock. Clock missing cover, Solar Calc works. For adoption.
  • 15.07.20.07 - Diwa_No601-1_Fansteel Promo
  • M346 "Slide Rule", Revised 1942, Pasedena Junior College.WWII era. Typewritten text book.
  2015.07.20 - 2014-2015 Fund Raiser - Received 33% of goal from 20 Friends of the Museum.
  2015.07.11.01 - Received gift of rare Faber-Castell 310/83N, overhead projector slide rule (for 2/83N) from Ralph Stern, Ann Arbor, Michigan. He bought it at an office supply store in London Ontario about 1990.
  
  2015.07.07 - Received gift of two slide rules from Steve Stewart, Lafayette, Colorado..
  
  • 15.07.07.01 - K&E 4081-3 sn830160 Decitrig, Name "R.L.Stewart" etched in braces. KERCS. Pristine Leather sleeve.with instructions. Gallery.
  • 15.07.07.02/M375 - Pickett&Eckel Model 2, Deci Log Log Magnesium , snC026739, in rubber sleeve, with instructions. Replace S052.
  2015.06.25 - Received gift of two rare slide rules from Phillip Rodley, Upperhutt, New Zealand.
  
  • 15.06.25.01 - J.A.Nicholl & Co., London, APP OBS CF Fire Slide Rule MK VI. 1917. All metal
  • 15.06.25.02 - Dring & Fage, London. Customs and Excise.DP312. Jan '62 (1862). Two'Foot Boxwood
  2015.06.25 - Adoption - Shipped 5 slide rules to suppporters.
  2015.06.25 - Back from vacation. Lots of catching up to do.
  2015.06.22 - Received gift of slide rules from Jim K. Neathery of Lexington, Kentucky.
  
  • 15.06.22.01 - Charles Bruning 2420 in box with Pristine Leather sleeve and Instructions. For Adoption.
  • 15.06.22.02 - Acu-Math No.400 with sleeve. For SR Loaner program.
  • 15.06.22.03 - Dietzgen No.1757 Primatrig. For Adoption.
  • 15.06.22.04 - Engineering Instruments 10B in blue and yellow retail sleeve. For gallery
  • 15.06.22.05 - Engineering Instruments 10B in blue and red retail sleeve. Name on back of SR: W.S.Elrod. For gallery
  • 15.06.22.06 - Post 1447 Mannheim. dcJE For SR Loaner program.
  2015.06.17 - Received gift of slide rules from Ellen Hathaway of Indian Head Park, Illinois..
  
  15.06.17.01 - K&E 4058W Beginner's Slide Rule . For Adoption.
  • 15.06.17.02 - K&E 4088-3 sn137431. Replace S438. restored all glass cursor.
  • M345 K&E Polyphase Duplex Trig No. 4070 Slide Rule Manual copyright 1939
  2015.06.03.01 - Received gift of K&E 4053-3 Lot 17 slide rule from Ann Morton, Lakewood, Colorado. Belonged to father Henry Stuart Morton 1908-1964. With photo. Replace 10.03.01.10
  2015.06.03.02 - Received gift of Relay No. 505 dc E.K-4 slide rule from Lynne Powell, Lakewood, Colorado. She used it at Broomfield High School between 1967-1970
  2015.05.31 - KE_Standard - Updated Biographical information on Gregory Patterson. K&E 4081-3 sn824972. Added movies of his trains.
  2015.05.30 - Start of annual fund raiser. Library is disabled now that school is out. Will be back on line when goal is reached.
  2015.05.21 - Nestler - Revised introduction. Added 1908-1911 Model 23.Scan by Thomas Bahr
  2015.05.21 - SR_Dates - Added Albert Nestler Timeline.
  2015.05.20 - SR_Library/UnitedStates - Added Instructions (ISRM M345): Special Slide Rule For Natural Gas and Air Computations copyright 1910 by Forrest M. Towl. Gifts of grandson, Theodore Towl.
  2015.05.20 - Rarities/Towl - Added more research on Forrest M. Towl. Added 3 slide rules. Gifts of grandson, Theodore Towl.
  2015.05.16 - Rarities/Towl - Added web page on Forrest Milton Towl, Proffesor.
  2015.05.15 - Received ephemera related to Forrest M. Towl Piping Slide Rules, gifted by Grandson Ted Towl.
  2015.05.15 - Patents/DE - Added Nestler patent DE173660C July 27, 1906 Rechenstab by Albert Nestler
  2015.05.14 - Received gifts of 28 Sterling #589 Mannheim slide rules for Schools. Gifted by Otto Van Polje, in the Netherlands.
  2015.05.13 - Received gifts of 3 Kirby & Bro. NY, maker of Forrest M. Towl Piping Slide Rules, gifted by Grandson Ted Towl.
  2015.05.12 - Informed that Colin Barnes (1940-2016) in the UK has gifted the following 25 plastic SR's for schools
  
  • 15.05.12.11 Jakar 1011 LogLog Add to archives
  • 15.05.12.20 Jakar 99 L/L Duplex. with insert. green/white case. Add to archives
  • 15.05.12.03 Nestler 0239 Reitz, dc 68 (1968), add to archives
  • 15.05.12.04 Aristo Scholar 0903LL dc G6237 (1962) with instructions retail sleeve add to archives Replace S202
  • 15.05.12.01 Aristo 99, dcG596 (1959) with insert, sticky cursor. add to archives
  • 15.05.12.22 Aristo Studio 0968 Duplex. Pads on one side. V2C dc6031 Cardboard sleeve. Owner:R.G. Arnold. Duplicate
  • 15.05.12.23 Aristo 970 MultiLog Variant, dc608. Cardboard sleeve. Cracked cursor. Owner J. Fehlmann. Duplicate
  • 15.05.12.24 Aristo 970 MultiLog Variant, dc577. Cardboard sleeve.. Add to archives
  • 15.05.12.02 Aristo 0901 dcWFX25 (1969), plastic case, Made in Austria. Add to archives
  • 15.05.12.12 Blundell B.R.L. Academy 300. Blue/clear vinyl sleeve. Add to archives
  • 15.05.12.13 Blundell B.R.L. Academy 303 Reitz. Blue/clear vinyl sleeve. Add to archives
  • 15.05.12.17 Blundell B.R.L. Academy 304 Darmstadt.LogLog. Add to archives
  • 15.05.12.19 Blundell Harling 804 Duplex LogLog. w/instructions Add to archives
  • 15.05.12.18 Blundell 803 Reitz. Yellow braces. Blue plastic case. Add to archives
  • 15.05.12.05 Faber-Castell 57/87 dc473. 25cm scale. Made in Switzerland. Green/White plastic sleeve. Add to archives
  • 15.05.12.06 Faber-Castell 57/87 dc566 10inch scale. Made in Germany. Clear plastic sleeve. Add to archives
  • 15.05.12.07 Faber-Castell 52/82 D-stab. LogLog dc3. Wide cursor. Made in Switzerland. Green/White plastic sleeve. Replace S242
  • 15.05.12.08 Faber-Castell 52/82 D-stab. LogLog dc3. Narrow Cursor. Made in Switzerland. Clear plastic sleeve. Add to archives
  • 15.05.12.21 Faber-Castell 57/89 Darmstadt dcO71 (1971) Made in Austria. gray plastic case. Add to archives
  • 15.05.12.10 Hemmi P280 LogLog dcVF (June1971) Cracked Cursor. Blue/White case. duplicate
  • 15.05.12.15 Hemmi P280 LogLog dcYA (Jan1974) Blue/White case. duplicate
  • 15.05.12.09 Hemmi P281 dcUK (Nov1970) No Case. duplicate
  • 15.05.12.14 Hemmi P281 dcVB (Feb1971) Blue/White Case. For loaner
  • 15.05.12.16 Ahrend Hemmi P283 LogLog dcUG (Jul1970) Blue/White Case. duplicate
  2015.05.11 - Received gifts of 13 slide rules, for schools from Don DiGalbo .
  
  • 15.05.11.01 Acumath No. 150 Log Log Decimal Trig with manual and box. Slide is stuck to stock. Unusable. 3 layer vinyl, center layer is black. add to Gallery
  • 15.05.11.02 Acumath No.1311 Log Log,Vinyl laminated on Magnesium Stock (All Metal) in Red retail box. adopt duplicate F.S.
  • 15.05.11.03 Acumath No.1240 Pocket, white braces, early w/o oval logo, in retail box, with manual and sleeve (no trig scales) add to Gallery
  • 15.05.11.04 Acumath No.1200 Pocket, black braces, in retail box, with manual and sleeve (with trig scales) add to Gallery Replace P065
  • 15.05.11.05 Acumath No.1211 Pocket, metal braces, in retail box, with manual and sleeve (with trig scales) adopt F.S.
  • 1 Pickett Trainer, 121 (narrow Stock) - To Loaners
  • 1 Pickett Trainer, 120 (narrow Stock, black braces), manual and box. - To Loaners
  • 2 Sterling 594 Log Log - To Loaners
  • 2 Sterling 584 Mannheim (1 2-bridge, 1 5-bridge) - To Loaners
  • 1 Acumath No. 400B - To Loaners
  • 15.05.11.06 Acumath No. 600 Basic Trig with manual and box. adopt F.S.
  2015.05.11 - Received gifts of 5 slide rules for Schools, from Rich Vigil. of Damascus, Maryland.
  
  • Acu-Math 500 To
  • 15.05.11.01 Pickett 125-T (Microline wide stock), add to Gallery
  • Acumath No. 400 To Loaners
  • 15.05.11.02 K&E 4158 K-12 Prep. add to Gallery
  • 15.05.11.03 K&E 4181-3 All Plastic Decitrig, sn024987. add to Gallery
• 2015.05.09 - Received gifts of 45 slide rules for Schools, from Dick Rose of Rose Vintage Instruments, Ohio.
  
  • 15.05.09.01 K&E 4081-3 Log Log Duplex Decitrig. sn530836, To Adoption
  • 15.05.09.02 K&E 4181-3 Log Log Duplex Decitrig. sn354695, All plastic. To Adoption
  • 15.05.09.03 Pickett N803-ES Simplex Trig, To Adoption
  • 15.05.09.04 Pickett N-500-ES Hi Log LogTrig, To Adoption
  • 15.05.09.05 Dietzgen 1739-L Clear-Scale. Add to Gallery
  • 15.05.09.06 Hemmi P40RK plastic, dcTH. Add to Gallery
  • 15.05.09.07 Hemmi 40RK, dcTA (Jan 1969) unopened sleeve, Add to Gallery
  • 15.05.09.08 K&E N9081-3 Doric Log Log Duplex Decitrig. sn19756, corroded braces replace ISRM 11.11.23.01 sn53602
  • 15.05.09.09 Pickett 120-ES
  • 15.05.09.10 Acu-Math 511 Mannheim Professional, Laminated over magnesium
  • 2 Dietzgen 1767 National
  • 1 K&E 4081-3 Log Log Duplex Decitrig. sn082981, has Kercs Scrap
  • 19 Pickett 80,120 Trainer,120 (narrow Stock), 120-T, 121-T (Microline wide stock), To Loaners
  • 4 Pickett 140-T/ES Log Log (Microline wide stock), To SR Loaner Set
  • 3 Post/Hemmi 1447, 40RK To SR Loaners
  • 7 Pickett (N)902-ES/T Simplex Trig. To SR Loaner Set (now has 24 SR's need 25 total)
  2015.05.08 - Received Gift of Post 1447 Mannheim for schools, from Janet Patterson, Madison, North Carolina
  2015.05.08 - Received Loaner slide rules back from NV Fitton, Alexandria, Virginia.
  2015.05.01 - Rarities - Added to 4 foot D&F Gauging Rule the paper: Gauging: the art behind the slide rule by Tom Martin of the UK.
  2015.05.01 - Pickett - Added 1954 Model 1010-T in retail box with Manual. Gift of Randy Shrimplin, Okeechobee, Florida.
  2015.05.01 - Dietzgen - Added(Replaced) Dietzgen 1752P 20 inch - Maniphase (L05), gift of Ed Millis, Dallas, Texas
  2015.05.01 - SR_Library/Catalogs - Added two Pickett & Eckel pocket catalogs from 1950, and 1954. One distributed by Charles Bruning Co.
  2015.05.01.01 - Concise - Added Sama&Etani 600-T Reference Tables. Gifted by Becky Konshak. Used in H.S. 1968 in Lakewood, CO
  2015.05.01 - SR_Intro - Added pictures of Becky and Deacon with equipment used in the archiving center of ISRM
  2015.05.01 - SR_Library/Catalogs - Added A. Lietz Company catalogs from 1893, 1897, 1909, and 1938. Also separated out the slide rule pages.
  2015.05.01 - United States - Added Lietz logo and links to 1893, 1897, 1909, and 1938 catalogs.
  2015.05.01 - Nestler - Corrected date on Albert Nestler A-G, LTD to 1923. Thanks to Marion Moon (California) and Otto van Poelje (Netherlands)
  2015.04.27 - Rarities - Added Henry & Company Coggshall Engineer's Joint Rule, gift of Phillip Rodley, Upperhutt, New Zealand.
  2015.04.27 - Lawrence - Added OEM Lietz model 2976 (Lawrence 10-B ).
  2015.04.27 - United States - Updated image of Lietz model 2976 (Lawrence 10-B).
  2015.04.27 - Rarities - Added(Replaced) Fowler's "Jubilee Magnum" Extra Long Scale Calculator from UK
  2015.04.26 - Rarities - Added 4 foot Dring and Fage Gauging slide rule, gift of Phillip Rodley, Upperhutt, New Zealand.
  2015.04.26 Oughtred Society - Mike Konshak, ISRM Curator, is now on the OS board and is the United States representitive for the OS Awards Committee.
  2015.04.25 - United States - Added two models (1938 and 1943) of D.Van Nostrand Mannheim Type Slide Rules with comparisons. The accompaning book Speed and Fun with Figures will take some time to scan as consists of 3 books and is 600+ pages long. The research on this company took 3-4 days to complete.
  2015.04.24 - Pickett - Added No N-531-ES CREI Round Black Logo, Round CREI Logo, gift of Jay of Washington, D.C.
  2015.04.24 - Acumath - Added(Replaced) No1500 Log Log Decimal Trig, gift of Jay of Washington, D.C.
  2015.04.24 - Holiday - There are other things in life besides slide rules. Back from riding motorcycles in Moab Utah. See www.youtube/c/telerover for videos
  2015.04.17 - Received gift of two slide rules, with photo and bio, belonging to Jay of Washington, D.C.
  
  • 15.04.17.01 - Pickett No.120 white narrow stock.
  • 15.04.17.02 - U.S. Acu-math No.1500 Log Log Decimal Trig.
  2015.04.06.02 - Acquired Lietz model 2976 (Lawrence 10-B).
  2015.04.06.01 - Received gift of Post Versalog 1460,(black COS) slide rule. dc GK (Nov1956) sn711291, gift of Monica Orban, Westby, Wisconsin
  2015.04.03.01/M343 - Acquired D. Van Nostrand Co. Mannheim Slide Rule (clear cursor) with book (1938)(M344) Speed and Fun With Figures by Sloan, Thompson & Licks.(1922). Belonged to Theodore A Ziegler who bought it in 1947. Monica Orban, Wisconsin
  2015.04.03.02/M342 - Acquired D. Van Nostrand Co. Mannheim Slide Rule (magnifying cursor) with book (1938) Speed and Fun With Figures by Sloan, Thompson & Licks.(1922).
  2015.04.03 - Ephemera - Added 4 ads from Popular Mechanics and Popular Science magazines from 1939-1943, D. Van Nostrand Slide Rule.
  2015.04.03 - United States - Added D.Van Nostarnd Circular Slide Rule and Mannheim Type Slide Rule.
  2015.04.03 - United States - Added new manuafacturer's catagory D.Van Nostrand with supporting history.
  2015.04.03 - KE_Standard - Added 4081-3 sn824972 laminated edges. Belonged and used by Gregory J. Patterson (1935-2014) who worked as a mechanical Engineer at Westinghouse. Gifted by son Tim Patterson and family.
  2015.04.02 - Pickett - Added(Replaced) Model No.120 white narrow stock.. Belonged and gifted by Larry Hodes of New Jersey
  2015.04.02 - PIC/Thornton - Added Model No.251. Belonged to Gerard H. Holzrichter (1912-1979) Gift of Larry and Enid (Holzrichter) Hodes, New Jersey
  2015.04.02 - Received gift of two books from Jennie Miller, Dulan Village, Dong He Township, Tartung County, Taiwan
  2015.04.02 - Ephemera - Added photo of a Pipe Smoking Student With Slide Rule. Based on the sleeve the maker is probably a K&E. (found on Etsy)
  2015.04.01 - SR_Library/Catalogs - Added A. Lietz Company catalogs from 1911, 1919 and 1926. Also separated out the slide rule pages.
  2015.04.01 - United States - Added Lietz models 2974N (made by Hemmi and 3625-10 Dial Rule (Pickett 101-C). Ebay photos. Added Lietz logo and links to catalogs.
  2015.04.01 - SR_WhosWho - Added Adolf Lietz (1850-1923) who founded the A. Lietz Company, that manufactured surveying equipment and rebranded slide rules.
  2015.04.01 - United States - Added Lakeside Toys Draft-A-Plan Kit with Pocket slide rule.
  2015.04.01 - SR_Library/USA - Added Drafting For Fun included with Lakeside Toys Draft-A-Plan Kit.
  2015.03.28 - Received a donation from Thomas Hazard, now a Friend of the Museum.
  2015.03.28 - Received 2 slide rules, one used by Larry Hodes (Laurent V. Hodes), and the other by his wife Enid's father Gerard Holzrichter (Thornton). Larry and Enid live in Tacoma Park, Maryland.
  
  • 15.03.28.01 - Pickett No.120 white narrow stock.
  • 15.03.28.02 - Thornton PIC No.251 To gallery
  2015.03.24.01 - Acquired D. Van Nostrand Co. Circular Slide Rule, Copyright 1932. Made of cardboard.
  2015.03.23.01 - Received donation of K&E 4081-3 sn824972 laminated edges. Belonged and used by Gregory J. Patterson (1935-2014) who worked as a mechanical Engineer at Westinghouse. Gifted by son Tim Patterson and family.
  2015.03.21 - Received a donation from Wayne R Pinnow, now a Friend of the Museum.
  2015.03.19.01/M341 - Acquired Lakeside Toys Draft-A-Plan Kit, with Slide Rule (made by Lawrence) and Drafting Tools, Electric Drawing Board and Instructions. From Local Estate.
  2015.03.18.- Military and Circular - Added US Navy Calculator For Vertical Aerial Photography, MIL-C-19729 (Fesenthal).Gift Of Aron Davidson.
  2015.03.18 - Received gift of 2 Aerial Photography slide rules belonging to Gift Of Aron Davidson, New Jersey
  
  • 15.03.18.01 - US_Navy Calculator For Vertical Aerial Photography MIL-C-19729,
  • 15.03.18.02 - Pickett 520-T Aerial Photo Slide Rule.(for adoption)
  • Manual How To Use The U.S. Air Force Aerial Photo Slide Rule. (for adoption)
  2015.03.17 - Rarities - Added Replica of Napier's Bones donated by the German Rechenschieber Sammler Treff (RST) Collector Group and Klaus Kühn.
  2015.03.10 - Pickett - Added pictures of Retail Displays and artwork plates used in production. Photos courtesy of Gary Rourke
  2015.03.10 - Manuals/Ditzgen - Added ISRM_M339 Dietzgen N1725 VectorLogLog Instructions Gift Of David DeSpain
  2015.03.09 - Ephemera/People with slide rules - added 7 new images, including one of donor Phillip Rodley
  2015.03.09 - Military - Added DeYOE Slide Rule, U.S. Army for Artllery Ranging, Scan donated by David Rance collection. Sassenheim, The Netherlands
  2015.03.09 - Lawrence - Added DeYOE Slide Rule, U.S. Army for Artllery Ranging, and updated paper The Unique Lawrence both provided by David Rance collection. Sassenheim, The Netherlands
  2015.03.09 - Dietzgen - Added(Replaced S114) Model N1725 sn130952 Microglide Vector Type Log Log Gift Of David DeSpain, Columbus, Ohio, with b io and photo.
  2015.03.09 - Finished scanning all slide rules waiting in the que. Will now brgan the process of editing and posting the images.
  2015.03.09 - Pickett - Added Pickett N-500-T HI-LogLog RndBlkLogo Gift Of Ed Millis
  2015.03.06.01 - Acquired Fowler's "Jubilee Magnum" Extra Long Scale Calculator from UK
  2015.03.05.01 - Received gift of Dietzgen 1752 20inch Maniphase with all glass cursor. Gift of Edward , Odenton, MD.
  2015.03.04 - Received gift numerous slide rule books and manuals from Edward , Odenton, MD.
  2015.02.28.01 - Hemmi 251 dcDC (1953)- Acquired Post 1462H MIOJ to use cursor for a Hemmi 251. Placed a Ricoh cursor on the Post, and put it up for donation.
  2015.02.27 - Received gift of 2 slide rules belonging to David Barnishin of Columbus, Ohio. David won these slide rules in a poker game in 1960 while a student at Indiana State University in Terre Haute, Indiana. (1957-1961). He majored in Math and Physics.
  
  • 15.02.27.01 - Post 1460 Versalog dcHH (Aug 1957), with hard bound instructions. Put in loaner program.
  • 15.02.27.02 - Pickett 800-T Log Log red and black text, round black logo, square braces. c1959 Replace S066
  2015.02.25.01/M339 - Received gift of Dietzgen N1725 Vector Type Microglide Slide Rule sn130952, in box with manual from David R. DeSpain, P.E.of Fort Worth, Texas. with bio and photo. Gift includes various slide charts.
  2015.02.24.01 - Received gift of K&E Decilon in original box from The Association for NonSmokers in Minnissota which was donated to them by Bernhard Marzell
  2015.02.23.01 - Received gift of 4 foot Dring and Fage Gauging Rule acquired by Phillip Rodley, Upperhutt, New Zealand.
  2015.02.23.02 - Received gift of Henry & Company, Joint Rule acquired by Phillip Rodley, Upperhutt, New Zealand.
  2015.02.18 - SR_WhosWho - Added Murray I. Lieb, Associate Professor of Mathematics at New Jersey Institute of Technology. He edited the Instruction Manuals for Sterling Plastics.
  2015.02.18 - Received gift of personal slide rules from Randy Shrimplin, Okeechobee, Florida.
  
  • 15.02.18.02 - Pickett 101-C with manual. for adoption
  • 15.02.18.01 - Pickett 1010-T Trig Triangle logo, rounded braces, cursor grooves on outside of stock, with manual
  • M340 - 1954 Foirm 165 Pickett Pockett Catalog
  2015.02.01 - Recieved donation from Marnie Shepperd, Arizona, a Friend of the Museum on the anniversary of her father's death. Parker D. Shepperd's slide rule is in the K&E gallery.
  2015.02.07.01 - Received gift of Sterling #694 Decimal Trig Log Log and manual M237 from Bruce Blackstone.
  2015.01.31 - SR_Ephemera - Added German postage stamp commemerating 400 years of logarirthm and John Napier. Courtesy of letter sent by Klaus Kühn
  2015.01.31 - SR_Loaner - Sent 25 slide rules to Dr. Justin Young, Department of Mathematics and Computer Science, Ashland University, Ashland, Ohio.
  2015.01.27 - Visitation, Mike visited George Keane in Festus, Missouri, while on a road trip to the area. George wrote the history on Acu-Rule (Acu-Math) slide rule company which started in his home town. He also supplied the first slide rules for the ISRM Loaner program. George suffers from Parkinson's Disease which makes it difficult for him to use a computer.
  2015.01.25 - Recieved donation from Michael Fink, Australia, now a Friend of the Museum.
  2015.01.23 - SR_Loaner - Sent a variety of 25 slide rules to N V Fitton,Mathematics & Computer Science Northern Virginia Community College, Alexandria, VA
  2015.01.23 - SR_Loaner - Sent 8 slide rules to Sloan Despeaux, Department of Mathematics and Computer Science, Western Carolina University, Cullowhee, NC
  2015.01.14 - Lawrence - Added(Replaced) Lawrence 10-B white back (S386), Lawrence 10-B wood back Full length silkscreen on back New variation., RCA F.M. Coverage Calculator, Gifts of Ed Millis
  2015.01.13 - Post - Added Frederick Post No.1452T, made by Sun Hemmi, c1935. Gift of Ed Millis.
  2015.01.12 - Acumath - Added "Acu-Rule" Universal. Same as Frederick Post 1452-D Universal c1945. Added Letterhead to top of page.
  2015.01.08 - Acumath - Added(Replaced) "Acu-Rule" 10-D w/ magnifying Cursor, Model 50, No 401 Student mannheim, No 1311 LogLog Decimal Trig(S134), NO.500 (S139), No. 600 Basic Trig (S482), No.900 Professional (S136).
  2015.01.08 - Post - Added Frederick Post 1452-D Universal c1945, gift of Ed Millis, Dallas, Texas.
  2015.01.07 - Hemmi - Added No.130W Advanced Darmstadt, No.135 Darmstadt, and No.136 System Darmstadt. Scan provided by Olivier Cassou Collection, France
  2015.01.05 - SR_WhosWho - Added Alex E.S. Green (1920-2014) to gallery.
  2015.01.05.01 - Found undocumented Acumath 401 Student Mannheim Trig. Originally gifted by George Keane as part of slide rule loaner program.
  2015.01.05 - SR_Loaner - Sent 9 Nestler Elemath RS's to David R.(Randy) Sullivan,Senior Instructor, Department of Chemistry and Biochemistry, University of Oregon.
  2015.01.05 - SR_Rescue - Aaron Cowley adopted an Aristo 969.
  2015.01.02 - Scanning new manuals and books
  • ISRM_M335 - DelmarPublishers_TheSlideRuleShortcutToTrigonometry1970
  • ISRM_M336 - RobertBlaaine_TheSlideRule_QuickAndEasy_1907
  • ISRM_M337 - Halsey_TheUseOfTheSlideRule_VanNostrand_1907
  • ISRM_M338 - Saxon_Alexander_TheSlideRule_SelfInstructionProgrammedManual_Prentice-Hall_1966

  ---

  2014.12.26 - SR_Loaner - Sent 25 Aristo 903's to Jane Bryan,South Carolina Governor's School for Science and Math (GSSM), Hartsville, SC. for a seminar taught by John Webb.
  2014.12.15 - Most of December was spent scanning slide rules and manuals. Editing and posting pictures will commence in the next few days.
  2014.12.09.01 - Received gift of Deitzgen 1767 National with wrapped cursor from Janet L. Dubane of Barnegat, NJ
  2014.11.18 - Ephemera - Added photos of Alameda Naval Air Station Lapel Pin and a 'Man Cave' with Giant Slide Rule.
  2014.11.17 - Japan - Added Jakar 11 Pocket Rietz. Gifts Of Edward
  2014.11.17 - Nordic - Added UTO No. 601 w/Yellow Slide. Diwa 601 Rietz V1. Gifts Of Edward
  2014.11.17 - Pickett - Added Pickett 160-ES Made in Mexico variant, N600-T LogLog in Apollo box. Gifts Of Edward
  2014.11.17 - MiscJapan - Added Jakar pocket Mannheim (no model number) with sleeve. Gift Of Edward
  2014.11.17 - Sterling - Added Sterling 594 Decimal Trig Log-Log (FontVariant) and sleeve with model number on it. Gift Of Edward
  2014.11.16 - KE_Standard - Added 4088-3 belonging to Merle H. (Mike) Walker (1911-2013) who was one of the most important gun and cartridge designers of the 20th Century. Gifted by his daughter Janet Walker DuBane.
  2014.11.16 - SR_Library/Europe - Added Aristo Scholar Instructions ©1958 for Models 0903, 0903LL, 0903 VS, 0903 VS-2. Gift Of Edward , Odenton, Maryland
  2014.11.15 - SR_Library/Books - Added M322 The Slide Rule for Ships Officers 1949 by J.C. Podmore. Gift of Phillip Rodley.
  By T.G.C. Ward and G.W. Blakely. Gift of Phillip Rodley.
  2014.11.15 - SR_Library/Books - Added M314 The Slide Rule for Students of Science and Engineering 1955 By T.G.C. Ward and G.W. Blakely. Gift of Phillip Rodley.
  English Universities Press
  2014.11.15 - SR_Library/Dietzgen - Added M323 Dietzgen Maniphase (for 1767 National) Instructions. Gift of Phillip Rodley.
  2014.11.15 - SR_Library/Japan - Added M324 Sun Hemmi Bamboo Slide Rule 1947. Gift of Phillip Rodley.
  2014.11.15 - SR_Library/Japan - Added M328 Hemmi 153 Electrical Universal Instructions and M325 Hemmi 153 Special Scales Instructions. Gift Of Edward
  2014.11.15 - SR_Library/British - Added M318 Boots Ringplan 10inch Slide Rule Instructions.Gift Of Edward , Odenton, Maryland
  2014.11.15 - Relay/Ricoh - Added placeholders for Lutz Models 151, 153, and 551
  2014.11.15 - SR_Library/Japan - Added M317 Lutz Models 151, 153, 252, 551 Instructions. Gift Of Edward , Odenton, Maryland
  2014.11.14 - SR_Library/British - Added M331 Unique "Half-Hour" Slide Rule Instructions.
  2014.11.12 - SR_Library/Pickett - Added M320 Pickett N525-T Stat-Rule Instructions. Gift Of Edward , Odenton, Maryland
  2014.11.12 - Nestler - Added Nestler 11E Electro,(missing cursor). Gift Of Edward , Odenton, Maryland
  2014.11.12 - SR_Home - Added banner on the 100th anniversary ofthe completion of the Panama Canal in 1914, designed using K&E slide rules.
  2014.11.12 - SR_Library/Books - Added book Slide Rule in Electronics John Carper ©1967 by Howard Sams. Scan Donated By Steven Decker
  2014.11.12 - SR_Terms/Encyclopedia - Added entry for John MacInnes Slide Rule Award (Scholastic Achievement) Named for John MacInnes (1925 -1983) who coached the Michigan Tech Huskies for 26 seasons.
  2014.11.11 - SR_Library/Catalog - Added 1968 Pickett Slide Rule Catalog at top of page, Scan Donated By Steven Decker
  2014.11.11 - Pickett - Added 1968 Pickett Slide Rule Catalog at top of page, Scan Donated By Steven Decker
  2014.11.11 - Unique - Added Unique Log Log, Original Owner: H.G. Millhouse, UK.
  2014.11.11 - Faber - Added A.W. Faber "Castell" 360 (English) dc3-3 (1903) Original Owner: H.G. Millhouse, UK.
  2014.11.10.01 - Received Parisan Novelty Co. Cost And Selling Price Indicator c1950
  2014.11.07.01 - Recieved gift of K&E 4088-3 belonging to Merle (Mike) Walker inventor and Remington Arms, by daughter Janet L. Dubane of Barnegat, NJ.
  2014.11.06 - Military - Added N520-T U.S.A.F. Aerial Photo slide rule Type-A1, aluminum stock, in box. Gift of Phillip Rodley.
  2014.11.06 - Pickett - Added N520-T U.S.A.F. Aerial Photo slide rule Type-A1, aluminum stock, in box. Gift of Phillip Rodley.
  2014.11.06 - SR_Menu - Added Brands: Davis Instruments, Hewig, and Parisan Novelty
  2014.11.06 - United States/Parisan Novelty - Added Pocket Slide Rule patent US2073421, gift of Ed Millis, Dallas, Texas and Added Davis Instruments Time-Speed-Distance Computer, Gift of Ed G. .
  2014.11.06 - Circular - Added Davis Instruments Time-Speed-Distance Computer, Gift of Ed G. .
  2014.11.06 - Patents/US - Added US002450668 CALCULATOR inventor E.G. Kesling 1948, found on Addiator page, and US2073421 RULE inventor Joseph Komorous of Parisan Novelty Co. found on United States gallery.
  2014.11.06 - Addiators - Reformated page. Copied 3 Faber Castell slide rules with addiators on back to this gallery. Added bio and pictures of Shell Thuet to Kesling Pocket Adder and patent.
  . 2014.11.05 - Addiators - Added Hewig Graphic Calculator, Edward T. of Odenton, Maryland. Copied Sterling adding machines to this gallery.
  2014.11.05 - United States/C-thru - Added C-Thru PS-69 Proportional Scale 5in dia, gift of Phillip Rodley, Upper Hutt, NZ.
  2014.11.05 - Circular - Corrected broken link to Dalton Dead Reckoning Computer, Added C-Thru PS-69 Proportional Scale 5in dia, gift of Phillip Rodley, Upper Hutt, NZ.
  2014.11.05 - Italy - Added Hono-Rietz 300 No1 promoTRIULZ. Gift Of Edward T. Wright, Odento, Maryland
  2014.11.05 - Sterling - Added(Replaced) 568 6-Digit Dial-A-Matic Automatic Adding Machine (REF). Gift of Ed
  2014.11.05 - Aristo - Added(Repaced) 0970 Multi-Log Charvoz(S064) dc65-4 (1964). Gifts of Ed
  2014.11.04 - Aristo - Added(Repaced) 0903LL Scholar dc9 variant, Aristo 905 Shut-Commerz 1962 (S546), 0903LL VS-2 Scholar dcG6136. Gifts of Ed
  2014.11.04 - SR_Library/Japan - Added Lutz (Ricoh) Models No. 151, 153, 252, 551 instructions. Gift of Ed
  2014.11.04 - SR_Library/Russia/China - Added Flying Fish 1003 and Flying Fish 1018 manuals. Gifts of Ed
  2014.11.04.01/M330 - Received Pickett N520-T USAF Aerial Photo Slide Rule NIB c1951, with instructions. Gift of Phillip Rodley, Upperhutt, New Zealand.
  2014.11.03 - SR_Loaner - Sent 25 Fedras to Prof. Jorge Nuno Silva of the Museu de Ciência in Lisboa, Portugal for the Associação Ludus math teacher program.
  2014.11.03 - SR_Rescue/Fundraiser - Sent two slide rules, adopted by T. Kirkpatrick of Safe Harbor, Florida.
  2014.11.02 - K&E_Specialty - Corrected scale description on K&E 4133 Roylance entries (back scale was 25cm s/b 20.5cm). Thanks to Philip Stanley.
  2014.10.29 - Orient - Added(replaced) Flying Fish 1003 Vector (S557) c1978, Flying Fish 1015 Vector c1975. Flying Fish 1018 Electrical. Gifts Of Edward , Odenton, Maryland.
  2014.10.29 - Dietzgen - Added(Replaced) Dietzgen 1767P National (S001 - note: first slide rule scanned at ISRM in 2003). Gift Of Edward , Odenton, Maryland.
  2014.10.29 - Faber - Added 1/22 Business Slide Rule dc 11-59 Gift of Phillip Rodley, Upperhutt, New Zealand
  2014.10.29 - Library/Euro - Added 52-82 "Duplo" D-Stab Student Biplex Instructions. Gift Of Edward , Odenton, Maryland.
  2014.10.29 - Faber - Added(Replaced) Faber 52/81 Novo-Mentor (S260) dc9-70, 52-82 D-Stab (S003) with Instructions. Gifts Of Edward , Odenton, Maryland.
  2014.10.28 - Faber - AW_Faber 1/87 Rietz dc5-54. Gift Of Phillip Rodley,
  2014.10.21 - Acumath - Added Mid-Continent Spring Co. Spring Design Slide Rule- c1950
  2014.10.21 - Dietzgen - Added(Replaced) 1734 sn114559 Decimal Trig Log Log (12.06.06.24 sn056181). Owned by former POW SSGT Robert Chicca of the USS Pueblo Incident in North Korea in 1968. with authentication. Gift of Edward of Odenton, Maryland.
  2014.10.20 - K&E Standard - Added K&E 4090-3 Log Log Duplex Trig 1936 S/N 492569 Owned by Victor H. Hodge, with references from McCoys K&E Catalo. Gift of Edward .
  2014.10.17.01 - Acquired Mid-Continent Spring Co. Spring Design Slide Rule.
  2014.10.17 - FundRaiser/Slide Rule Adoption - ISRM currently has 219 slide rules available for adoption.
  2014.10.17 - Hemmi - Added(Replaced) Hemmi 153 Electrical pre-WWII no dc. Gift of Ed . Hemmi 259 dcJK Mechanical Engineer.(S002).
  2014.10.17 - SR_Library/Japan - Added Lafayette 99-7128 Decima-Dyne Instructions. Hemmi 153 and Special Scale Instructions. Gifts of Ed
  2014.10.17 - Ricoh - Added(Replaced) Lafayette 99-7128 Decima-Dyne(Archive) Gift of Edward . Relay 403 Gift of Phillip Rodley.
  2014.10.16 - Australia/NZ - Added two brand catagories from New Zealand disc and slide chart Makers. Added Winston Concrete Block Calculator and Industrial Models Dimension Dial, Gifts of Phillip Rodley.
  2014.10.16 - Australia - Added(Replace) W&G 432 Dual Face Comprehensive Slide Rule (S234). Gift of Phillip Rodley.
  2014.10.16 - Library/Pickett - Added ISRM M329 Pickett How To Use Log Log Slide Rules N800, N803, N300,N600,N4. Gift of Ed Millis, Dallas, Texas.
  2014.10.16 - Pickett - Added(Replaced) Model N803-ES with Manual. Gifts of Edward Millis of Dallas, Texas.
  2014.10.16 - Pickett - Added(Replaced) Model 2 Magnesium leather sleeve (S165) sn3D07552, 120-ES Marked "Made in Mexico" V2 Italic Inverse Scales.. N-525-T StatRule, N904-T Decimal Keeper (S476). Gifts of Edward T. of Odenton, Maryland.
  2014.10.16 - Aerospace - Added(Replaced) Model 100 Douglas Sky Rule rounded braces. (Replaced Steve Treadwell scan). Gift of Ed Millis, Dallas, TX
  2014.10.15 - Received gifts of slide rules from Edward T. of Odenton, Maryland. The following are New Additions:
  • 14.10.15.01 - Dietzgen 1734 sn114559 Decimal Trig Log Log. Owned by former POW SSGT Robert Chicca of the USS Pueblo Incident in North Korea in 1968. with authentication.
    
  • 14.10.15.02 - K&E 4090-3 sn 492589 with Magnifying cursor.
  • 14.10.15.03 - Pickett N600-T in Apollo box. stains on SR from leather sleeve.
  • 14.10.15.04 - Jakar 11 Pocket Mannheim with leather sleeve.
  • 14.10.15.05 - UTO. No. 601 Pocket Mannheim with leather sleeve PromoCompany:NORTH
  • 14.10.15.06 - Diwa Pocket Rietz dc276 with leather sleeve PromoCompany: ITT Canon Electric
  2014.10.15 - Pickett - Added(Replaced) Model 100 Douglas Sky Rule rounded braces. (Replaced Steve Treadwell scan). Gift of Ed Millis, Dallas, TX
  2014.10.15 - Aerospace - Added BRL N52 Aviation Slide Rule, (duplicate entry) gift of Phillip Rodley of UpperHutt, New Zealand.
  2014.10.15 - Blundell/BRL - Added BRL N52 Aviation Slide Rule, gift of Phillip Rodley of UpperHutt, New Zealand.
  2014.10.15 - SR_WhosWho - Added Edward T. , Ph.D of Odenton, Maryland.
  2014.10.15 - K&E - Added(Replaced) 68-1210 Log Log Duplex Decitrig (S483) sn930120 with photo and bio of Edward T. of Odenton, Maryland.
  2014.10.14 - Formatted images from 150 scans of 34 slide rules, and 417 scanned pages for 14 books and manuals to be added to galleries, to begin posting tomorrow.
  2014.10.14.03 - Acquired Alameda Naval Air Station Engineer's Pin (has slide rule in artwork.
  2014.10.14.02 - Acquired Faber 360 out of UK.
  2014.10.14.01 - Acquired Unique Log Log Slide Rule out of UK.
  2014.10.11 - ISRM was contacted by David O'Conner, after Ebay was contacted. He willingly pulled the Ebay listing #181545576880.
  2014.10.11 - Discovered that a David O'Conner in England under the eBay handle of Newintentions, is selling the contents of the ISRM library on DVD as his own work as listiing #181545576880. This is a slap in the face of all those who have contributed their time and efforts in building the Library. If you bought one of these, please let us know.
  2014.10.11.04 - K&E N9081-3 Doric S/N 34284 black leatherette sleeve, for adoption
  2014.10.11.03 - K&E N9081-3 Doric S/N 21654 brown leatherette sleeve, for adoption
  2014.10.11.02.X - Obtained Sun Hemmi 259 For Expert Mechanical Engineer
  2014.10.11.01 - Received gift of E.TATA pocket slide rule from Nan Propper of Succasunna, New Jersey.
  2014.10.11 - Received gifts of slide rule books and manual from Edward T. of Odenton, Maryland.
  2014.10.10 - Spent the last two days scanning slide rules donated by Phillip Rodley, Ed and Ed Millis on new scanner. Received setup guidance from supporter Steve Seals who recommended this model.
  2014.10.09 - Received gifts of slide rules from Edward T. Wright of Odenton, Maryland. The following are New Additions:
  • 14.10.09.01/M326 - Flying Fish 1003 Vector Hyperbolic in Green Cardboard sleeve with instructions.
  • 14.10.09.02/M327 - Flying Fish 1015 Vector Hyperbolic in Grey Plastic sleeve with instructions.
  • 14.10.09.03/M - Flying Fish 1018 Electricians slide rule in Grey Plastic sleeve.
  • 14.10.09.05/M328/M325 - Hemmi 153 Electrical. pre or during WWII with instructions.
  • 14.10.09.06/M320 - Pickett N-525-T Stat Rule in Original Retail Box NOS with instructions
  • 14.10.09.07 - Parisan Novelty Co. Pocket slide rule with elecrical helps in well. Dittman and Greer Promo.
  • 14.10.09.08 - K&E 68-1210 Log Log Duplex Decitrig sn930120 (Replace S483)
  • 14.10.09.09/M319 - Faber-Castell 52/82 D-Stab Biplex in Retail box with instructions (Replace S003)
  • 14.10.09.04 - Faber-Castell 52/81 Novo-Mentor in Grey plastic sleeve (Replace S260 )
  • M321 - Lafayette 99-7128 Instructions
  • M318 - Boots Ringplan Instructions
  • M317 - Lutz 151, 153, 252, 551 Instruction
  • M316 - Aristo 0903, 0903LL, 0903VS, 0903VS-2 Instructions
  • 14.10.09.10 - Pickett Microline 160-ES Student, Black naugahyde sleeve. Made in Mexico
  • 14.10.09.11 - Hono-Rietz 300 No1 promoTRIULZ.
    
  2014.10.07 - SR_Loaner - Sent 30 Acumath 400's to Jim Hus, Highland High School, Highland, Indiana.
  2014.10.07.01 - Obtained a Makeba-Kombinator slide rule pencil from Riga, Latvia.
  2014.10.06 - SR_Menu - Added Brands Clemenston and Hono-Rietz
  2014.10.06 - Added (replaced) K&E 4108 Military Slide Rule (American Blueprint) c1950, with photo and bio of donor, Edward of Odenton, MD
  2014.10.06 - Dietzgen - Added Dietzgen N1732 Micromatic Trigonometric Log Log s/n 585550 with photo and bio of donor, Edward of Odenton, MD
  2014.10.05 - Faber - Added Faber-Castell 111/66 Demegraph System Schirmer Typesetter's Rule. Gift Of Phillip Rodley, NZ
  2014.10.05 - Sterling - Added additional photos to Sterling 539 pocket rule. Heretofore we did not know the model number. Photo couertesy of B Potratz.
  2014.10.05 - Pickett - Added(Replaced) N902-ES Simplex Trig (ISRM 11.11.21.01) with bio and photo of Jeanette Lyon, Myrtle Beach, Florida.
  2014.10.05 - K&E - Added K&E 4081-5 Log Log Duplex DeciTrig - S/N 766300 and Jesse (bud) Lyon photo and Bio. Gifted by his wife Jeannette Lyon, Myrtle Beach, Florida, in memory of her husband, Bud.
  2014.10.05 - Dietzgen - Added N1731 Micromatic Trigonometric Log Log s/n 084303. Gift of Ed Millis Collection.
  2014.10.06 - Military - Added duplicate entry of "Sun" Type98 Manuevering Slide Rule 1938 (Japanese year 2598), including picture of the Japanese Battleship Yamato, Translations by Jiro Higuchi. Gift of Phillip Rodley, Upperhutt NZ
  2014.10.06 - Hemmi - Added backgtound information on "Sun" Type98 Manuevering Slide Rule 1938 (Japanese year 2598), including picture of the Japanese Battleship Yamato, Translations by Jiro Higuchi.
  2014.10.03.01 - Dietzgen - An undocumented Maniphase Model 1735 Vector sn 104674 was found while rumaging through the archives. It has a newer framed cursor that should be for the wider (1-3/4" vs 1-5/8") stock Micromatic series. A K&E cursor is a better fit. Found a Dietzgen cursor for it.
  2014.10.03 - Received a new Plustek OpticPro A320 large format CCD scanner to replace an aging HP4C Legal scanner attached to an XP computer. Neither are supported anymore. Setup and trial run set for today. This was made possible by the generous donations of ISRM supporters.
  2014.10.02 - United Kingdom - Added Clemenston Steam Pipe Sizing Slide Rule. Gift of Phillip Rodley, Upperhutt New Zealand
  2014.10.02 - France - Added Tavernier-Gravet c1910, Made in France - Rue Mayet 19, Paris. Gift of Phillip Rodley, Upperhutt New Zealand
  2014.10.02 - Hemmi - Added "Sun" Type98 Movement (like an Dalton Navigation Computer) 1938 (Japanese year 2598). Gift of Phillip Rodley, Upperhutt New Zealand
  2014.10.02 - SR_Terms/Encyclopedia - Added Belcher & Sons history.
  2014.10.02 - SR_WhosWho - Added Thomas Belcher, rule maker in New York from , who produced the Gunter Rule in the ISRM Rarities Gallery.
  2014.10.01 - Post - Added Post 1460 Versalog - S/N 831572 in Retail Box. Gifted by Bill Geren of Dallas, Texas.
  2014.10.01 - HSRC Catalogue - Added Text only list of Herman's Slide Rule Catalogue containing 4,224 specimens,
  2014.09.30 - Slide Rule Rescue - Lee Scott adopted a slide rule.
  2014.09.30 - SR_Loaner - Sent slide rules to Sister Paula Irving of the Community of Jesus, Orleans, MA.
  2014.09.30 - Japan - Added E.TATA category. two examples known.
  2014.09.30 - Acumath - Added(replaced) Model 500 Square braces c1968 (S137). Gift of Huang Collection.
  2014.09.30 - SR_Library/Euro - Added Faber-Castell 1-87A System Rietz with Addiator Instructions (English) (M313), AW Faber 375/361 Instructions. (M311). Faber-Castell 1/28 Super-Business Instructions (M312). All gifts of Phillip Rodley
  2014.09.29 - Curator is back in the building! (after a two week hiatus. Time to catch up om scanning.
  2014.09.25 - Received gifts of very rare slide rules acquired by Phillip Rodley, Upperhutt New Zealand
  • 14.09.25.01 - "Sun" Mariner's Navigation Rule cWWII. Labels in Japanese.
  • 14.09.25.02 - The Clemenston Steam Pipe Sizing Slide Rule. S.P.Clemenston, 17 Buckingham St., Strand, London, W.C.2
  • 14.09.25.03 - Tavernier Gravet Rue Mayet 19l Paris. Equivalents in French.
  2014.09.22 - SR_WhosWho - updated Karl Klein's photo and bio. Updated David Sweetman's bio. Both recipients of the 2014 Oughtred Award.
  2014.09.17.02 - Received gift of Pickett N902-ES slide rule belonging to and used by Jeanette Lyon, Myrtle Beach, Florida. Will replace ISRM 11.11.21.01
  2014.09.17.01 - Received gift of K&E N4081-5 sn766300 slide rule belonging to and used by Jesse (Bud) Blount Lyon, II, Myrtle Beach, Florida. Need snew cursor blocks.
  2014.09.14 - SR_WhosWho - Added Jerry Merryman, co-inventor of the first pocket calculator at Texas Intruments.
  2014.09.21 - Received gifts of slide rule from Edward T. Wright of Odenton, Maryland. The following are New Additions:
  • 14.09.21.01 - Lafayette 99-7128 dcO.S-1, Decima-Dyne with leather sleeve
  • 14.09.21.02 - K&E 4139 Cook Radio Rule sn936496. Marked RMS 652. Has KERCS. Brown sleeve, no flap.Restored cursor
  • 14.09.21.03 - Dietzgen N1732 sn585550 Decimal Maniphase Multiplex Trig Type Log Log Rule, in box, no sleeve.
  • 14.09.21.04 - K&E 4108 U.S. Military Slide Rule, American Blueprint Co. NY
  • 14.09.21.05 - Aristo (Charvoz) Nr.0970 dc654, Dark Brown Leather sleeve (shrunk, so that the slide rule will not fit) Add to gallery, does not have yellow strips.
  • 14.09.21.06 - Pickett 120-ES Marked "Made in Mexico" (variant) V2 Italic Inverse Scales.
  • 14.09.21.07 - Dietzgen 1767P National. Replace S001 (this was the first SR scanned) Replace entry with Lisowski
  • 14.09.21.08 - Hewig Company, New York - Graphic Calculator - for Addition and Subtraction
  • 14.09.21.09 - Nestler 11E Electro pocket, missing cursor
  2014.09.19 - SR_Adoption - Phil Simich and Beth Lander (for daughter Sarah Lander) both adopted slide rules from ISRM's Slide-Rule-Rescue program
  2014.09.18 - Received Gift from Fred Astren
  2014.09.08 - Received The Slide Rule Technical Cultural Heritage by IJzebrand Schuitema, a reprint from the Oughtred Society for the ISRM research library,
  2014.09.08 - Received gift of slide rules from Edward T. of Odenton, Maryland. The following are New Additions:
  • 14.09.08.01 - Pickett N904-T Trig and Decimal Keeper Speed Rule in retail box (Replace S476)
  • 14.09.08.02 - Pickett Model 2 Magnesium leather sleeve (replace S165)
  • 14.09.08.03 - Hono 300 No.1 Rietz with red cardboard sleeve (add more specimens from HSRC)
  • 14.09.08.04 - Aristo 0903LL Scholar dc9 slight variant
  • 14.09.08.05 - Aristo Nr.0905 Shut-Commerz (Commerce) snG6233 (replace S546)
  • 14.09.08.06/M316 - Aristo 0903 VS-2 Scholar dc G6136 grey.Cardboard sleeve marked Keith A.C.Wilson. with manual.
  • 14.09.08.07 - Sterling 569? 6-Digit Dial-A-Matic Automatic Adding Machine
  2014.09.08 - KE_Standard - Corrected scale set on K&E 4081-3 S/N 717411 (1952) ISRM 13.08.27.01 No 'DI' scale.
  2014.08.17 - Received Gifts from Philippe Deau of France , Michael Mjelde , Roi Gift of Washington, John Cadick of Texas , Walter Davis of Nevada , Thomas Yorker of New York . Richard Rose of Ohio , David Walker of the United Kingdom , Kent Berglund of Illinois
  2014.08.17 - Maintenance - Rod Lovett did an analysis of sliderulemuseum.com and found many bad URLs. 303 out of 22965 links were found to be broken. ISRM is HUGE! These will be on the list of many things to do. Thanks, Rod.
  
  • 22965 URLs checked
  • 22662 good URLs found
  • 303 bad URLs found
  2014.08.14 - Received Gift from Nick Strauss of Washington
  2014.08.14 - SR_Library - Removed the block preventing downloads during the fund raiser. Kids are going back to school so it needs to be available for research.
  2014.08.08 - Received Gift from John Webb
  2014.08.05 - Received Gift from Perkunas Kavolis .
  2014.07.29 - Germany - Added new manufacturer's catagory "Norma". Added three specimens from the Rod Lovette (UK) and Hubert van Dongen (NL) collection.
  2014.07.28 - Received Gift from Phillip Simicich, Indiana, Laurie Emery, Iowa , James Enterline ..and Richard Burns .
  2014.07.26 - I lost this page and had to recover it from the server. OUCH!
  2014.07.22 - Received donation of slide rules from Phil Rodley from around New Zealand, all acquired at his expense.
  
  • 14.07.22.01 - W&G Model 432 Dual Face Comprehensive Slide Rule with black cardboard sleeve.
  • 14.07.22.02 - W&G "Douglas" Combined Protractor and Parallel Rule
  • 14.07.22.03 - BRL N52 Aviators slide rule with Blue cardboard sleeve.
  • 14.07.22.04 - Faber Castell 111/66 Demegraph System Schirmer in clear hard case
  • 14.07.22.05 - Faber Castell 1/87 Reitz dc 5-54 (May 1954)
  • 14.07.22.06 - Faber Castell 1/22 Business Slide Rule dc11-59 in repaired hard plastic case.
  • 14.07.22.07 - Relay Model No.403 pocket slide rule dcDK-3
  • 14.07.22.08 - Industrial Models, Wellington, NZ.Dimension Dial For Illustrators.
  • 14.07.22.09 - C-Thru PS69 Proportional Scale, USA
  • 14.07.22.10 - Concrete Volume/Block Calculator/Computer. Promo:Winstone, Blackburne Smith LTD.
  • M322 - The Slide Rule For Ship's Officer by J.C.Podmore 1949 Reprint with plastic protractor.
  • Mxx - Murby's Science Series Arithmetic of Electrical Measurements by W.R.P. Hobbs, RN, A.L.E.E. 1905
  2014.07.18 - Received Gift from Phil Rodley in Upperhutt, NZ. a Friend of the Museum.
  2014.07.17 - Ephemera - Added photo of TI engineer Ed Millis whic shows a slide rule on his desk.
  2014.07.17 - SR WhosWho - Added entry and photo of TI electrical engineer Ed Millis, who donated his slide rule collection to ISRM.
  2014.07.15 - Added(Replaced) Dietzgen 1776 Redirule Pocket Duplex (P042), gift of Ed Millis, Dallas, Texas.
  2014.07.15. - Aristo - Added reference article from the Journal of the Oughtred Society Vol 6.1: DENNERT & PAPE and ARISTO Slide Rules 1872 - 1978
  2014.07.13 - Pickett Replaced several entries and created placeholders for new additions from Ed Millis Collection.
  2014.07.12 - 2014 Fund Raiser - Temporarily Disabled manual downloads until goals are reached
  2014.07.10 - Received donation from John Pattinson, now a Friend of the Museum.
  2014.07.04.01 - Handed a Post 1450 Versatrig dcTD (April 1969) at an Independance day celebration for donation to ISRM. Found in an old house in Denver. Replaces S335.By neighbor of Kevin Owen and Lavan Sayed.
  2014.07.03.XX - Items for adoption.
  
  • 14.07.03.01 Post 1460 Versalog, no SN, dcCK Nov 1952, Black COS,Label San Angelo College
  • 14.07.03.32 Picket 1010-T Magnesium round braces, slotted stock,triangle logo
  • 14.07.03.48 Pickett N3-ES with manual
  • 14.07.03.12 K&E 4081-3 mahagony edges scrap
  • 14.07.03.72 UTO 601 Mannheim Buffalo Forge Promo
  2014.07.02 - Received 4 boxes of donated slide rules, electronic calculators, Slide Charts, Books, Manuals and ephemera from the collection of Ed Millis, Dallas, Texas.
  
  • 14.07.02.01 - The Technical Aeronautical Slide Rule, British Made
  • 14.07.02.02 - Concise No.28 with Instructions and sleeve.Textool Products Promo on sleeve.
  • 14.07.02.03 - Rockwell-Standard Spring Calculator 1968 Col-Q-Lator slide chart
  • 14.07.02.04 - Westab "Time Saver" Circular Slide Rule with reference tables.©1965
  • 14.07.02.05 - C-Thru S-94 4-1/2 inch diameter circular slide rule
  • 14.07.02.06/M382 - Concise No.32 keyfob circular slide rule with perpetual calenders w/inst. Replace C07)
  • 14.07.02.07 - Charles Bruning 2401 w/Texas Instrument Logo
  • 14.07.02.08 - Unique Ten-Twenty Slide Rule, Made in Emgland with poem about coal-tar
  • 14.07.02.09 - Hemmi 200 16" 400mm Precision Duplex. (Originally known as "Ultra accuracy.") slide rule, logo on slide, no model number c1937-41
  • 14.07.02.10 - K&E N-4100 stadia sn623559 (metal framed cursor) 1925-1960 scale set#4
  • 14.07.02.11 - National Semiconductor 4660 (slide rule) claculator w/manual needs 3 new AAA nicads.
  • 14.07.02.12 - Dalton Dead Reckoning Computer - Type E6B AN-5835-1 Made by Felsenthal & Sons (Black Aluminum)
  • 14.07.02.13 - Dalton Dead Reckoning Computer - Type Spec 94-27892, Made by Felsenthal & Sons - Steel, US Army Air Forces
  • 14.07.02.14 - Dalton Dead Reckoning Computer - Type E6B AN-5835-1 Made by Weems White Plastic
  • 14.07.02.15 - Batori USA, Navigational/Vector Computer. B-23, Type Made in Switzerland
  • 14.07.02.16 - Dalton Dead Reckoning Computer - Type E6B Spec 94-27892, Made by Stanley Manufacturing - Steel, US Army Air Forces
  • 14.07.02.17 - Pickett No.106C Proportional Scale - 14.6cm dia on retail card (replaces REF)
  • 14.07.02.18 - Slide-Chart Corp. 15" Circular Slide Rule (1964) Litton Industries Promo. (add with SCA 1972 version)
  • 14.07.02.19/M - 12" Graphical Firing Table, M24 Rule No.3, with TM 9-524 Manual
  • 14.07.02.20 - K&E N4053-5 20 inch Polyphase Mannhiem - S/N 352984 c1947, New improved cursor. Cardboard Sleeve. Top Marks: FarLeft[Keuffel&Esser CO.NY] + FarRight[PAT.1,934,232 MADE IN USA]. Scale Labels on left, Model# on right of slide.
  • 14.07.02.21 - K&E N4053-5 20 inch Polyphase Mannhiem - S/N 375208 c1932, Missing Cursor s/b all-glass with reinforced blocks. Top Marks: + [PAT.June 5, 1900] +[Keuffel&Esser CO.NY] + [MADE IN USA]. Scale Labels on left, Model# on right of slide.
  • 14.07.02.22 - K&E 4051-5 Lot 179 (1915) with all glass cursor w/ metal bars
  • 14.07.02.23 - K&E N4053-5 sn998801 (1942) all glass cursor (s/b New Improved after 1936). Leather sleeve. Top Marks: [Keuffel&Esser CO.NY] + [PAT.1,934,232] + [MADE IN USA]. Scale Labels on left, Model# on right of slide.
  • 14.07.02.24 - K&E 4041 Lot36 All glass cursor cardboard sleeve.
  • 14.07.02.25 - K&E 4035 8inch All glass cursor leather sleeve. Pat.June 5, 1900 mark located in well. no sn, lot #2.
  • 14.07.02.26 - K&E N4088-5 sn545519 w/KERCS. c1938. Intact leather sleeve. Patent number [Pat.1,930,852] c1938 marked rather than patent date [June 5, 1900] c1936. This makes it a newer date,
  • 14.07.02.27 - Pickett 903-T Trig Conversion slide rule. c1953, Rounded braces, grooved stock, Triangle logo,
  • 14.07.02.28 - Globe Aircraft Specialties Airlines Computer Model D.Copyright 1946. Rear disk is cracked and repaired with tape.
  • 14.07.02.29 - Aeronav Private Pilots Flight Calculator Model I. Mfg. by Whitehead & Hoag Co. Newark, NJ.
  • 14.07.02.30 - Water Line Capacity Slide Rule. Copyright 1944&1971 by B.F. Grizzle in Black mock alligator sleeve.
  • 14.07.02.31 - Teledyne Post No.1410 dcUC Mar.1970 (same as Hemmi P281) in blue and grey hard plastic .
  • 14.07.02.32 - AW Faber-Castell 1/60 dcJune1940 in cardboard sleeve. with metal framed cursor.
  • 14.07.02.33 - Dietzgen 1735 Vector Maniphase Multiplex. sn111567. Add to gallery.
  • 14.07.02.34/M377 - Globemaster 62205 Plastic slide rule w/instructions
  • 14.07.02.35 - Pickett Model 800 - Log Log Duplex, sn11H1641 - 1945-1950 (replace S220)
  • 14.07.02.36 - Lawrence RCA F.M. Coverage Calculator, Made by Lawrence Engineering, Peru, Indiana.
  • 14.07.02.37 - K&E 4058C Beginner's Slide Rule (Replace S478) Belonged to student Walter Sussman
  • 14.07.02.38 - K&E N4053-3 sn61784 All Glass Cursor c1924, Patent mark June 5,1900. Black cardboard sleeve, missing flap.
  • 14.07.02.39 - K&E 4093-3 Log Log Duplex Vector sn520441 Replace S263 (has KERCS use cursor from K&E4080-3 sn404269)
  • 14.07.02.40 - K&E 4058C V2 Beginner's slide rule (variant printing of equivalents tables). In pristine cardbaord case.
  • 14.07.02.41/M04 - K&E 4056 Favorite Trademark Slide Rule sn818452 w/ black cardboard case. Replace S053. Manuals: Elementary Instructions (for 4058W)
  • 14.07.02.42 - K&E 4088-3 Duplex All-Glass Cursor (two chipped corners) sn70104 Has Times Romas Font scale labels. Intact Leather sleeve. Name: J.Edward. Jennings '27. Replace S438.
  • 14.07.02.44 - K&E 4083-3 Log Log Duplex Vector sn833117 ST scale. 1954-1956 scale set. Inlaid Laminated edges. Intact leather sleeve. Used for ISRM 18.004.06.17 Belonged to Claude Ellis Johnson (1918-2003) NASA Engineer, Huntsville, Alabama.
  • 14.07.02.45 - K&E 4071-3 Polyphase Duplex Decitrig sn596150. One cursor block has KERCS. In black cardboard case. Replace S304
  • 14.07.02.46 - Pickett C-18-T Collins Microwave Transmission Dual Base Log Log Speed Rule. Red Leather sleeve. Name: L.Claunch. Replace REF.
  • 14.07.02.47 - Post (Hemmi) 1452T Pre-WWII with Quot aids. Made in Japan. No date code. No back equivalents label.
  • 14.07.02.48/Mxx - Post (Acu-Rule, Festus, Missouri.) 1452-D Universal. WWII era. Plastic cursor. Made in USA. With retail box, red naugahyde sleeve. With Manual. Replace S023
  • 14.07.02.49 - Acu-Rule Mannheim (Same as Post 1452-D Unversal) Generic marking.Plastic cursor. WWII Era.
  • 14.07.02.50 - Acu-Math 500 Duplex Trig. Metal Braces. Molded plastic cursor. Oval Logo. c1960. Brown Naugahyde sleeve. Replace S139
  • 14.07.02.51 - Acu-Math 900 Professional Mannheim Trig. Plastic stock. Metal Braces. Plastic two sided cursor. Red Oval Logo. c1955. Tan Naugahyde sleeve. Add new entry.
  • 14.07.02.52 - Acu-math 1311 - Duplex Log Log Decimal Trig-c1950 Celluloid laminated wood stock. Single sided braces. Two sided cursor. Missing screw.
  • 14.07.02.53 - Acu-math 600 Basic Trig - c1955 All plastic stock. Tan sleeve. Written on sleeve: Texas A&A. Inside flap: "Don't steal me, my owner is flunking Chemistry". Charles Middleton. Replace S427.
  • 14.07.02.54 - Acu-Rule 10-D Version 2, Magnifying cursor. Red cardboard sleeve. Instructions.
  • 14.07.02.55 - Lawrence 10-B Magnifying cursor. Back has 8-B artwork that shows Wabash, Ind. Front shows Peru, Ind.
  • 14.07.02.56 - Lawrence 10-B Flat cursor. Both sides painted white, then silkscreened scales. Back has 8-B artwork that shows Wabash, Ind. Front shows Peru, Ind. Replace S386
  • 14.07.02.57 - Lawrence 10-B Flat cursor. Full length silkscreen on back. Add new variation. There seems to be 3 variations of rear artwork on the 10-B's. so this will document another, with the standard cursor.
  • 14.07.02.58 - Pickett Microline 140-T - Duplex. White plastic. First injection molded design. Inverse scales same as the rest.Replace S048
  • 14.07.02.59 - Pickett No.120 Trainer (2nd design - Grey braces). gallery
  • 14.07.02.60 - Pickett No. 121 Trig Conversion. Replace S317.
  • 14.07.02.61 - Pickett 80 Student Trig in Retail Sleeve $1.38 price tag. With Instructions.
  • 14.07.02.62 - Pickett No.120 Trainer (1st design - White laminations over black stock. black braces). Replace current image.
  • 14.07.02.63 - Pickett N3-T Power Log Exponential Round Black Logo. Slight spot of corrsion on stock and slide. Brown sleeve. New Addition.
  • 14.07.02.64 - Pickett N4-ES Log Log Vector Hyperbolic. All-black text on Scale labels. Inverse scales with left arrows. Artwork 300/306 in Chicago. Round black logo . Square braces. Extended nylon cursor blocks, flat lens. Brown leather sleeve w/o plastic insert. Fund Raiser
  • 14.07.02.65 - Pickett N531-ES CREI Capitol Radio Engineering Institute. Modern Logo w/ MEXICO.
  • 14.07.02.66 - Pickett N3-T (N-ES color) Power Log Exponential (1959), Aluminum Stock, Round Black Logo, Square finger braces, Inverse scales use left arrow: '<' Name on Sleeve: F.V.Macalalad, M.D., coauthor: "Survival of intestinal allografts in the dog with and without immunosuppression.",1965. "Ultra-rapid nitrogen balances in man",1971. "Peritoneal dialysis simplified",1974. "Evaluation of a vented drainage system in prevention of bacteriuria",1977. Died in 2001. Went to Albany University, N.Y. Lived in Norwich, N.Y.
  • 14.07.02.67 - Pickett N1010-T Trig, c1958.Round Black Logo, Square Braces, with Leather sleeve/plastic insert.Name on flap: Len Devito. Replace ISRM 12.06.24.47 which is damaged.
  • 14.07.02.68 - Pickett N803-ES Log Log Speed Rule Dual Base (1959)
  • 14.07.02.69 - Pickett N-500-T Hi Log Log with Black leather sleeve. (1960) round blk logo
  • 14.07.02.70 - Pickett N800-ES Log Log Speed Rule 1964 Modern logo Black leather sleeve
  • 14.07.02.71 - Sheradoo Inc. , Detroit. Fraction of an inch adding machine. 1952. Patent No. 169,941 issued 1953. Make your own at http://www.evilmadscientist.com/media/inchadder.pdf
  • 14.07.02.72/M333 - Kalkometer Addiator, with stylus, sleeve, and instructions. Made in USA.c1960.
  • 14.07.02.73 - Pickett Model 100 Douglas Sky Rule. 1951. Metal cursor bars. Rounded braces.
  • 14.07.02.74 - Post 1441 (Sun Hemmi) with Magnifier. Pre-WWII. Rivets on back. Sleeve is marked U.S.Blue Co. Chicago. No.1888.
  • 14.07.02.75 - Post 1441 (Sun Hemmi) with Magnifier. "Made In Occupied Japan". Post-WWII 1945-1950. Rivets on back. Sleeve is marked with owner: Charles T. Holmes.
  • 14.07.02.76 - Post 1441 (Sun Hemmi) with Magnifier. dcFF (June 1955). Rivets on back. Sleeve is marked with owner: Charles T. Holmes.
  • 14.07.02.77 - Post 1444 (Sun Memmi) Pre-WWII. Missing cursor. Brown leather sleeve. Narrower stock than 1444K. Replace P122
  • 14.07.02.78 - Post 1444K (Sun Memmi) dcEF (June 1954). Printed date code next to hemmi on back. Brown leather sleeve with pocket clip. Replace P121
  • 14.07.02.79 - Post 1444K (Sun Memmi) dcLD (April 1961). Hemmi brand markings on back. Stamped date code stamped bottom left rear. Brown leather sleeve with pocket clip. Replace P170
  • 14.07.02.80 - Post 1444K (Sun Memmi) dcOA (Jan 1964). Hemmi brand markings on front. Stamped date code stamped bottom left rear. Brown leather sleeve with pocket clip. Name: Charles Weeks. New variance.
  • 14.07.02.81 - Aristo No.89 1st version (note back trig window). All black text on scales. No scale labels. Metal framed cursor (cracked glass). Well: DENNERT & PAPE Hamburg-Altona dc 431 (c1943). Logo:1939-52.
  • 14.07.02.82 - Dietzgen 1771 redirule (rebranded Charles Bruning) -
  • 14.07.02.83 - ECCO 10000 Pocket duplex. (same as K&E Doric 9068). Very rare. has Cracked cursor blocks.
  • 14.07.02.84 - Dietzgen 1776 redirule Pocket Duplex. Brown leather sleeve with bare metal pocket clip. Replaced P042 in gallery.
  • 14.07.02.85/M - K&E 4150-1 K&E 4150-1 sn2930. In green leather sleeve, with retail box, Instructions - Replace P003
  • 14.07.02.86 - Bruning 2401 Mannheim, latest cursor. Blank back. Brown leather sleeve, Name: Jim Adams. Replace P163
  • 14.07.02.87 - Bruning 2401 Mannheim. (1945) Back Promo: Machine Tool Electrification Forum -1945. Brown Sleeve: Gold embossed Name: Alfred E. Trosch. Excess For Sale
  • 14.07.02.88/M - B.F. Grizzle (8" wood stock Made by Lawrence Eng.) Water Line Capacity Slide Rule. Copyright 1944.
  • 14.07.02.89 - Cost and Selling Price Indicator.Parisian Novelty Co. 1934/35 copyrights. Pocket size SR made from folded plastic film.
  • 14.07.02.90 - Helipot Generic slide rule with conversions, ohms law charts. Made by Whitehead Hoad, Newark. N.J.Pocket size SR made from folded plastic film, with similiar constructed cursor.
  • 14.07.02.91 - Diwa No.601-1 Mannheim with black leather sleeve. Promo (on sleeve and back): Engineers & Scientists Guild, Lockheed Section.(Skunk Works). Note: workers quit the union in Dec 1998.
  • 14.07.02.92 - Guedon Plastic pocket, with scale. Made in France. Bright plated cursor frame. Promo: The Everstick Anchor Co. Fairfield, IOWA.Brown leather sleeve.
  • 14.07.02.93 - Guedon Plastic pocket, with scale. Made in France. Narrow metal cursor frame. Promo: Builders Iron Foundry, Providence , Rhode Island. Brown leather sleeve. Replace p153 (Po Box 223)
  • 14.07.02.94 - Guedon Plastic pocket, with scale. Made in France. Folded plastic film cursor. Brown leather sleeve. New addition
  • 14.07.02.95 - K&E 4098 sn34544. Cracked stock. Brown leather sleeve. VERY FRAGILE.
  • 14.07.02.96 - Davis Instruments Inc. T-S-D Computer.
  • Books, Instructions, Manuals and ephemera, too numerous to list.
  • 14.07.02.96 - Dietzgen N1731 Micromatic Trigonometric Type Log Log sn084303
  • 14.07.02.97/M449 - Sandia Corp Cumulative Binomial Distribution Computer with Instructions
  • 14.07.02.98 - Acu-Rule model 100 early Festus, MO
  • 14.07.02.99 - Pickett No.120 Trainer (3rd design - Grey braces) with equivalents on back. gallery
  2014.06.12.01 - Received donation of The Small Calculator, from Gretchen S. Lebrun (Canada) and Jonathan Small, grand children of Gilbert Small.
  2014.06.11.01 - Received donation of Post 1460 Versalog in Retail Box, from Bill Geren who purchased it in 1969 for $18.30USD
  2014.05.29 - Charvoz-Roos - Added its own a separate gallery.
  2014.05.29 - United States - Removed Charvoz-Roos catagory, which has been made its own gallery.
  2014.05.29 - United States - Added background information and photos of Gilbert Small, inventor and manufacturer of The Small Calculator
  2014.05.28 - Received two Gunter's scales from Clay Castleberry.
  
  • 14.05.28.01 Gunter's scale, Two foot, Belcher Bros & Co. New York
  • 14.05.28.02 Gunter's scale, Two foot, Unknown Maker
  2014.05.25 - United States - Added catagory "Science Services, Inc." which made the Things of Science series for young people. Added Things of Science Unit 273.
  2014.05.25.01 - Rarities - Added Cook No.2078 4-sidedEverrde Type box excise rules and Ivory Sector (no maker's mark). Gift of Phillip Rodley, Upperhutt, New Zealand. Added ascession numbers to others.
  2014.05.23.01 - Acquired E.TATA pocket bamboo manheim slide rule
  2014.05.23 - Dietzgen - Added 1725 Maniphase Multiplex Vector Trig Type Log Log sn 113981. Gift of Phillip Rodley, Upperhutt, New Zealand. Added ascession numbers to others.
  2014.05.23 - Faber - Added 1/28 Super Business and Manual. Gift of Phillip Rodley, Upperhutt, New Zealand.
  2014.05.22 - Faber - Added 1/87A Rietz with Addiator and Manual; 375 Rietz with RR-track scales and Manual. Gifts of Phillip Rodley, Upperhutt, New Zealand.
  2014.05.22 - Nestler - Added(Replaced) No37 Electro (S254), No28A 50cm Stadia 400g rule, No0290 Polymath Duplex
  2014.05.20 - Received donation from Pascal Garnier, France, now a Friend of the Museum.
  2014.05.20 - SR_Links - Added Steve's Slide Rules online collection. Steve Seale, Nashville. Tennessee
  2014.05.05 - United States - Added Avol-Rule for Earthworks computation, belonging to Philip Hazen with picture and Bio by Ruth Hazen, Washington, DC.
  2014.05.01 - Received slide rule donations from Phillip Rodley, Upperhutt, New Zealand.
  
  • 14.05.01.01/M313 - Castell 1/87A System Rietz with Addiator dc55-2. rectangular green cardboard sleeve Instructions.
  • 14.05.01.02/M311 - A.W. Faber Castell 375 System Rietz dc7-10. Made in Bavaria. RR Track scales. Oval black cardboard sleeve. Marked J.H.N. Haigh, M.NZ.I.C.W., Instruction for 361. Very ragged, almost remnants.
  • 14.05.01.03/M312 - Faber Castell 1/28 Super Business dc11-07. In Green and clear hard plastic case with flip top. With Instructions.
  • 14.05.01.04 - Dietzgen 1725 Maniphase Multiplex Vector Trig Type Log Log Rule, sn 113981. Conversion Tables insert. Rotted leather sleeve (tossed).
  • 14.05.01.05 - Bone Sector - no maker.
  • 14.05.01.06 - 4-sided Cook Maker, No. 2078. Soho, London. boxwood excise rule.
  • M314 - The Slide Rule, for Students of Science and Engineering by Ward and Blakely, for the Technical branches of the (British) Army
  2014.04.31.01/M310 - Received donation of Avol-Rule, belonging to Philip Hazen with picture and Bio by Ruth Hazen, Washington, DC.
  2014.04.30.01 - Received donation of L-M radio Transmission Rule, designed by Emory C. Curtis (1953), gift of Ellen Emmerich. Used by Father on the VJ101
  2014.04.21.01/M315 - Acquired Things of Science, Computation Unit #273 with Engineering Instrument pocket slide rule and workbook, Napiers Bones chart.
  2014.04.18.01 - Acquired gold with white slide rule tie clasp
  2014.04.14 - Calculators - Corrected images and description for TI SR-10 model 2. Donated by Jeff Illsman.
  2014.04.08 - Pickett - Added Model 3-T (Magnesium), Dual Base Log Log, transitional model. Scan provided by Olivier Cassou collection of France.
  2014.03.09.01 - Acquired Nestler Nr0290 duplex slide rule c1977 .
  2014.03.06 - Nestler - Added Albert Nestler 22R (pocket version of 23R) sacan by C. Hamann Collection, Germany.
  2014.03.06 - SR_Rescue - Terence Meers of South Daytona, FL Adopted a slide rule, with extra donation
  2014.03.03 - SR_Home - Added manufacturers banner to Gallery menu and country banner to Library menu.
  2014.03.02 - Home - Removed promo for 2014 Oughtred Society Winter Meeting in Las Vegas. Now past.
  2014.03.01 - Aerospace and Ephemera - Revised description of Wernher von Braun and Sergie Korolev's slide rules. A closer look revealed they are Nr37 Electros, rather than Nr.23 Reitz. The question was raised by Jürgen Nestler in Germany.
  2014.03.01 - Aristo - Added Aristo Nr0971 Hyperbolog dc2FX4, and Aristo-Stahlbeton Nr939/n=10 System Gottsch. Acquired from Brazil
  2014.03.01 - Nestler - Added Nestler 12b pocket with magnifyer.
  2014.02.28.02 - Acquired Albert Nestler 37 Electro c1941. Same as used by Sergei Korolev and Wehrner von Braun. from Europa, Bulgaria
  2014.02.28.01 - Acquired c1930 Nestler 28a 50cm Stadia slide rule from Sofia, Bulgaria
  2014.02.27 - BRL/Blundell - Added Blundell Harling P3867 Voltage Drop Calculator. Steve Seale Collection
  2014.02.27 - PIC/Thornton - Added F1500 Black Body Radiation Slide Rule, Admiralty Research Laboratory, Tennington. Steve Seale Collection
  2014.02.26 - Calculators - Added Sharp EL-429 Sorokaru (Soroban-Calculator) sn44Y c1984
  2014.02.25 - Calculators - Corrected Soviet (Russian) Elecktronika MK33 CCCP sn887296-8904 (V2) description, based on input from Sergei Frolov' Soviet Digital Electronics Museum in St.Petersburg, Russia.
  2014.02.24 - NEWS - Mike Konshak, the ISRM curator, has been elected to the Oughtred Society board of directors. Mike has been the webmaster of the OS since 2009.
  2014.02.24.01 - Acquired Albert Nestler No.14/3 "Rietz with reciprocal scale and three hairlines" mahogany slide rule.
  2014.02.22 - Graphoplex - Added CALCRUDE Oil Viscosity Slide Rule, Scan by Phil Stanley Collection
  2014.02.22.02 - Acquired Albert Nestler No.12b pocket slide rule with magnifier from Sofia, Bulgaria.
  2014.02.22.01 - Received Albert Nestler No.28 Universal Stadia slide rule from Dick Rose, Ohio. Missing side lens for K and A scale, restored by curator.
  2014.02.21 - Nestler - Added No.24 50cm System Rietz in Metal Hard Case (German Army WWII).
  2014.02.20 - SR_Terms/encyclopedia - Added "Earth Scale" used on Chinese Stadia slide rules.
  2014.02.20 - Orient - Added Haiou Pai 6531 and Haiou Pai catagory. Added SIDA Ruyi 1001. Flying fish 1004 Vector, 1004 Stadia, 1016 HVAC, and Metalworking. Scans provided by Steve Seale.
  2014.02.19 - Nordic - Added CARID category and CARID 3000 Denmark Log Log Decitrig Duplex. Scans from Steve Seale collection.
  2014.02.19 - EastEurope - Addeded Logarex 27402-X Elektro and Logarex 27730 Gas Combustion. Scans from Steve Seale collection.
  2014.02.19 - Germany - Addeded VEB Mantissa Natural Gas Combustion and VEB Mantissa Feutron Klima 1802 (Climate & Humidity SR). Scans from Steve Seale collection.
  2014.02.18 - Nordic - Added J.H. Weil Polylog 1140 Duplex, UTO 931U. Scans from Steve Seale collection.
  2014.02.18 - Germany - Added Veb Mantissa Variant_II 1731-573/4, Staedtler 944-28, 544-08, Reiss 3227 Duplex and 3223 Progress. Scans from Steve Seale collection.
  2014.02.15 - Australia - Added MICADOR pocket slide rule, made by Santok in Japan.
  2014.02.15 - MiscJapan - Added Fuji 1280 Duplex LogLog. Scan provided by Steve Seale collection.
  2014.02.14 - Australia - Added MICADOR section with model 60, Rod lovette Collection, and model 530, Scans from Steve Seale collection.
  2014.02.14 - Nestler - Added 290 Polymath and 297 Electronic I Duplex . Scan by Steve Seale Collection. Nashville, Tennessee
  2014.02.14 - Post - Added 1491 Chemical Duplex (same as Hemmi 257). Scan by Steve Seale Collection. Nashville, Tennessee
  2014.02.13.01 - Ricoh - Acquired and added Jason 803 Log Log Duplex Deci-Trig dc N.S-3, (1965)with sleeve
  2014.02.12 - SR_Library/Post - Added Dietzgen 1797M The Slide Rule Manual - Instructions for Using The Midget Slide Rule
  2014.02.12 - Nestler - Added Rare Albert Nestler No31 Timber Slide Rule (Nr.31 Nestler Holzhandler Rechenschieber - Dieser Rechenschieber) from Slovenia
  2014.02.12 - Lawrence - Added(Replace) Engineering Instruments 250-BT (S032) New all plastic cursor. Gift Of Bill Wehrend Collection, Palo Alto, California.
  2014.02.12 - ForSale - Added Dietzgen 1797M (Gilson Midget) circular slide rule to Slide Rule Rescue
  2014.02.12 - Acumath - Added(Replaced) U.S. No. 1500 LogLogDecimalTrig (ISRM 13.07.03.02) with sleeve. Added No600 with Yellow Stock. HSRC 50071
  2014.02.12 - Faber - Added(Replaced) 57/22 Business (S288) dc 11-05 clear hardcase. Gift Of Bill Wehrend Collection, Palo Alto, California.
  2014.02.12 - Nordic - Added(Replaced) UTO 601 Hoffman (P133) Raymond Concrete promo. Gift Of Bill Wehrend Collection, Palo Alto, California.
  2014.02.12 - Pickett - Added Pickett 120 Trainer Instructions and Ascession number Estes entry.
  2014.02.12 - SR_Library/Post - Added Form AF-198 - How to use your Post slide rule. For models 1452W, 1447, 1444K, 1441.
  2014.02.12 - Concise - Added(Replaced) Sama & Etana 600 with CE Insert (1968 Concise) Promo:General Electric. with manual blue sleeve. replace C036
  2014.02.11 - SR_Library/Japan - Added Hemmi P280/P281 Instructions. Belonged to Mary Northcote in England.
  2014.02.11 - Aristo - Added Aristo 109 50cm Rietz. Belonged to Donald Henry Northcote. Gifted by his daughter, Jane Northcote.
  2014.02.11 - Blundell - Added BRL AL4. Belonged to Donald Henry Northcote. Gifted by his daughter, Jane Northcote.
  2014.02.11 - Hemmi - Added Hemmi P281 with manual. Belonged to Mary Northcote. Gifted by her sister, Jane Northcote.
  2014.02.11 - Thornton - Added(replaced) Thornton P271 Log Log (S276). Gifted by Jane Northcote.
  2014.02.11.02 - Acquired Aristo Nr0971 Hyperbolog dc2FX4. Acquired from Brazil
  2014.02.11.01 - Acquired Aristo-Stahlbeton Nr939/n=10 System Gottsch. Acquired from Brazil
  2014.02.10 - Received donation of slide rules from Jane Northcote, of the United Kingdom, used by herself, her Father Donald Henry Northcote (1921-2004) and her sister Mary Northcote (1958-), including biographies and photos.
  • 14.02.10.01 - Aristo 109 50cm System Rietz, dc432 (Feb, 1943) version 1 Made in Germany. Has cracked stock (repaired with Cynoacrylate). Missing backside trig hairline.
  • 14.02.10.02 - BRL AL4 Made in England with cardboard sleeve
  • 14.02.10.03/M309 - Hemmi No. P281 dcUC with blue&Gray plastic shell with instructions for P280 & P281
  • 14.02.10.04 - British Thornton No. P271 gray hard plastic shell
  2014.02.10 - Faber - Added A.W. Faber 369 pocket slide rule. Hermann's slide rule catalogue.
  2014.02.10 - SR_Rescue - Brad Clements of Potsdam, NY Adopted 4 slide rules.
  2014.02.10 - Friends - Added Brad Clements and Leonard Woolsey to Financial contributors, now Freinds of the Museum.
  2014.02.09.02 - Acquired Nestler No.12a 0f 1915, 15cm. SIEMENS-SCHUCKERT in well.
  2014.02.09.01 - Acquired Nestler No.24 50cm System Rietz in Metal Hard Case (German Army WWII) broken glass. 2014.02.09 - Sterling - Added(Replaced)two early models of Sterling 584 with two molded braces. One with model number (S446). Gift Of Bill Wehrend Collection, Palo Alto, California.
  2014.02.09 - Germany - Added Staedtler 544-55 Rietz-Scolaria (Feb 1962). Gift Of Bill Wehrend Collection, Palo Alto, California.
  2014.02.08 - SIC - Added(Replaced) 1520 sn40157 (S516) SIC 1520 Multiphase DecaTrig. Gift Of Bill Wehrend Collection, Palo Alto, California.
  2014.02.08 - Graphoplex - Added Koh-I-Noor 10000 LogLog Duplex Neperlog. Gift Of Bill Wehrend Collection, Palo Alto, California.
  2014.02.08 - Post - Added 1444K (rebranded Hemmi 34RK) MIOJ 1945-1952. 1444-D (cWWII - Made In USA), 1447P Duplex dc SI (Sep 1968), 1462 White plastic braces (replaces S074). 1450 Versatrig dcVE(1971).
  2014.02.08 - SR_Terms/Encyclopedia - Enhanced "Made In Occupied Japan" description, and added "Made In Occupied Germany".
  2014.02.07 - Hemmi - Added(Replaced) 256 (S033), 2634 MIOJ Pocket (P137) with biography and photo of original owner, Arthur McCusker (1931-2013) of Boise, Idaho.
  2014.02.07 - K&E - Added(Replaced) KE_68-1497_sn920128 (S381), KE_4161-3_sn220819 (s164), 4097-B sn92902, KE_4055_Favorite_sn948951(S451).
  2014.02.05 - Pickett - Added 1010-ES Transitional model, aluminum with nylon cursor, but with magnesium style braces. Rare sleeve.
  2014.02.04 - SR_Library/Pickett - Added Pickett 160 instruction sheet
  2014.02.04 - Pickett - Added 160 Microline, CI scale in italics, with instruction sheet. N200-ES Pocket Trig Round Black Logo, curved braces (transitional hybrid model).
  2014.01.03 - United States - Added Key Line catagory and Key Line's Concise Circular Slide Rule
  2014.02.03 - Pickett - Added Model 200 magnesium with retail box and ephemera. Has Shell Chemical logos. Model 1010 sn2C40913 with box, DIEPO label.
  2014.02.02 - Blundell - Added BRL T.50, Blundel Harling T-50, 506 Academy, A504 Super Duplex. Scan provided by Steve Seale of Nashville, Tennessee.
  2014.02.02 - United Kingdom - Added WH Smith A505 and WH Smith & Son LogLogTrig. Scan provided by Steve Seale of Nashville, Tennessee.
  2014.02.02 - Unique - Addded Navagational Slide Rule. Scan provided by Steve Seale of Nashville, Tennessee.
  2014.02.02 - SR_Library/Pickett - Added Pickett Insert Form 270 - How To Adjust Your Slide Rule c.1949
  2014.02.02 - United States - Added Pickett 1010 to Dieterich-Post section of gallery. Added DIEPO logo. Image from Meeker's Patented-Antiques.
  2014.02.02 - Germany - Added REWA 10M Rechenwalze Cylindrical Slide Rule. Photo by Ed Chamberlain collection.
  2014.02.02 - France - Added Appoullot T2 and T3 spiral slide rules. Ed Chamberlain collection.
  2014.02.01 - SR_WhosWho - Added Steve K. Seale of Nashville, Tennessee.
  2014.02.01 - Ricoh - Added Staedtler Mars 944-28; Relay DE-1008, DT-1065; Ricoh 151; and Lutz 300B. Scans provided by Steve Seale of Nashville, Tennessee.
  2014.02.01 - Germany - Added Staedtler Mars 944-28, Scan provided by Steve Seale of Nashville, Tennessee.
  2014.02.01 - SIC - Added Model No. 151 Multi Log, Scan provided by Steve Seale of Nashville, Tennessee.
  2014.01.31.01 - Received Pickett Model 1010-ES 7ft Demonstration slide rule )modern logo), Gift of Jim Rohloff, Scot Jaynes,, Laura Robertus, Chuck Stewart, Aaron Schultz of Praxair Inver, Grove Heights, Minnesota Plant
  2014.01.29 - Ephemera - Added photo from 1968 yearbook of the Math club at Wheatridge High School in Colorado. Courtesy of Don and Cindy McCoy, Silverthorn, Colorado.
  2014.01.29 - SR_Library/USA - Added M299 Fullerton 1450 Acudial (Concise No. 28N) Circular Slide Rule Instructions, Gift of Bill Wehrend Collection.
  2014.01.29 - United States - Added Bruning 2398 5inch duplex sliderule, Bruning 1958, logo and place markers for known Fullerton circular slide rule models. Lacking images.
  2014.01.24 - Circular - Moved all Concise Circular Slide Rules and variants like Sam & Etana to the new Concise gallery.
  2014.01.24 - Gallery - Added new gallery dedicated to Concise Circular Slide Rules. Concise is made by K.K. Konsasu, Tokyo, Japan.
  2014.01.24 - United States - Added new section for Fullerton Sales Company. Includes rebranded Concise and Acumath slide rules.
  2014.01.24 - Acumath - Moved Fullerton-Acu to MiscUSA United States gallery under its own section.
  2014.01.23 - Germany - Added Instructions to IWA 0272 Muiderkring-electronic-English. Scan By David Walker, UK
  2014.01.23 - SR_Library/Dietzgen - ISRM M298 Dietzgen 1797M Gilson Midget Binary Instructions. Gift of Bill Wehrend Collection.
  2014.01.23 - Ricoh/Relay - Added Alvin 1157 Elite Vector Log, scan provided by Steve Seale of Nashville, Tennessee.
  2014.01.22 - SR_Library/Japan - Added M297 Key Line (Concise No. 28N) Circular Slide Rule Instructions, Gift of Bill Wehrend Collection.
  2014.01.22 - SR_Library/British - Added M294 and M296 Otis King Cylindrical Slide Rule Instructions. The former a gift of Phillip Rodley, New Zealand.
  2014.01.21 - SR_Library/Euro - Added Faber-Castell 1/28 Super Business Instructions, Scan By Lew Solomon in New Zealand.
  2014.01.15 - Hemmi - Added 256 Communications Duplex dcDG, and Hemmi 2634 MIOJ, with bio anf photos of original owner Arthur McCusker (1931-2013).
  2014.01.14.01 - Received Albert Nestler No31 Timber Slide Rule (Nr.31 Nestler Holzhandler Rechenschieber - Dieser Rechenschieber) from Slovenia
  2014.01.13 - KE_Standard - Added Robert J. Olson (1913-2006) bio and portrait to 4092-3 sn 422878 the original owner.
  2014.01.13 - Search - Replaced search engine. Trying new things like removing background, going to white.
  2014.01.10 - Received 85 slide rules re-gifted by Jim Wall of the Museum Of American Heritage, Palo Alto, California, part of a gift fom the Bill Wehrend Collection. New additions or replacements to the galleries will be listed below as accession numbers are assigned, and later scanned. 46 Duplicates will be found in the Slide Rule Rescue - Adopt-a-Slide Rule fund raiser gallery. 7 were added to the loaner program.
  2014.01.10 - Received numerous slide rules from William R Wehrend II Collection.
  
  • 14.01.10.01/M302 - Pickett 200-ES magnesium, black round Pickett logo, Shell Logo. Missing 1 stator screw. In Retail box with manuals and docs 5.0
  • 14.01.10.02 - Post 1444-D Commerce pocket WWII with red leather sleeve.
  • 14.01.10.03 - Post 1444-K/Hemmi 34RK Pocket Made in Occupied Japan dc.
  • 14.01.10.04 - K&E 4097-B sn92902 pocket with leather sleeve.
  • 14.01.10.05 - UTO 601 Hoffman Promo:Raymond Concrete Pile Division.
  • 14.01.10.06/M299 - Fullerton Acudial No.1450 V1 Circular Concise 28N Beck: Concentric conversion table. Black sleeve. Wrap- around cursor. Fullerton Instructions.
  • 14.01.10.07 - Fullerton Acudial No.1450 V2 (red label) Circular Concise 28N with conversions on back. One sided cursor. Back: Radial conversion table. Yellow sleeve.
  • 14.01.10.08/M297 - "Key Line" Concise 28N Circular (no brand label). "Key Line" Re-branded Instructions. One sided cursor. Back: Radial conversion table. Black sleeve. Dole Company Promo.
  • 14.01.10.09/M298 - Dietzgen (Gilson) Midget. Green background. Instructions. Green sleeve. To fun raiser.
  • 14.01.10.10 - General Industrial Slide Rule, Circular. 1959 Slide-chart Corp.
  • 14.01.10.11 - Sama & Etana 600 with CE Insert (1968 Concise) Promo:General Electric. with manual blue sleeve. replace C036 Hooker
  • 14.01.10.12 - Post 1462 white braces c1945 replace S074
  • 14.01.10.13 - Post 1450 Versatrig dcVE (May 1971), Black Leather sleeve
  • 14.01.10.14 - Post 1452W Universal dcJL (Dec 1959), Same as Hemmi 50W. No sleeve.
  • 14.01.10.15 - K&E 4055 Favorite sn948951, New Improved Cursor (has KERCS Cracks, need to reinforce). Perfect case.
  • 14.01.10.16/M303 - Post 1447P dcSI (Sep 1968)New style all plastic Hemmi, Grey Back Braces. Red cardboard sleeve. Manual.
  • 14.01.10.17 - Engineering Instruments 250-BT all plastic cursor. Replacement.
  • 14.01.10.18 - Staedtler-Mars No.54455. Rietz-Scolaria. dc262 (Feb1962) Dirty. Clear/green vinyl sleeve.
  • 14.01.10.19 - Koh-i-noor 10000 Log Log Duplex. (Graphoplex Neperlog) Black leather sleeve (shrunk too much to put slide rule in).
  • 14.01.10.20 - Faber-Castell 57/22 Business dc 11-05 clear hardcase. Replaces S288
  • 14.01.10.23/M308 - Pickett 160 Microline, CI scale in italics
  • 14.01.10.28 - Post 1446 pre WWII Made in Japan.
  • 14.01.10.40 - K&E 68-1497 sn920128. Exposed mahogany Laminated edges. black leather case. Replace S381.
  • 14.01.10.41 - K&E 4161-3 sn220819 Simplex. Nagauhyde sleeve, Green Retail Box.
  • 14.01.10.42/M304 - Pickett 1010 Trig sn 2C40913 DIEPO with manual and retail box - swap with ISRM 12.11.22.03 sn3004548.
  • 14.01.10.43 - SIC 1520 Multiphase DecaTrig - S/N 40157 Leather sleeve. Name: Ed Zimmer. Replace S516.
  • 14.01.10.44 - Acu-Math 1500 Log Log Decimal Trig U.S., Leather sleeve. Replace ISRM 13.07.03.02 (has corrosion)
  • 14.01.10.45 - Pickett N4-ES Vector Type LogLog DualBase SpeedRule Square braces Circumscribed Triangle Logo, 1959-1962, Leather sleeve.
  • 14.01.10.47 - Pickett N903-ES Trig and Conversion, flat lens, extended cursor bars, rnd blk logo, grey naugahyde sleeve.
  • 14.01.10.48 - Pickett 1010-ES - Transitional model with -ES, New extended nylon cursor bars, flat lens, Old rounded braces, grooved slide. soft Brown leather sleeve w/offset snap.
  • 14.01.10.49 - Pickett N902-T Simplex Trig, 1962, Round Black logo, wide cursor, convex lens, concave braces, black naugahyde sleeve.
  • 14.01.10.70 - Sterling 584 white Rare First Early Version with model number. 2 bridges. Replace S446
  • 14.01.10.71 - Sterling 584 white Rare 2nd Early Version no model number. 2 bridges. New addition.
  • 14.01.10.79 - Relay No.102 Mannheim, dcI.K-2 (1960), Missing cursor. ISRM has a spare frame but must make the lens fron a S.I.C. lens.
  2014.01.10 - Sterling - Added Sterling 566 DIAL-A-MATIC Adding Machine Pencil Box. Ebay photo
  2014.01.10 - Circular - Added Radiac Nuclear Yield Calculator Set ABC-M28A1 - Two Disk set, Ebay photos by Baja_Ron. (look at end of page)
  2014.01.09.02 - Acquired Hemmi 2634 MIOJ, Original owner Arthur McCusker (1931-2013).
  2014.01.09.01 - Acquired Hemmi 256 Communications Duplex dcDG, and Hemmi 2634 MIOJ, Original owner Arthur McCusker (1931-2013).
  2014.01.09 - K&E_Standard - Added background information on K&E 4081-3 S/N 365785 1948. The sleeve had the name of Jean Jolkovski, and the ISRM researched and found him living in Phoenix, at 87 years old. Jean said this slide rule was issued to him as part of the GI Bill, but was stolen in 1940 at Ohio Univ.
  2014.01.08 - K&E_Standard - Added(Replaced) 4093-3 sn322624 1930 (S049) . Swapped Improved Cursor with KERCS for an All glass cursor (look-a-like) made by S.I.C. (Ricoh) 1960. Gift of Dan Swerdlow, Bethesda, Maryland.
  2014.01.08 - SR_WhosWho - updated John Mosand (1935-2013) of Trondheim, Norway who passed away in 2013.
  2014.01.07 - Post & KE - Added missing accession numbers to ISRM slide rules in galleries.
  2014.01.07 - Faber - Added missing scan of A.W.Faber 1-87 Syst. Rietz dc43-8 Donated By Raymond Du Bois.
  2014.01.07.01 - K&E_Standard - Added 4092-3 sn149441 (1926)w/Times Roman font scale labels. All glass cursor - to gallery
  2014.01.07.02 - K&E_Standard - Added 4092-3 sn399224 (1932)w/helvetica font scale labels. All glass cursor ISRM Lens.
  2014.01.06 - Nordic - Added Diwa 111 Electro and 301 Rietz. Gift of Phillip Rodley, Upperhutt, New Zealand.
  2014.01.06 - SR_Library/Euro - Added 2 instructructions for Diwa 111 and 301. Gift of Phillip Rodley, Upperhutt, New Zealand. repaired several broken links.
  2014.01.06 - Hemmi - Added(Replaced) 8inch No.P23 and 2664S dcTG July 1969 Business Rule (S022). Orig owned by a M.W.Baker, Gift of Phillip Rodley, Upperhutt, New Zealand
  2014.01.06 - Post - Added 1444K w/Magnifying Cursor dcOD (April 1964) & Leather pocket sleeve, Gift of Phillip Rodley, Upperhutt, New Zealand
  2014.01.06 - Pickett - Added N400-T and 400-ES, courtesy of Greg Scott collection
  2014.01.05 - SR_Library/Pickett - Added 2 more versions of Model 400 Business Slide Rule Manuals, scans by Greg Scott Greg's Slide Rules
  2014.01.05 - Pickett - Added(Replaced) Model 400-T Business Rule (P075) Gift of Phillip Rodley, Upperhutt, New Zealand
  2014.01.05 - Faber - Added(Replaced) 378 Electro (S120) Gift of Phillip Rodley, Upperhutt, New Zealand
  2014.01.05 - Ephemera - Added 1957 K&E receipt for 4081-3. Sold for $29.95
  2014.01.05 - SR_Library/Euro - Added Tavernier-Gravet Notice Sur Ĺemploi des Reglas a Calcul Scan By Gonzalo Martin
  2014.01.05 - SR_Library/K&E - repaired links to : Brochure: A Slide Rule With Intellect And Horse Sense (2.31MBpdf)
  2014.01.05 - K&E_Standard - Added accession numbers to Martha prince gift entries.
  2014.01.03 - K&E_Standard - Added(Replaced) 4092-3 (S049) Log Log Duplex Vector S/N 422878 Reinforced all glass Cursor
  2014.01.03 - Received gifts of slide rules from Phillip Rodley, Upperhutt, New Zealand
  
  • 14.01.03.01 - A.W. Faber 378
  • 14.01.03.02/M293 - Diwa No.301 Rietz dc36 in Retail box
  • 14.01.03.03/M294 - Otis King Model K, Type A 1940
  • 14.01.03.04 - Hemmi 2664S, owned by M.W. Baker
  • 14.01.03.05 - Pickett 400 Business Slide Rule
  • 14.01.03.06 - Post 1444k dcOD in Leather sleeve
  • 14.01.03.07 - Hemmi P23 - Brace on stock was repaired by user
  • 14.01.03.08/M295 - Diwa No.111 Electro dc36 in Retail box, Owner M.P.Armstrong 1950
  2014.01.01.01 - Received acquisition of K&E 4093-3 Log Log Duplex Vector S/N 422878 Reinforced all glass Cursor
  

  ---

  2013.12.25 - SR_Library/Books - Added complete scan of Mathematics Made Easy - 1941 and partial scan of Simplified Mathematics For Daily Use an How To Use the Slide Rule - 1943, both by Frank A. Rapport
  2013.12.25 - France/Belgium - Added Section on Lenoir, with scans from the Etieńne Pommel Collection
  2013.12.25 - SR_WhosWho - Added photo for Marc Thomas, Nantes, France and additional bio info
  2013.12.25 - Aristo - Added Aristo 10065 System G¨ter ©1952 Image By Gonzalo Martin's PhotoCalcul.com, France
  2013.12.25 - SR_dates - Expanded Hemmi timeline
  2013.12.24 - Hemmi - Added J. Hemmi Model 6, 150mm[6inch] (1914-1929) Pocket stock slide rule, in case
  2013.12.22.M292 Received and scanned acquisition of Simplified Mathematics For Daily Use an How To Use the Slide Rule By Frank A.Rappolt ©1943
  2013.12.22.M291 Received and scanned acquisition of Mathematics Made Easy By Frank A.Rappolt ©1941
  2013.12.21.01 - Received acquisition of Sun Hemmi Model 6, 150mm[6inch] (1914-1929) Pocket stock slide rule, in case
  2013.12.21 - Faber - Added A.W.Faber 1/98/398 Elektro dc38-4 (1938). made of Pearwood. Acquired out of Australia.
  2013.12.20 - Nestler - Added photo of No. 21 Timber slide rule, c1938. Photo contributed by Matej Marka, Slovenia.
  2013.12.19 - Received gift from Kevin Ward of Texas, now a Friend of the Museum
  2013.12.17 - Received gift from Blaine Mogil of California, now a Friend of the Museum
  2013.12.13 - Received gift from Vegard Valberg of Norway now a Friend of the Museum
  2013.12.12 - SR_WhosWho - Added José Gabriel Fernández of Santa Creuz, Spain.
  2013.12.12 - Faber - Added Faber-Castell 2/84 Mathema, 2/84N Mathema, 378 Elektro, Verlag Chemie, 342 Business Instructions to respective specimens.
  2013.12.12 - SR_Library/Europe - Added Faber-Castell 2/84 Mathema, 2/84N mathema, 378 Elektro, Verlag Chemie, 342 Business Instructions. Scans courtesy of Jorge Fabregas'sreglasdecalculo.com, Spain
  2013.12.11 - Faber - Added Faber-Castell 379 Elektro, used on the design of the Hell Gate Power Sation, Brooklyn , New York, in 1921, and a reference scan of the same rule courtesy of Jorge Fabregas'sreglasdecalculo.com, Spain
  2013.12.10 - Website cleanup - Removed, replaced or corrected 139 broken links over 441 pages.
  2013.12.12 - SR_Library/Europe - Added Faber-Castell 2/84 Mathema, 2/84N mathema, 378 Elektro, Verlag Chemie, 342 Business Instructions, courtesy of Jorge Fabregas'sreglasdecalculo.com, Spain
  2013.12.10 - Website cleanup - Removed, replaced or corrected 139 broken links over 441 pages.
  2013.12.09 - UnitedStates - Added Gilbert Small pocket slide rule to its own catagory, with Patent info. Images from Nathan Zeldes Collection
  2013.12.09 - Circular - Added(Replaced) Gilson Midget, 1919 (C39) and manual and catalog from 1922.
  2013.12.08 - Relay/Ricoh - Added Alvin 1150 Elite Desilog dcI.K-4 (1960). Note first artwork, as 'Desilog' a misspelling, it should have been 'Decilog' as shown in another specimen.
  2013.12.08 - KE_Standard - Added(Replaced) 4088-1 sn54037 (P103) dated 1923, Marked 'XMAS 1923' a gift from the 'McKinneys'
  2013.12.08 - Nestler - Added Albert Nestler A-G No.41 Pocket 1923
  2013.12.08 - Faber - Added1/54 Darmstadt dc870 Aug 1970 (V2). Added notes to existing Import 1/54 (V1) and improved look of the image..
  2013.12.08 - Faber - Replaced 2/83 Insert (English) image, donated by Phillip Rodley, with higher resolution image, at the request of Bruce E. Van Deuson.
  2013.12.07.01 - Received acquisition of Faber Castell 1/98/398 Electro slide rule, RR track divisions, metal cursor, in case Name on stock: W.Craick, dc38-4, was in Australia
  2013.12.07 - British - Repair a broken link to Otis King Images
  2013.12.06 - Pickett - Added Model 400 Business Magnesiujm stock Rule, Model 902-T with Diecast braces and cursor blocks
  2013.12.05 - SR_WhosWho - Expanded Burns Snodgrass (1886-1954) entry, founder of Unique Slide Rule Company.(1920-1993).
  2013.12.05 - SR_dates - Added Unique Slide Rule Company timeline to bottom of page
  2013.12.05 - Unique - Added Unique Slide Rule Company history to top of page
  2013.12.03.05 - Received acquisition of Pickett Model 902-T (1957) DieCast braces and cursor blocks, in leatherette sleeve
  2013.12.03.04 - Received acquisition of Pickett Model 400 (1945) Magnesium stock slide rule, in leather case
  2013.12.03.03 - Received acquisition of Faber Castell 1/54 Darmstadt slide rule, all plastic cursor, in case dc870-54
  2013.12.03.02 - Received acquisition of 4" Albert Nestler slide rule, cracked glass
  2013.12.03.01 - Received acquisition of Alvin (Ricoh) Desi Log Elite No 1150 dcI.K-4 (
  2013.11.24 - MiscUSA - Added a Charles Bruning 2406, ebay photo.
  2013.11.23.01 - Received acquisition of Gilson Midget circular slide rule, first version from Niles, Michigan, with two booklets, Instructions and a sales catalog.
  2013.11.22.01 - Received acquisition of K&E 4088-1 sn 54037 duplex slide rule, Marked 'XMAS 1923' a gift from the 'McKinneys'. 1st Owner SNODGRASS. 2nd Owner O. Rittmaster, R.E. 4296
  2013.11.20 - MiscUSA - Added a hyperlink index to manufacturers in this gallery at top of page.
  2013.11.20 - MiscJapan - Added Hope 51, Hope 53, Hope 54 and Hope 57 images from the ISRM Hermans Slide Rule Catalogue.
  2013.11.20 - MiscUSA - Moved the Mead Corporation catagory from Misc Japan, as this was an USA company distributing rebranded Japanese slide rules. Added logo and historical data.
  2013.11.20 - MiscJapan - Added Kutsuwa 10 inch slide rule, gift of Phillip Rodley, NZ and added logos for Kutsuwa.
  2013.11.20 - Circular - Added(Replaced) Mascot Vest Pocket Circular Slide Rule (C28), with case and Instructions.
  2013.11.20 - SR_Library/General - Moved several documents, Richardson, Mascot, Gilson, to the SR_Library/USA
  2013.11.20 - SR_Library/Japan - Added ISRM M287 Kutsuwa Instructions, Gift Of Phillip Rodley, NZ
  2013.11.20 - SR_Library/USA - Added ISRM M288 Mascot Vest Pocket Slide Rule ©1934 TavellaSalesCo
  2013.11.20 - SR_Library/Books - Added ISRM M286 How To Use The Slide Rule Forum House ©1968, Gift Of Phillip Rodley, NZ
  2013.11.19 - Received donation from William Priestley, now a Platinum Friend of the Museum.
  2013.11.05 - Received Gifts of slide rules acquired by Phillip Rodley, Upperhutt New Zealand
  • 13.11.05.01 - WE&F Newton Ivory Sector
  • 13.11.05.02/M287 - Kutsuwa 10 inch Mannheim, with Instructions and conversion Insert
  • 13.11.05.03 - Hemmi 64 Occupied Japan. Gift of Lew Solomon and Phillip Rodley
  • 13.11.05.04 - A.W. faber 368 Electro, rare cursor
  • M286 - How To Use The Slide Rule Forum House Publishers ©1968
  2013.11.05 - Received Gift from Tony Pearce, now a Friend of the Museum
  2013.11.02 - Faber castell - Added image of 50cm long 4/54 Darmstadt. Courtesy of the Atsushi Tomozawa Collection, Japan
  2013.10.31 - Dietzgen - Added (replaced) 1760 Manheim (S368 and image of one at ISRM with missing cursor Donated by David Hecht) with all glass cursor, box with intact flap
  2013.10.30 - Post - Added 1460 Versalog, Date code 1954. Gift of Roberta Rosty of Saddle Brook, New Jersey. belonged to father, Stephen R. Rosty (1921-2012).
  2013.10.30 - SR_Library-K&E - Added ISRM M283 K&E 9068 Doric pocket duplex Instructions. Gift of Roberta Rosty of Saddle Brook, New Jersey.belonged to Stephen R. Rosty.
  2013.10.30 - K&E Standard - Added(Replaced) 9068 Doric pocket duplex (P004), sn 6027. Gift of Roberta Rosty of Saddle Brook, New Jersey.belonged to Stephen R. Rosty.
  2013.10.29 - SR_Library/Catalogs - Added Faber-Castell 1966 Catalog from the Hubert van Dongen Collection an ISRM Associate.
  2013.10.29 - Dietzgen - Added(Replaced) Phillips 1759B 1914-1915 (S170).Original owner has written '15 on the stock establishing the date. Very rare this happens for museum curators! Removed S300 Phillips 1759 as the K&E cursor did not provide a hairline for the side scale 'E'.
  2013.10.28 - SR_Library-Pickett - Added 1948 Model 4 Vector Hyperbolic Instructions, scan donated by Marion Moon
  2013.10.28 - K&E Added K&E 4092 Log Log Duplex Lot 74 With Magnifier (1915), K&E 4070-3 Trig ImprovedCursor sn763035 KERCS Cursor
  2013.10.26.01/M288 - Acquired Mascot Vest Pocket (2.75" dia circular) Slide Rule ©1934 Tavella Sales Co.
  2013.10.25.01 - Acquired Dietzgen Phillips with all glass cursor, box
  2013.10.24.01 - Acquired Dietzgen 1760 Manheim with all glass cursor, box with intact flap
  2013.10.22.01 - Received donation of Slide Rules from the collection of Ms. Roberta R. Rosty of Saddle Brook, New Jersey. Manual was sent 08/13. Roberta has 2 Patents: number 4,410,393 issued October 18, 1983Preparation of steel surfaces for adhesive bonding by etching with H.sub.3 PO.sub.4 -polyhydric alcohol mixture 4,835,016 Mar 28, 1988 Adhesive bonding. Both for The United States of America as represented by the Secretary of the Army.
  
  • 13.10.22.01 - K&E Doric 9068 Slide Rule sn 6027 (replace P004)
  • 13.10.22.02 - Post 1460 Versalog, date code EB (black CO label), With Leather case. Case Flap and Stock has name written on it
  • Sterling 587 without cursor (scrap)
  • C-Thru pocket slide rule, without slide (scrap)
  2013.10.21 - Dietzgen - Added 1762 20inch Mannheim, N1733 sn005585 gift of Phillip Rodley
  2013.10.21 - Hemmi - Added Model 259-D rebranded as Odelco, 1968. Gift of Phillip Rodley, New Zealand
  2013.10.21 - Pickett - Added(Replaced) Model 3, Magnesium stock (S549). Gift of Phillip Rodley, New Zealand.
  2013.10.21 - MiscUSA - Added(Replaced) Charvoz-Roos SR-111 (S369)
  2013.10.21 - Thornton/PIC - Added PIC 121 Electro with Plastic framed cusor. Gift of Phillip Rodley, NZ.
  2013.10.21 - Circular - Added Science Spectrum Occctal-Decimal and Hexa-Decimal slide rules, designed by Phillip Wyatt. Ref Photo by David Sweetman.
  2013.10.21 - Nestler - Added(Replaced) 2012 Manheim (S266) with metal framed cursor. Dieterich-Post/Nestler 2012 with thin film cursor.
  2013.10.21 - MiscJapan - Added Fuji No. 251 Rietz (Replaced reference image), gift of Phillip Rodley, Upperhutt, New Zealand
  2013.10.21 - Nordic - Added Diwa No.101 (Replaced reference image) gift of Phillip Rodley, Upperhutt, New Zealand
  2013.10.21 - Ricoh - Added Lafayette F686 dcJ.K-1 (Replaced reference image) gift of Marion Moon of California 2013.10.13 - MiscUSA/Dieterich-Post - Added historical background. Added Basic Mannheim, made by Nestler (model 2012 variant) for Dieterich-Post Co.
  2013.10.09 - Received gift from Colin Riley, Now a Friend of the Museum.
  2013.10.09 - Received Gifts of slide rules acquired by Phillip Rodley, Upperhutt New Zealand
  • 13.10.09.01 - DIWA 101 in Oak box
  • 13.10.09.02 - Fuji No. 251 Rietz Name on Stock: Pam Frost 55.
  • 13.10.09.03 - Odelco (Hemmi) 259D for mechanical engineer dcS?(1968) Name on Sleeve flap: Monek
  • 13.10.09.04 - 20" Faber-Castell 4/22 Business SlideRule, Pristine
  • 13.10.09.05 - Pickett Model 3 magnesium snC036119 rubber case, Name:Zim
  • 13.10.09.06 - Dietzgen N1733 sn005585 Name on Sleeve flap: Andy
  • 13.10.09.01 - PIC 121, original cursor GreenCardboardSleeve, Name on Back of stock: G.F.Webb
  2013.10.08.01 - Received gift of Lafayette F-686 Vectorlog, datecode J.K-1. Donated by Marion Moon. California.
  2013.10.07 - Received new acquisitions from multiple sources.
  
  • 13.10.07.01 - Bone protractor c1890, for use with sectors
  • 13.10.07.02 - A.W. Faber 379 Pocket Electro. 1908-1935
  • 13.10.07.03 - Nestler 21 Railroad track divisions. No cursor
  • 13.10.07.04 - Post Hemmi 1441 Pocket.
  • 13.10.07.05 - Albert Nestler 2012 Basic Mannheim (no model number) Metal frame cursor, Name in well of stock: Cosentio
  • 13.10.07.06 - Faber-Castell 67/87 pocket slide rule with addiator
  • 13.10.07.07 - Charvoz-Roos SR-111 Trig-O-Log, Black Leather Case
  • 13.10.07.08 - K&E 4070-3 sn763035 with leather sleeve and box one cursor block has KERCS
  • 13.10.07.09 - Dieterich-Post Co. (Nestler 2012) with thin film cursor
  • 13.10.07.10 - K&E 4092 lot74 with Magnifier All glass cursor, one broken lens .
  • 13.10.07.11 - K&E 4081-3 sn288720 KERCS
  • 13.10.07.12 - Daruma Soroban 10 digit 1x4
  2013.10.07 - United Kingdom (British) - Added Simplon Electro Log Log, image and instructions provided by Cyril Catt of Australia
  2013.09.25 - Nordic - Added Diwa Ideal No. 701 Export, Donated By Mikael Seierup, Denmark. Belonged to his father. Added reference photos of Diwa 730 Combilog. Added David Hecht bio to Diwa 911.
  2013.09.25 - United States (aka MiscUSA) - Added(Replaced) Indeco Pocket Slide Rule (P123), Henschel No. 2025 (Nestler), with missing cursor, and a n INDECO Monoface Rule from the MIT Museum K&E Archives. Charvoz-Roos 109 (same as "The Roos Company" version).Deleted S407 Charvoz-Roos SR-109.
  2013.09.25 - Library/MiscEuro - Added IWA 0272 (English) Electronic slide rule Instructions, Scan donated by David Walker, UK
  2013.09.24 - K&E - Added(Replaced) 4092-3 sn 256159 with all-glass cursor (S007), 4092-5 20" sn103094, 4081-5 20" sn860426
  2013.09.20 - Received gift from Giuseppe Bianchi of Italy, Stephen S. Treadwell (repeat donor)of Richardson, Texas, Kent E. Berglund. Ph.D. of Cary, Illinois, all Platinum Tier 1 Friends of the Museum
  2013.09.18 - Received gift from David Ogden (repeat donor)of Spain, a Platinum Tier 1 Friend of the Museum
  2013.09.18 - New Arrivals to be scanned, archived, or put up for adoption
  • 13.09.18.05 Sharp EL-429 Electronic Calculator with Soroban.
  • 13.09.18.01 Joe Klawun No. 11 (Nestler No. 2) missing cursor
  • 13.09.18.02 K&E N4053 no cursor, For adoption/scrap
  • 13.09.18.03 Pickett 120-T narrow stock. For adoption
  • 13.09.18.04 Pickett 120-T Microline, wide stock. For adoption
  2013.09.17 - Germany - Added Feinmessinstitut Joe Klawun No.25 Sys.Rietz (Dec 1938) (Faber-Castell 1/94/394). Gift of Ted Hume
  2013.09.17 - Circular - Added Archimedes Latt-Mayer S.A. 42-8125 circular Photo by João Roberto Gabbardo, Brazil
  2013.09.17 - Americas - Added Archimedes Latt-Mayer S.A. 42-8125 circular Photo by João Roberto Gabbardo, Brazil
  2013.09.17 - United States - Added Guedon with thin film cursor
  2013.09.17 - Faber - Added 1/60/360 and 1/94/394 Joe Klawun Sys. Rietz
  2013.09.17 - Library - Is now open again after the successful fundraiser.
  2013.09.17 - The 2013 fundraiser goal was acheived with 35 donors from 10 countries in 24 days. Thanks to all the Friends of the Museum!
  2013.09.17 - Received gift from Joseph Higgins (repeat donor) of Washington, a Platinum Tier 1 Friends of the Museum
  2013.09.17 - New arrivals to be scanned, archived or put up for adoption.
  • 13.09.17.01 Charvoz-Roos SR-109, has a cracked/chipped cursor at screw
  • 13.09.17.02 Pickett 1025 Spring Design (I love these), cast braces and cursor blocks, corroded paint
  • 13.09.17.03 Pickett N1010-ES Trig. For adoption
  • 13.09.17.04 Sterling Precision 684. For adoption
  2013.09.16 - Received gift from Marion Moon (repeat donor) of Orange, California, a Platinum Tier 1 Friends of the Museum
  2013.09.16 - SR_WhosWho - Added Étienne Lenoir - (1744-1832)Paris, France. mathematical-instrument maker
  2013.09.16 - SR_WhosWho - Added Jean-Noël Lerebours (1761-1840) Paris, France. mathematical-instrument maker and Optician.
  2013.09.16 - Sterling - Re-labeled model numbers, added manuals links,Added 3 Dial-A-Matic adding machines.
  2013.09.16 - New Arrivals to be scanned and archived.
  • 13.09.16.01 - Faber- Castell 1/60/360 dc 37-10 (Sep 1937)
  • 13.09.16.02 - Guedon 448 Pocket slide rule
  • 13.09.16.03 - Faber- Castell 1/94/394 System Rietz dc 38-12 (Dec 1938)
  2013.09.15 - New Arrivals to be scanned and archived or put up for adoption.
  • 3 patches from the USAF 6510th Test Wing with slide rules in emblem
  • 13.09.15.04 Henschel No. 2025 c1930, missing cursor . Possibly made by Albert Nestler, Germany.
  • 13.09.15.03 Faber-Castell - Pocket slide rule with Addiator
  • 13.09.15.02 K&E 4092-5 20" slide rule, needs 1 new lens
  • 13.09.15.01 Lerebours brass sector c1800, a specimen from Ed Chamberlain's collection
  2013.09.14 - Library/MiscUSA - Added(Replaced) M285 Sterling 584 Instructions and M112 Sterling 587 Pocket Slide Rule Instructions.
  2013.09.14.02 - Sterling - Added Added 689 green stock, white slide.
  2013.09.14.01 - Sterling - Added 584 white Early Version - 2 bridges. Corrected mislabeled 585's (were 685), added links to library to some models.
  2013.09.14 - Received gift from Jeremy McCarthy (repeat donor), United Kingdom, a Platinum Tier 1 Friends of the Museum
  2013.09.13 - Received gift from Philippe DEAU of Versailles, France, now a Platinum Tier 1 Friends of the Museum
  2013.09.12.01 - New arrival - Indeco Pocket slide rule, sheet metal stock, plastic slide 2013.09.12 - ISRM_FundRaiser webpage - Changed title to Slide Rule Rescue
  2013.09.12 - Circular - Added (Replaced) Sama & Etani CTCS-552 NUPRO donated by Arthur Anderson, Boulder, Colorado. (Put generic model, no company ads, up for adoption).
  2013.09.12 - KE_Standard - Added (Replaced) 68-1100 sn318318 donated by Richard Plastino. Added to public exhibit. (Moved sn221850 to Slide Rule Rescue)
  2013.09.12 - Received gifts from James Alessio of Midlothian (suburb of Richmond), Virginia, now a Platinum Tier 1 Friends of the Museum
  2013.09.12 - MiscUSA - Added Charvos-Roos unbranded SR-109 (Wood Stock) c1950 donated by Bruce E. Van Deuson, Barnardsville, North Carolina
  2013.09.12 - Added images of the U.S.Navy Test Pilot School Insignia (5 images), screenshots from Mission Impossible (1968) and of George Gregory in 1962, a Flight Chief at Holloman Air Force Base., USAF 6510th Test Wing Patches.
  2013.09.11 - Received gifts from Dr. Paul Tarantolo (repeat donor) of Texas, Robert James of California, David Huff of North Carolina, and Lew Solomon (repeat donor) of New Zealand, all Platinum Tier 1 Friends of the Museum
  2013.09.11 - Pocket Watch - Corrected name of founder of Fowler & Co. to William H. Fowler.
  2013.09.11 - SR_WhoWho - Added info on the founder of Fowler & Co. William H. Fowler and son Harold Fowler.
  2013.09.09 - Received gifts from Steve Seale of Nashville, Tennessee, and Ian Lodge of the UK (repeat donor),now a Platinum Tier 1 Friend of the Museum
  2013.09.08 - Received gift from Lew Solomon, New Zealand, now a Platinum Tier 1 Friend of the Museum
  2013.09.05 - Received gift from David Platt of California. now a Platinum Tier 1 Friend of the Museum
  2013.09.04.01 - Received gift of an unbranded slide rule, made by Acu-Design, same as Charvoz-Roos SR-109D, from Bruce E. Van Deuson, Barnardsville, North Carolina
  2013.09.03.01 - Received gift of K&E 68-1100 Decilon sn318318 slide rule from Richard Plastino of Lakewood, Colorado
  2013.09.03 - Received gifts from Cyril Catt (repeat donor) of Australia; Keith Williamson of Irlam, UK; Carlos Arturo Llovera Rampone of Argentina; Bennie Tschoerner (repeat donor) of Texas; all Platinum Tier 1 Friends of the Museum
  2013.09.01 - Received gifts from Joseph Higgins; Michael Mjelde (repeat donor); Hans Milton (repeat donor) of Sweden; all Platinum Tier 1 Friends of the Museum
  2013.08.31 - Received gifts from William Hill (repeat donor) of Texas; and Jodie Hobson now a Platinum Tier 1 Friends of the Museum
  2013.08.30 - Received gifts from Roi Gift of Washington now a Platinum Tier 1 Friends of the Museum
  2013.08.29 - Received gifts from David Walker of Huddersfield, UK; David Guthrie of North Carolina; Rodrick MacDonald of Toronto Canada, and James Garcia of Arizona; now a Platinum Tier 1 Friends of the Museum
  2013.08.28/M283 - Received donation of K&E Doric 9068 Slide Rule Manual from Ms. Roberta Rosty of Saddle Brook, New Jersey.
  2013.08.27 - Received gift of slide rules from Art Anderson of Boulder, Colorado. Bought as a freshman at Rensselaer Polytechnic Institute in Troy, New York in 1952. RPI is the nation's oldest technological university.
  
  • 13.08.27.01 - K&E N4081-3 sn717411 1952 Mahogany and celluloid edges. Name on black leather case flap (Replace K&E 4081-3 S/N 907527 pre1954)
  • 13.08.27.02 - Charles Bruning 2420 all-plastic 10" slide rule in Cardboard sleeve with flap. (replace S108)
  • 13.08.27.03/M284 - Sama & Etana (Concise) model CTCS-552 Conversion Tables and Circular Slide Rule with manual. 1966. NUPRO advertising promo
  • 13.08.27.04 - Mayline drafting parallels
  • 13.08.27.05 - Rensselaer Polytechnic Institute No 32 drafting pcompass set.
  2013.08.27 - Received gifts from Dick Rose (repeat donor) of Rose Vintage Instruments of Ohio, John Oakhill of Australia, Maria Higgins, Jose Gabriel Fernandez of Spain, now all Platinum Tier 1 Friends of the Museum
  2013.08.26 - Received gifts from Louis Gotlib of Pennsylvania, now a Platinum Tier 1 Friend of the Museum
  2013-08-22 - Memorium - long-time collector friend IJzebrand Schuitema has passed away at the age of 84 in Bilthoven, the Netherlands. . Best known by collectors for co-authoring Calculating on Slide Rule and Disc. His extensive collection was donated to the Arithmeum in Bonn, Germany in 2008.
  2013.08.19 - 2013 Fund Raiser - Temporarily turned off download capability on files in Library until $2000goal is reached.
  2013.08.19 - Library/Books - Added M273 Review Of Mathematics And Slide Rule Gift Of Susan Jackson, Boulder, CO
  2013.08.19 - Library/General - Added scan of CPU-48/P B-47/B-52 Air Navigation Bombing Computer (1964) Instructions 10.4MB PDF
  2013.08.19 - Aerospace - Added scan of CPU-48/P B-47/B-52 Air Navigation Bombing Computer (1964) Instructions 10.4MB PDF, to slide rule entry. Donated by Robert Snyder, Oceanside, California.
  2013.08.19 - Circular - Added scan of CPU-48/P B-47/B-52 Air Navigation Bombing Computer (1964) Instructions 10.4MB PDF, to slide rule entry. Donated by Robert Snyder, Oceanside, California.
  2013.08.18 - EastEurope - Added Gamma-Budapest 2503 darmstadt. REF Herman van Herwijnen's Slide Rule Catalogue
  2013.08.18 - SR _WhosWho - Added photo of Franciscus (Frans) Johannes Vaes jr. Provided by Otto van Poelje
  2013.08.18 - Hemmi - Added(Replaced) No.130 (SRC 24551), 2664 Made In Occupied Japan, 50W. Gifted by Phillip Rodley, Upper Hutt, New Zealand
  2013.08.18 - SRM_Menu - Added 'Pilot Slide Rule' under brands.
  2013.08.18 - MiscJapan - Added Pilot brand catagory.. Added ALCO logo. Added accession numbers.
  2013.08.18 - Faber-Castell - Added(Replaced) 2/83, 67/54B (P029) and 1/54A with Addiator. Gifted by Phillip Rodley, Upper Hutt, New Zealand
  2013.08.18 - SR_Library/Europe - Added Faber-Castell 2/83, 62/83 Instructions. Gifted by Phillip Rodley, Upper Hutt, New Zealand
  2013.08.18 - Italy - Replaced photo 'Cal-Co Patent' Circular Slide Rule with ISRM scan. Gift of Nicolai Donchi of Italy
  2013.08.13 - MiscJapan - Added Fuji 203B gifted by Phillip Rodley, Upper Hutt, New Zealand
  2013.08.13 - K&E_Specialty - Added accession numbers and changed width of thumbnails on long slide rules. Corrected link to Clark McCoy's K&E catalogs
  2013.08.13 - Military - Added accession numbers and changed width of thumbnails on long slide rules.
  2013.08.12 - MiscJapan - Added Fuji No's 42, 51, 88, 102B, 104B, 106, 112, 251, 534S, 535S, 536C,1250S. All images reformatted from HSR Catalogue Herman van Herwijnen's Slide Rule Catalogue hosted at ISRM
  2013.08.12 - Received new acquisitions gifted by Phillip Rodley, Upper Hutt, New Zealand (scanned on 8-13-13)
  
  • 13.08.12.01 - Fuji 203B in plastic sleeve with Instruction sheet. In Model 129 box
  • 13.08.12.02 - Daruma Sanei Soroban 23 digit 1x4 bead abacus
  • 13.08.12.03 - Pilot No. 200-A 8" slide rule - Japanese generic
  • 13.08.12.04 - Sun Hemmi No. 130 System Darmstadt Simplex in cardboard sleeve, has manual on disk
  • 13.08.12.05 - Sun Hemmi 2664 Made In Occupied Japan
  • 13.08.12.06 - Sun Hemmi No. 50W, owned by K,S.Richmond, dc KC.N
  • 13.08.12.07 - 12" Faber Castell 1/54A with Addiator on back, (missing 1 of 2 rear lens) previous owner J.W. Hand of Christchurch, NZ.
  • 13.08.12.08 - 6" Faber Castell 67/54b Darmstadt date code 358 in worn green leather sleeve
  • 13.08.12.09.X/M281 - Faber-Castell 2/83 LogLogDuplex in green/tranparent clamshell case with Instruction Manual. Deaccessioned 23.08.14
  2013.08.12 - SR_WhosWho - In Memoriam - ISRM and the rest of the slide rule community regrets the passing of Dieter von Jezierski, of Germany on June 17, 2013 at the age of 86. He was an employee of Faber-castell and the author of "Slide Rules - A Journey Through Three Centuries" one of the earliest reference books specifically for collectors. He has helped the ISRM quite curator often in the past. He will be sorely missed.
  2013.08.11.01 - Received 'Cal-Co Patent' Circular Slide Rule gift of Nicolai Donchi of Italy
  2013.08.01 - Italy - Added biography and photos of Francis Donchi (1917-1993), Italy, who used the Cal-Co Patent Circular Slide Rule, being sent to ISRM by Nicolai Donchi of Italy
  2013.08.07 - SR_Library/MiscUSA - Added M132 Richardson Direct Reading SR Manual 1909
  2013.08.07 - Richardson - Added accession numbers to two slide rules. Added thumbnails and links to 1909 manuals.
  2013.08.05 - Added biography and portrait of David Hecht, Alexandria, Virginia, to specimens in several galleries. Numerous slide rules were donated from David's collection when he was downsozing.
  2013.08.05 - Added biographies and portraits of John Prince III and Martha H. Prince to specimens in several galleries. Slide rules were donated by wife, Martha of Tucson Arizona.
  2013.08.03 - Added biography of Raymond Anthony Heit (1957-2003) to specimens in three galleries. His collection was donated by wife, Carlee Heit of Houston Texas.
  2013.08.03 - K&E Standard - Added(replaced) 4093-3 LogLogVector sn549118, 4088-3 Polyphase sn357810 AllGlassCursor 1922-1935 (S488), 4088-3 Polyphase sn406555 (S009). gifts of Daniel Swerdlow, Bethesda, Maryland
  2013.08.02 - Faber - Added Instructions thumbnails to 67/39 and 67/87
  2013.08.02 - SR_Library/Europe - Added M274 Faber-Castell Instructions for the use of Castell precision pocket slide rules. Gift of Susan Jackson, Boulder, Colorado
  2013.08.01 - SR_Library/Europe - Added M280 Aristo Multilog 0970 Slide Rule gift of Daniel Swerdlow, Bethesda, Maryland
  2013.08.01 - Aristo - Added Nr.0970 MultiLog dc2FX17(1969) Charvoz model, in box, gifts of Daniel Swerdlow, Bethesda, Maryland
  2013.08.01 - SR_Library/Pickett - Added M277 How to use the Ortho-phase Slide Rule gift of Daniel Swerdlow, Bethesda, Maryland
  2013.08.01 - Pickett - Added(replaced) N500-ES w/square braces(S221), N525-ES (Dereck Ross), No. 1000 magnesium Orthophase in box, gifts of Daniel Swerdlow, Bethesda, Maryland
  2013.08.01 - MiscUSA - Added Agitair (C-Thru) No. 27 Instructions, gifts of Daniel Swerdlow, Bethesda, Maryland
  2013.08.01 - SR_Library/MiscUSA - Added C-Thru No. 27 Instructions, gifts of Daniel Swerdlow, Bethesda, Maryland
  2013.08.01 - SR_Library/Dietzgen - Added M279 1776 Redirule Duplex Instructions, gifts of Daniel Swerdlow, Bethesda, Maryland
  2013.08.01 - Dietzgen - Added(Replaced)1776 5" Redirule (P023), 1746 Maniphase Multiplex sn703397 (S302) gifts of Daniel Swerdlow, Bethesda, Maryland
  2013.08.01 - Circular - Added Cal-Co Patent Circular Slide Rule, Image Contributed By Nicolai Donchi of Italy
  2013.08.01 - Italy - Added Cal-Co Patent Circular Slide Rule, Image Contributed By Nicolai Donchi of Italy
  2013.07.31 - Ephemera - Added two images, on ad a nd one political cartoon from a New Zealand newspaper, contributed by Phillip Rodley, Upper Hutt, NZ.
  2013.07.30 - Aristo - Assigned missing ISRM accession numbers to donated and acquired items.
  2013.07.30 - MiscUSA - Added(replaced) Charvoz-Roos SR-105D, W.J.Boos patent (S563), Charles Bruning 2401, gifts of Daniel Swerdlow, Bethesda, Maryland
  2013.07.30 - Acumath - Added A-51 and Pocket duplex Based on W.J. Boos patent gift of Daniel Swerdlow of Bethesda, Maryland
  2013.07.30 - Acumath - Added(Replaced) 1311 LogLogDeciTrig (S375), 1500 U.S. Govt. LogLogDeciTrig (S388), all gifts of Daniel Swerdlow of Bethesda, Maryland
  2013.07.29 - Calculators - Added retail box image and manual for APF Mark23 Handheld Slide Rule Calculator.
  2013.07.29 - MiscJapan - Added Santok Pocket mannheim, Elastic Stop Nut Corp of America Promo, gift of Daniel Swerdlow, Bethesda, Maryland
  2013.07.29 - Pickett - Added magnesium Model 500 sn09C3296, gift of slide rules from Maureen White of Minneapolis, MN, with picture and bio of her uncle Phillip C. Murray (1920-2008)
  2013.07.29 - SR_Library/USA - Added Acu-Math 44P (M278) - gift of slide rules from Maureen White of Minneapolis, MN used by her uncle Phillip C. Murray (1920-2008)
  2013.07.29 - Acumath - Added(Replaced) 1211 pocket duplex, gift of slide rules from Maureen White of Minneapolis, MN, with picture and bio of her uncle Phillip C. Murray (1920-2008)
  2013.07.25 - Received gift of slide rules from Maureen White of Minneapolis, MN used by her uncle Phillip C. Murray (1920-2008)
  
  • 13.07.25.01/M278 - Magnesium Acumath 1211
  • 13.07.25.02 - Magnesium Pickett Model 500 Ortho-Phase
  • 13.07.25.03 - K&E Triangle Drafting scale (wood)
  2013.07.17 - In Memoriam - ISRM regrets the passing of Dieter von Jezierski, of Germany (1927-2013) at the age of 86. He was an employee of Faber-castell and the author of "Slide Rules - A journey Through Three Centuries" one of the ealiest books specifically for collectors. He has helped the ISRM quite curator often in the past. He will be sorely missed.
  2013.07.06 - Friends - Added Richard Burns for gift.
  2013.07.06 - Graphoplex - Added No. 691a Neperlog - Hyperbolic duplex, image from Rod Lovette Collection
  2013.07.06.01 - Ephemera - New acquisition of pair of gold Slide Rule Cuff Links.
  2013.07.05/M277 - Received gift of C.N. Pickworth's The Slide Rule 17th printing, 1920, from Phillip Rodley, New Zealand
  2013.07.05 - SR_WhosWho - Inducted Daniel Swerdlow of Bethesda, Maryland. A collector and contributor of slide rules to ISRM
  2013.07.05 - Japan - Added(Replaced) Uchida Yoko Generic Mannheim Slide Rule. Gift Of Norma Tanner. Santok OEM Pocket slide rule , Seaforth brand, gift of Phillip Rodley, NZ
  2013.07.05 - Australia - Corrected Html codes for degrees and renamed files for W&G 443
  2013.07.05 - Nestler - Added c1900 slide rule with Slide Rule Data Slips, Compiled by C.N. Pickworth, Wh. Sc. Donated by Phil Rodley, NZ
  2013.07.05 - PIC/Thornton - Added P.I.C. 121 and 131 Electro, gifts from Phillip Rodley, of UpperHutt, New Zealand.
  2013.07.05 - France - Added(replaced) Marc Electricien No 5 pocket slide rule, with manual (HSRC). Donated by Phil Rodley, NZ
  2013.07.05 - Aerospace - Added Pilot Balloon (pibals) Slide Rule - Mark 5. Sent from New Zealand by Phillip Rodley. Included Antarctica images of Pilot balloons
  2013.07.04 - Faber - Added 67/87 Rietz belonging to Jim Rodgers, donated by daughter Susan Jackson. Added accession numbers to donations given by David Hecht in 2009
  2013.07.04 - Aerospace - Added CPU-48/P B-47/B-52 Air Navigation Bombing Computer (1964), donated by Robert Snyder, Oceanside, California.
  2013.07.04 - Circular - Added CPU-48/P B-47/B-52 Air Navigation Bombing Computer (1964) and Concise 271
  2013.07.04 - K&E - Added(replaced) 4088-3 with all-glass cursor (S451), N4041-3 sn637284, 4053-3 c1956 (S385)
  2013.07.04 - Dietzgen - Added(replaced) 1767 National belonging to Jim Rodgers, donated by Susan jackson
  2013.07.04 - Acu-Math - Added(replaced) 90A (S469), 400B Wide Stock, 400B Narrow Stock,
  2013.07.03. - Received gift of slide rules and books from Daniel Swerdlow , Bethesda, Maryland for the support of the galleries and fund raising efforts.
  
  Slide Rules
  • 13.07.03.01 - Acu-Math No. 1311 Log Log Decimal Trig Duplex, Plastic laminated magnesium, leather sleeve, (replace S375)
  • 13.07.03.02 - Acu-Math No.1500 Log Log Decimal Trig Duplex (Marked U.S.) Plastic stock. to Fundraiser.
  • 13.07.03.03 - Charvos-Roos SR-105D (Acu-Design, based on Boos patent). Plastic Laminated wood stock, Missing rear hairline. (restore & replace S563)
  • 13.07.03.04 - Acu-Math No. A-51 (Acu-design, Based on Boos Patent). Plastic laminated magnesium stock, finger holes. (New to Gallery)
  • 13.07.03.05 - Pocket version of Boos patent, Made in USA, same as Charvoz-Roos PSR-101D Duplex 1949-1952, but missing brand name (Acu-Math?) (new to Charvos Roos)
  • 13.07.03.06 - Charles Bruning Co. 2401 Pocket Slide Rule, Made in USA. Early cursor, Marked Morris H. Freidman (new to gallery)
  • 13.07.03.07/M275 - Santok (Japan) Pocket Slide Rule, with Promo Ads., Instructions (new to gallery)
  • 13.07.03.08/M276 - C-Thru Pocket Slide Rule No.27 With Instructions Rebranded as Agitair
  • 13.07.03.09 - Aristo Nr.89 Rietz Pocket Slide Rule, dc 3FX10 (1969), in leather sleeve, Instructions (duplicat for fund raiser)
  • 13.07.03.10 - Pickett N600-ES (aluminum) Pocket Slide Rule, Modern Logo, 'hooked' braces, leather sleeve (replace ISRM 12.06.24.12)
  • 13.07.03.11 - Pickett 160-T Plastic Pocket Slide Rule, Made in Mexico, in retail box, fiber sleeve (duplicate for fund raiser)
  • 13.07.03.12/M279 - Dietzgen 1776 Redirule Duplex, in retail box w/ manual & leather sleeve. Promo marked KOPPERS. (replace P023)
  • 13.07.03.13 - K&E 4088-3 Duplex, sn407724, Improved cursor (intact). Model number of right end of slide. (replace S009).
  • 13.07.03.14 - Pickett CREI Model N531-ES, round black logo,slight oxidation on braces. (Duplicate to fund raiser)
  • 13.07.03.15 - Pickett Model N-500-ES HI Log Log, Curved finger braces, round black logo, ©1962, in plastic film sleeve, (duplicate for fund raiser)
  • 13.07.03.16 - Pickett Model N-525-ES Statrule ©1965, in black leather sleeve w/belt loop. round black logo. (duplicate replaced by 23.03.08.01)
  • 13.07.03.17 - Pickett Model N-500-ES Log Log, square braces, in brown leather sleeve w/belt loop. round black logo. (replace S221)
  • 13.07.03.18 - Pickett (P&E) 1000 Ortho-phase Duplex, snA048532, magnesium, metal cursor, P&E triangle logo, ©1948, black dot CI scale labels, in box w/cloth sleeve, Model 1000 manual (SR & Manual) new to gallery)
  • 13.07.03.19 - Dietzgen CatNo.1746 Maniphase Multiplex, sn703397, old scale set/new cursor design/Mahogany edge, in black leather sleeve, w/conversion table insert (new to gallery)
  • 13.07.03.20 - Post, Frederick, No1447, Sun Hemmi dc HK, Post logo upper right on stock (sligth differences - new to gallery)
  • 13.07.03.21 - Post, Frederick, No1447, Sun Hemmi dc FJ, no Post logo, red cardboard sleeve. (duplicate for fund raiser)
  • 13.07.03.22/M280 - Charvos Roos/Aristo 970 Multilog duplex in box, dc2FX17(1969), leather sleeve, manual ©1954, warranty #140575 (replace S065)
  • 13.07.03.23 - Diwa Commercial No.301 (early), RR track scales, screw reinforced laminates, in cardboard sleeve. (New to gallery)
  • 13.07.03.24 - British Thornton AD150 Advanced, in plastic hardcase sleeve (replace S092)
  • 13.07.03.25 - K&E 68-1892 K12 Prep, in clear mylar sleeve. (duplicate for fund raiser)
  • 13.07.03.26 - K&E 4093-3 Vector Duplex, sn545118 Improved cursor (intact), leather sleeve missing flap. with equivalents insert (Add to Gallery)
  • 13.07.03.27 - K&E N4080-3 Improved cursor (severe KERCS), cardboard sleeve,
  • 13.07.03.28 - K&E 4088-3 All glass cursor (one side chipped), sn 357810, leather sleeve - stamped Lawrence Haner.(replace S488)
  • 13.07.03.29 - K&E N9081-3 Doric, sn30422, all plastic stock, in leather sleeve w/ belt loop. Beginnings of KERCS (duplicate for fund raiser)
  • 13.07.03.30 - K&E 4081-3 Log Log Duplex Decitrig, sn566712, Improved cursor (beginning KERCS cracks), black sleeve in box.
  • 13.07.03.31 - K&E 4093-3 Vector, sn322624, Improved cursor (severe KERCS), round K&E logo
  • (4x) empty sleeves
  Books and Manuals
  • L.W. Rosenthal - Dietzgen, Mannheim Slide Rules, 1905/1908, 64pp.
  • E. Justin Hills, US Armed Forces EM906 - A course in the Slide Rule and Logarithms 1938/1943, 106pp.
  • J.J. Clark - The Slide Rule, (hardbound) 1909, 63 pp. (new to library)
  • Paul E, Machovina - A Manual for the Slide Rule, 1950 McGraw-Hill,78pp.
  • Pickett Pocket Catalog 608 - Slide Rules, Scientific & and Educational Equipment
  • Allen R. Cullimore - Euegene Dietzgen Co., The mannheim Slide Rule,1925, 80pp.
  • Charles O. Harris, US Armed Forces MB858 - Slide Rule Simplified, USAFI course (with letter), Reprinted 1943
  • Sommers, Drell,Wallschaeger - The Slide Rule and How to Use it, hardbound workbook with Lawrence 10B slide rule (with Magnifyer), 208pp.
  • Post (E.I.FiesenHeiser) Versalog Slide Rule Instructions, Hardbound, 1963 edition, 120pp.
  • Pickett (Maurice L. Hartung) - How to Use Log Log Slide Rules, 1953, 96pp.
  • M277 Pickett (Maurice L. Hartung) - How to Use Ortho-Phase Duplex Slide Rules, Model No. 1000, 1948, 32pp (new to gallery)
  • K&E (Kells, Kern, Bland) Slide Rule manual - Log Log Duplex Trig No. N4080, 1943/1948, 124pp.
  • K&E Supplement - The DI Scale, No. 4080, 1953, 8 pp.
  • K&E (Kells, Kern, Bland) - Polyphase Duplex DeciTrig Slide Rule Manual, No. 4071, 1939, 88pp.
  • K&E (Willian E. Breckenridge) - Polyphase Slide Rule Manual, No. N4053, 1938, 88pp
  • K&E (Willian E. Breckenridge) - Polyphase Slide Rule Manual, No. N4053, 1938/1944, 88pp (with ads in back)
  • K&E (Willian E. Breckenridge) - Polyphase Slide Rule Manual, No. N4053, 1938/1944, 88pp (used by donor Dan Swerdlow)
  • K&E (Willian E. Breckenridge) - The Mannheim Slide Rule , No. 4041, 1927, 76pp
  • K&E (Willian E. Breckenridge) - The Mannheim Slide Rule , No. N4041, 1938, 78pp
  • M276 Aristo Multilog 0970 (Charvos-Roos) - ©1954, 28pp
  2013.07.02.01 - Received aquisition of APF Mark23 Slide Rule Calculator in Box
  2013.06.28 - Received gift of slide rules from Susan Jackson of Boulder, Colorado, belonging to her father Jim Rodgers (1928-2012), to be used in support of ISRM. Husband Ken Jackson donates his K&E Decilon.
  
  • 13.06.28.01 - Concise 271 Circular with Instruction booklet, (add to gallery)
  • 13.06.28.02 - Dietzgen 1767 National. Missing cursor replaced with one from an early Acumath 400 (add to gallery)
  • 13.06.28.03 - Faber Castell 67/87 Rietz pocket slide rule, with instructions
  • 13.06.28.04 - K&E 68-1100 Decilon 10 in Leather case. Owned by Ken Jackson as a student, switched major to accounting and finance. was sitting in a box ever since.
  • M273 - Review of Mathematics And Slide Rule, Nuclear Warfare School, Atlantic Nuclear Weapons Training Center (add to library)
  • M274 - Faber-castell Instructions for 67/39, 67/91, 67/87, 67/87R, 67/98b, 67/98R (add to library)
  2013.06.28 - Faber - Corrected scale set on 2/82 dc1157 ISRM 11.10.26.01
  2013.06.27 - Added Lawrence 10-C Engraver's And Photographer's Proportional Calculator, belonged to Charles Meyerson, donated by daughter Judy Gorin
  2013.06.26.01/M282 - Received donation of B-47/B-52 Air Navigation/Bombing slide rule from Robert Snyder, Oceanside, CA. Belonged to his father Earl L. Snyder.
  2013.06.25 - Received donation of 31 slide rules from Norma Tanner, 545 Sedgewick, Libertyville, IL 60048, that she provided to students, over her teaching career Most will be destined for the ISRM Slide Rule Loaner Program
  
  • 13.06.25.01 Acu-math 511 Mannheim Professional (replaces S224)
  • 13.06.25.02 Acu-math 90A Mannheim Trig, Magnesium (c1945) (replaces S469)
  • 13.06.25.03 Pickett N902-ES Aluminum Radius Braces Modern Logo (duplicate)
  • 13.06.25.04 Acu-math 400 Mannheim Trig, Plastic narrow stock, Rounded Braces, oval logo (c1968) Replaces current ISRM artifact.
  • 13.06.25.05 Acu-math 400 Mannheim Trig, Plastic wide stock, Rounded Braces, oval logo (c1968) Replaces current ISRM artifact.
  • 13.06.25.06 K&E 4088-3 All-glass cursor (1913-1921)Lot#38 (replace S451)
  • 13.06.25.07 K&E 4053-3 Plastic Back Stock, Mahogony upper stock and slide (c1956) (replace S385) needs cursor spring restored
  • 13.06.25.08 K&E N4041 sn637284 Mahogony (c1956) (replace s/n 715559)
  • 13.06.25.09 Uchida Yoko Co.Japan, Generic Mannheim Slide Rule,c1970.(replace S104) (like the Pickett 120 and Acu-Math 400)
  • 13.06.25.10 Sterling 589 w/Green Slide Manheim (replace S151)
  • 13.06.25.11 K&E 4058W Beginners Slide Rule, Painted wood, Bright Steel Cursor (marked Ray Fine-AET)
  • 13.06.25.12 K&E 4058 Beginners Slide Rule, bare wood, Missing Cursor. Possible resoration. Replace S396
  • (3x)Acu-math 400 - to be used in Slide Rule Loaner program
  • 13.06.25.13 Acu-math 400B - Wide Stock, Square braces, Oval Logo, Equivalents on back.
  • 13.06.25.14 Acu-math 400B - Narrow Stock Oval Logo Wrap Over Cursor, Equivalents on back.
  • (10x)Pickett 120 (early) - to be used in Slide Rule Loaner program
  • (1x)Pickett 120 Trainer, Black braces - to be used in Slide Rule Loaner program
  • (2x)Sterling 584 white - to be used in Slide Rule Loaner program
  • (2x)Pickett 120 Instructions
  2013.06.25 - Received another donation of 8 slide rules from Phillip Rodley, Upper Hutt, New Zealand
  
  • 13.06.20.01 - Pilot Balloon Slide Rule - Mark 5, 20 inch with 4 cursors, in Wood box
  • 13.06.20.02 - PIC/ Thornton 121 Electro Slide Rule
  • 13.06.20.03 - PIC/ Thornton 131 Electro Slide Rule, Has cracked glass lens
  • 13.06.20.04 - Pickworth (Faber or Nestler)
  • 13.06.20.05/M269 - Santok (Japan), Seaforth Promo pocket slide rule with manual
  • 13.06.20.06/M270 - Marc Electricien No 5 pocket slide rule, with manual (slightly warped).
  • 13.06.20.07 - Acumath No. 400 - Plastic Wide Stock, wrap over cursor, Oval Logo
  • 13.06.20.08/M271 - Faber Castell 157/87 Rietz dc271 cm scale (no cursor, replaced w/Dietzgen 1765 Basik) with F-C Slide Rule Primer manual and Instructions to gallery
  2013.06.10.01 - Received donation of Lawrence 10-C Engraver's And Photographer's Proportional Calculator Slide rule from Judy Gorin, St. Louis, Missouri. Belonged to father, Charles Meyerson.
  2013.06.10 - Library/USA - Received donation of Lawrence Slide rule Instruction Book (replaced M89)
  2013.06.05 - Soviet - Added flags for Georgia, Estonia, Lithuania and Latvia.
  2013.06.04 - Patents/US - Added US2,701,687 Wilfred J. Boos Patent
  2013.05.30 - Calculator - Added Litronix 1603 solid state slide rule calculator, sn 216455, acquired through contributions.
  2013.05.29 - Circular - Added Dempster RotaRule Model AA sn2189, sold as Dietzgen 1798
  2013.05.29 - SR_WhosWho - Inducted Assoc. Prof. Allan Bromley (1947-2002) of Australia. Much of his collection is in the Powerhouse Museum in Sydney, Australia. Some images used on ISRM.
  2013.05.28 - Received new acquisition of Dietgen model of The Depmster Rotarule, contributed in part by Dick Rose, of Rose Vintage Instruments
  2013.05.28 - Ephemera - Added photos of Joe Soper's K&E exhibit and of the Mural at La Guardia Airport.
  2013.05.23 - Post/Hemmi/Ricoh/Circular/K&E galleries - added ascesion numbers to donated slide rules
  2013.05.21 - MiscUSA - Added sub-catagory and Bill-Mar Sp. Co. Concrete Calculator No.24 gift of Jeremiah Whitney, Louisville, Colorado
  2013.05.21 - Ricoh - Added(Replaced Compass 1315 (S506) gift of Jeremiah Whitney, Louisville, Colorado
  2013.05.19 - Received gift of two slide rules from Jeremiah Whitney, Louisville, Colorado
  
  • 13.05.19.01 - Bill-Mar Sp. Co. Concrete Calculator No.24
  • 13.05.19.02 - Ricoh Compass 1315 dc P.S-3
  2013.05.13 - USSR/Soviet - Added OAO Kalibr-Moscow Circular Slide Rule Calculator Photo By Dushan Grujich Collection, Australia
  2013.05.13 - Circular - Added OAO Kalibr-Moscow Circular Slide Rule Calculator Photo By Dushan Grujich Collection, Australia
  2013.05.13 - KE - Added (Replaced) 4035 Lot453 1915 Finely Divided, and 4080-3 sn352343, 1939-1949 scale set , 4th variation, has Exponent range labels marked with lunate Epsilon symbol (ϵ) on Log Log scales.
  2013.05.13 - SR_WhosWho - Inducted Prof. Erhard_Anthes of Germany, Franciscus Johannes Vaes (1867-1943) of The Netherlands, Albert Rohrber (1887-1966) of Germany
  2013.05.09 - KE - Added (Replaced) 4088-5 snNone, 4083-3 sn475632 1961, 4092 1916-1921 (S426), 4091-3 1933, deleted (S252) 4083-3, (S038) 4092-3
  2013.05.08 - Nestler - Added 1905 Model No20 Mannheim and 1937 Model No21 Darmstadt
  2013.05.08 - Thornton - Added PIC Pocket Slide Rule, Railroad Track style scales, Gift of Phillip Rodley of UpperHut, NZ
  2013.05.08 - Blundell - Added Westec Electronics Slide Rule, Gift of Phillip Rodley of UpperHut, NZ
  2013.05.08 - British(United Kingdom) - Added Westechno catagory and Westec Electronics Slide Rule (made by BRL/Blundell), Gift of Phillip Rodley of UpperHut, NZ
  2013.05.08 - Hemmi - Added early Hemmi 1 (French Export), and Hemmi 80K Electro with two cursors, Gift of Phillip Rodley of UpperHut, NZ
  2013.05.08 - Ephemera - Added picture of Hall Hibbard & Clarence "Kelly" Leanord Johnson holding a K&E slide rule. Found by Ingo Elsen in Germany.
  2013.05.07 - Rarities - Added George Bousfield's "Vade Mecum Slide Rule" Gifted to ISRM by Phillip Rodley of Upperhut, New Zealand
  2013.05.07 - Dietzgen - Added 1746 sm702167 Early Cursor, Gift of Barnara Emmett, Owned by her father William Page Morris
  2013.05.06 - SR_Terms/Encyclopedia - Added Koh-I-Noor Hardtmuth and Koh-I-Noor Slide Rules Fabrik Pvt. Ltd
  2013.05.05 - Graphoplex - Made minor edits to existing gallery to correct HTML ASCII codes
  2013.05.05.02 - New slide rule acquisition K&E 4083-3 sn475632 1961
  2013.05.05.03 - New Calculator acquisition - 1982 TI-55-II with 'slide rule' on the box.
  2013.05.05.01 - New slide rules acquisition K&E 8" Polyphase 4035 Finely Divided. all glass cursor.
  2013.05.04.01 - Received donation of Dietzgen 1746 sn702167 from Barbara Emmett, owned by father W.P Morris. Bio and picture included. Has Deteriorated cursor.
  2013.04.26 - Received gift of slide rules purchased by Phillip Rodley in New Zealand
  
  • 13.04.26.01 - The "Vade Mecum Slide rule" Designed for the timber trade by George Bousfield, Grimsby, Patent 12806
  • 13.04.26.01.M257 - The "Vade Mecum Slide rule" manual
  • 13.04.26.02 - Westec Electronics Slide Rule by Westechno Ltd, Devon England
  • 13.04.26.02.M258 - Westec Electronics Slide Rule manual
  • 13.04.26.02.M259 - Four-Figure Tables by C.Godfrey and A.W.Siddons
  • 13.04.26.03 - PIC A.G.Thortnon pocket slide rule, railroad track divisions, green cardboard sleeve
  • 13.04.26.04 - Hemmi 80K dcFL Electro Slide Rule with two cursors
  • 13.04.26.05 - Hemmi 1 Slide Rulemissing lens in cursors
  • 13.04.26.06 - Rabone No1190 four fold Joint rule
  2013.04.23.01 - New acquisition of K&E 4091-3 sn460643 Orig. Owner W.H.Dewitt
  2013.04.20.01 - Donations - Received "The Elemental Slyd Rul" slide chart from Dr. Daniel Thomas, South Hadley, MA. Belonged to father Dr. Paul Thomas.
  2013.04.13 - SR_Library/Europe - Added M256 Aristo 40128/IWA 09102 Manual
  2013.04.13.01 - Calculators - Added 1973 Melcor Answermath SR8 Slide Rule Calculator
  2013.04.12.01 - New acquisition of K&E 4092-3 noSN All-Glass Cursor PERFECT. to replace
  2013.04.12.02 - New acquisition of Nestler No20 Rietz, Railroad track scales, from Bulgaria
  2013.04.11.01 - Acquired Vernon Gold Slide Rule Tie Clasp
  2013.04.11 - Calculators - Added Litronix 1602 Solid State Slide Rule
  2013.04.11 - Adders - Placed additional information about Lightning Calculators and Addometers.
  2013.04.10 - Pickett - Added N4-T and Model 3 Multiphase Log Log donated by Jeff Smith, Fort Atkinson, Wisconson
  2013.04.10 - Donations - Received 2 slide rules from Jeff Smith, Fort Atkinson, Wisconson
  
  • 13.04.10.01 - Pickett N4-T Vector Log Log, belonging to Jeff Smith, LtCol, USAF, Ret.
  • 13.04.10.02 - Pickett Model 3 Multiphase Log Log, snHC037844, belonging to Jeff Smith's father, Robert J. Smith (1923-1997)
  2013.04.10 - SR_Library/Books - Added the Oughtred Society Publication "All About Slide Rules"
  2013.04.09 - SR WhosWho - Added Phillip Rodley of New Zealand. Collector, Donor and contributor to ISRM.
  2013.04.04.01 - New acquisition of Nestler No21 Darmstadt, Railroad track scales, from Arizona
  2013.04.03.01 - Aristo - Added Aristo 40128 Universal Pocket Slide Rule (Wire) - ©1965 Dennert & Pape. aka: Universal Rechenschieber (Draht), Règle À Calculer Universal (Fil), Regla De Universal (Alambre)
  2013.04.03.02 - Adders - New acquisition of an ADD-A-mite Pocket Calculator with box and Instructions
  2013.04.02 - SR_Library/USA - Added (Replaced) M254 Sterling Metric Converter Instructions (M20) donated by Albert Klumpp, Arlington Hts, IL
  2013.04.01 - Received donation from Albert Klumpp, Arlington Hts, IL now a Friend of the Museum
  2013.04.01 - Received donation from David White now a Friend of the Museum
  2013.04.01 - Received donation of two slide rules used and gifted by Albert Klumpp , Arlington Hts, IL
  
  • 13.04.01.01 - Sterling Metric Converter (yellow slide, white stock) with Manual
  • 13.04.01.02 - Concise Slide Rule and Reference Tables by Sama & Etani with manual
  2013.04.01 - KE_Standard - Added N9081-3 photo belonging to Mercury/Gemini Astronaut Gordon Cooper
  2013.03.30.01 - Calculators - Added Litronix 1602 slide rule calculator sn46836, acquired through contributions. 2013.03.30 - Rarities - Added Palmer's Computing Scale, 11 inch square. Image from 2009 Phillip Wiess Auctionn
  2013.03.30 - British/Stanley - Added Cooper 100 inch slide rule photos, from 2009 Phillip Wiess Auction
  2013.03.30 - SR WhosWho - Added William Ford Stanley. Inventor of a dividing Engine and maker of scales, including for Fowler Cylindrical SR
  2013.03.29 - Aristo - Added Early D&P ALTONA with split window cursor (Mannhiem), photo contributed by JAcek Szukowski Collection, Poland.
  2013.03.29 - Nestler - Added Early Pocket Mannhiem, photo contributed by JAcek Szukowski Collection, Poland.
  2013.03.29 - Manuals - Added Controller 75R 110R 200R instructions, National Rechenwalzen Instructions
  2013.03.28 - Circular - Added Controller 75R and 110R Calculator Circular Slide Rules each with manuals
  2013.03.28 - Germany - Added Controller 75R and 110R Calculator Circular Slide Rules each with manuals
  2013.03.27.01 - Acquired Harrow Mark Reducer, Aston & Mander Makers, Soho, England from Chris Miles, Bournemouth, England, UK
  2013.03.25 - EastEuro - Added SKALA slide rule images from Giovanni Breda Collection
  2013.03.25 - Germany - Added E.O. Richter section, 4 images from Hermann's Catalog and Giovanni Breda Collection
  2013.03.24 - EastEuro - Added Logar section and Logar. Darmstatd slide rule, image provided by Giovanni Breda, Italy.
  2013.03.22 - EastEuro - Added SKALA cooperative background information.
  2013.03.20 - EastEuro - Added photos of Polish slide rules contributed by JAcek Szukowski Collection, Poland.
  2013.03.17 - Switzerland - Added National Rechenwalze Modell 20 System Billeter,owned by John William Radu , and partially donated by his grandson Robert A/ Ecker. Included bio's and family photos
  2012.03.16 - Associates - Created new folder for JAcek Szukowski
  2013.03.15 - New Acquisitions - National Rechenwalze Modell 20 System Billeter, Controller 75R and 110R Calculator Circular Slide Rules each with manuals
  
  • 13.03.15.01 - National Rechenwalze Modell 20 System Billeter,owned by John William Radu
  • 13.03.15.02 - Controller 75R Circular Slide Rule
  • 13.03.15.03 - Controller 75R Circular Slide Rule
  • M253 Controller 75R and 110R Circular Slide Rule Instructions
  • M254 National Rechenwalze Modell 20 System Billeter Instructions
  2013.03.15 - Circular - Added four Controller Calculator Circular Slide Rules
  2013.03.15 - Germany - Added four Controller Calculator Circular Slide Rules
  2013.03.14 - SR_Library_Europe - Added Nestler Slide Rule Brief Instructions, 4 pages
  2013.03.14 - PocketWatch - Added (Replaced) Fowler's Universal Calculator (Replaced Rod Lovett Collection). Obtained through Scott Reynold's Vintage Calculators
  2013.03.14 - Circular - Added Miller Dial Circular Slide Rule, Amphenol Circular Slide Rule & RF Smith Chart. The Amphenol donated bt Phillip Rodley of New Zealand.
  2013.03.14 - SR_WhosWho - Added Albert John Anido (1883-1949) inventor of 'The Anido Slide Rule'.
  2013.03.14 - British - Added 'The Anido Slide Rule', designed by Albert John Anido (1883-1949)
  2013.03.14 - Pickett - Added N904-ES Trig and Decimal Keeper Speed Rule. Acquired at OS winter meeting
  2013.03.13 - EastEuro - Added UGK, Terta, Tehnolemn. Moved from USSR/Soviet gallery. on suggestion by Jacek Szukowski, Poland.
  2013.03.13 - Soviet - Deleted UGK, Terta, Tehnolemn and moved to East Europe gallery. on suggestion by Jacek Szukowski, Poland.
  2013.03.11 - SRM_Home - Added News and contestant photo of Irvine, TX World (Texas) Slide Rule Champioships (at bottom of page).
  2013.03.11 - SRM_Menu - Repaired misdirected links for Gamma, Skala, Logarex and Curta, in manufacture's brands section
  2013.03.08 - SR_Library/Books - Added reference and purchasing information to Our Worlwide Knowledge of Calculating Machines by Dr. Detlef Zerfowski
  2013.03.08 - SR_WhosWho - Added Dr. Detlef Zerfowski, author of the book Our Worlwide Knowledge of Calculating Machines
  2013.03.01 - Rarities - Added reference and link to the Oughtred Society Rarities Gallery
  2013.02.26 - Rarities - Added Edward Roberts, Makers, Dove CourtOld Jewry, LONDON, 4-sided Boxwood Rule
  2013.02.26 - Lawrence - Added 8-B, donated by Henry Eck, Catonville, Maryland, belonging to a Mary Elizabeth Exley
  2013.02.26 - Italy - Added Marcantoni 25RE Electro-Rietz (Ebay acquisition to represent Italy in exhibits.
  2013.02.26 - Japan - Added Fuji No201P, Hope 52-G, and Royal 1091, all donated by Phillip Rodley, New Zealand.
  2013.02.25 - France - Added Maurice Damien Universal slide rule, donated by Phillip Rodley, New Zealand. Also 3 reference Maurice Damien slide rules from photocalcul.com in France
  2013.02.24 - Ephemera - Added picture of students at Gulf H.S. New Port Richey, Florida, Manhattan Project Physicist Enrico and Laura Fermi, and a Lionel-Porter Mastercraft Mathematics set from Carl Schwent Collection
  2013.02.23 K&E_Standard - Added(Replaced) 68-1130 (P045) Pocket Decilon in Retail Box, 4095-5 Merchant Rule c1922 all glass frameless cursor. and 4053-5 lot 79 all glass frameless cursor.
  2013.02.23 Pickett - Added(Replaced) N600-ES NOS, N600-T red inverse scales Blk Logo, N904-ES, Corrected scale identifyers on N600-T/ES, N3P-ES(P072), N3P-T(P073), N4-T/N600-T Twin Pack (S130)
  2013.02.21.01 - Donations - Received Lawrence 8" slide rule donated by Henry Eck, Catonsville, Maryland
  2013.02.20 - New Acquisitions - Donations and purchases from Oughtred Society Meeting in since last update.
  
  • 13.02.20.01 - Marcantoni 25RE
    
  • 13.02.20.02 - The Anida Slide Rule - acquired on loan from Rose's Vintage Instruments.
    
  • 13.02.20.03 - Pickett N904-ES TrigExponential with Decimal Keeper
    
  • 13.02.20.04 - Pickett N4-T/N600-T DualBase LogLog TwinPack
    
  • 13.02.20.05 - K&E_68-1130 Pocket Decilon in BoS NOS, N600-T red inverse scales Blk Logo, N904-ES, Corrected scale identifyers on N600-T/ES, N3P-ES(P072), N3P-T(P073), N4-T/N600-T Twin Pack (S130)
    
  2013.02.21.01 - Donations - Received Lawrence 8" slide rule donated by Henry Eck, Catonsville, Maryland
  2013.02.20 - New Acquisitions - Donations and purchases from Oughtred Society Meeting in since last update.
  
  • 13.02.20.01 - Marcantoni 25RE
    
  • 13.02.20.02 - The Anida Slide Rule - acquired on loan from Rose's Vintage Instruments.
    
  • 13.02.20.03 - Pickett N904-ES TrigExponential with Decimal Keeper
    
  • 13.02.20.04 - Pickett N4-T/N600-T DualBase LogLog TwinPack
    
  • 13.02.20.05 - K&E_68-1130 Pocket Decilon in Box
    
  • 13.02.20.06 - Pickett N3P-ES NOS in Box
    
  • 13.02.20.07 - Pickett N3P-T NOS in Box
    
  • 13.02.20.08 - K&E 4095-5 Merchant Rule 1922 sn55071, no cursor (used cursor from 4088-5), Donated by Martha Prince
    
  • 13.02.20.09 - K&E 4053-5 Polyphase Rule AllGlassFramelessCursor 1915-1922 snNone
    
  • 13.02.20.10 - Pickett N803-T/N600-T DualRule LogLog TwinPack
    
  • 13.02.20.11 - Edward Roberts, Makers, Dove CourtOld Jewry, LONDON, 4-sided Boxwood Rule
    
  • 13.02.20.12 - K&E 4088-5 AllGlassFramelessCursor 1922 lot66, no cursor(added cursor from 4092-3), Donated by Martha Prince
    
  • 13.02.20.13 - Pickett N600-T Red Inverse Scales
    
  • 13.02.20.14 - K&E 4053-3 side K scale 1915-1921 lot41, no cursor (added ISRM Replica AllGlassFramelessCursor), to duplicate
    
  • 13.02.20.15 - K&E 4053-3 sn44 1922 side K scale with 1936 Improved Cursor JohnPrince, to duplicate
    
  2013.02.16 - SR_WhosWho - Added Martha Prince and Carl Schwent while at Oughtred Society Winter Meeting in Tucson, Arizona.
  2013.02.13 - Donations - Received Donation of slide rules from Phillip Rodley of Upper Hutt, New Zealand.
  
  • 13.02.13.01 - Maurice Daimen Universal SlideRule
    
  • 13.02.13.02 - Hope 52-G SlideRule
    
  • 13.02.13.03 - Royal 1091 LogLog
    
  • 13.02.13.04 - Fuji Quate Log No201P,
    
  • 13.02.13.05 - Amphenol Circular Slide Rule & RF Smith Chart.
    
  2013.02.09-13 - Display - building displays for a least 4 tables to be seen at the Pima Air Museum on Feb 16.
  2013.02.03.03 - Calculators - Added Prinztronic SR88M, acquired through contributions.
  2013.02.03.02 - Calculators - Added Litronix 2140 snA13961, acquired through contributions.
  2013.02.03.01 - Calculators - Added Unisonic 738, acquired through contributions.
  2013.02.02.01 - Calculators - Added Commodore SR9190R, acquired through contributions.
  2013.01.27 - Calculators - Added a over 30 acquistions, from the last three months (see list below) to the gallery, along with exhibit placards, in preparation for an exhibit in Tucson, Arizona.
  
  • 12.09.24.01 - Faber-Castell TR-2 Slide Rule w/ ESR, sn025120910, INOP, Germany, Scott Reynolds.$300
  • 12.09.24.02 - Fowler's Universal Calculator , Manchester, England, Scott Reynolds.$200
  • 13.01.27.01 - TI-45 sn478125 dc3578RCL, Blue VFD, European version of SR-40, made in Italy. works 9v bat.
  • 13.01.27.02 - Commodore SR7919, sn008053, USA, red LED, 9v bat, works.
  • 13.01.27.03 - Casio J-1 1983, Japan, Electronic Calculator, Min: Sqr Root, VFD, 2 AA works, acquired from Greece
  • 13.01.27.04 - Compex SR-10, Made in Tiawan, Min: Sqr Root, works 2AA.
  • 13.01.27.05 - Melcor SC-535, sn39340, USA, red LED, uses 4 3/5 NiCads (need replaced), untested
  • 13.01.27.06 - Sperry-Remington 809SR, sn2110811, blu VFD, Japan, 5AA works,
  • 13.01.27.07 - Berkey 4030, sn C247165, USA, 2 new AA NiCds, partial display, orange VFD, Scott Reynolds.
  • 13.01.27.08 - Radofin Professional Slide Rule, Model 857, sn10125, HongKong, works w/ 6v jumpered, missing back cover, battery cartridge missing terminal, Scott Reynolds.
  • 13.01.27.09 - Binatone Junior Slide Rule, green VFD digitron, Taiwan, , works 3AA, needs to press cover (battery cartridge) to make contact.,Scott Reynolds.
  • 13.01.27.10 - Commodore SR5190R, sn005434, England, red LED, nicads, INOP using external 420B charger, Scott Reynolds.
  • 13.01.27.11 - Sinclair Scientific, RPN, England, red LED works 4AAA
  • 13.01.27.12 - Enterprex SR-55 Electronic Slide Rule, Green VFD, Tiawan, works 2AA
  • 13.01.27.13 - Commodore SR36, sn05329, England, red LED, nicads, works, Scott Reynolds.
  • 13.01.27.14 - Commodore GL-997R, sn14736, Japan, green VFD, nicads, works on charger, not tested on batteries, Scott Reynolds.
  • 13.01.27.15 - Corvus 310 Electronic Calculator, SN310-151267, red Led, works 4AA
  • 13.01.27.16 - Craig 4521, Japan, Electronic Calculator, Min: Sqr Root, green VFD, 2 AA works
  • 13.01.27.17 - Commodore SR4148R, sn121055, England, red LED, 3 AA nicads, works, Scott Reynolds
  • 13.01.27.18 - Elektronika MK36, USSR, blue vfd, Works partially, with 3 newH320 button cell NMHID batteries, Needs charging, but no charger available.
  • 13.01.27.19 - Teal 826 Memory, sn 408792, Japan,green vfd, works 2AA
  • 13.01.27.20 - Privilig SR53, sn015489, Germany, red LED, works 3AA, Scott Reynolds.
  • 13.01.27.21 - Privilig SR54NC RPN, sn41348, Germany, red LED, works 3AA, Scott Reynolds.
  • 13.01.27.22 - Silver-Reed 80 Electronic Slide Rule, Green VFD, Tiawan, works 1AA
  • 13.01.27.23 - Silver-Reed SR80 Electronic Slide Rule, Green VFD, German Instructions on back, works 2AA
  • 13.01.27.24 - Rockwell 31R Slide Rule Memory, sn 172800, Mexico/usa, works, replaced 2 AA nicads
  • 13.01.27.25 - Casio Memory-8A Electronic Calculator, sqr root, blue vfd, works 2AA bat.
  • 13.01.27.26 - Unisonic 1011 sn025147 Electronic Calculator, sqr root, green vfd, works 4C bat.
  • 13.01.27.27 - Unisonic 767 sn025147 Electronic Calculator, sqr root, green vfd, works 4C bat.
  • 13.02.05.01 - Prinztronic Electronic Calculator, sqr root, green vfd, works 4 AA bat.
  • 13.02.05.02 - Teal SR82 slide rule Memory, sn510891 Japan,green vfd, works 2AA
  2013.01.26 - SR_Menu - Removed "Avergi" from brands. I simply cannot find an image or record of it in the archives.
  2013.01.26 - ALRO - Added ALRO 200R Patent Slide Rule and Replaced ALRO-Print Spoorweglawaai 922130 (HSRC0093) technical disk, acquired from David Rance (Netherlands), made possible by a gift from Robert L. Allison of Ballard, Washington.
  
  • 2013.01.26.01 - ALRO 200R Patent Slide Rule
    
  • 2013.01.26.02 - ALRO-Print Spoorweglawaai 922130
    
  2013.01.26 - Netherlands - Added RiSta brand to gallery, based on input from David Rance, based on research by Gerard van Gelswijck (Netherlands)
  2013.01.26 - Germany/DDR - Moved RiSta entry to the Netherlands Gallery, based on input from David Rance, based on research by Gerard van Gelswijck (Netherlands)
  2013.01.11 - Germany/DDR - Added Reiss Rietz 60/0015 donated by Susanne Petersson, bio and family photo. Corrected scales on Reiss Rietz-Spezial 3201
  2013.01.11 - SR_Ephemera - Added advertisement from Mar 1936 Popular Mechanics on Civil Engineering Course, including slide rule (Gilson).
  2013.01.12 - Slidecharts - Added 9 specimens donated by Michael P. Maloney
  2013.01.12 - SR_Terms/Encyclopedia - Added reference to Schooley Engineering Co. Popular Mechanics Mar 1936
  2013.01.12 - SR_Library/USA - Added ISRM M252 Fullerton-Acu No 44 Instructions, Donated by Pamela Browne
  2013.01.12 - Friends - Added Susanne Petersson, Michael Maloney, and Carolyn (Randall) Diviancchi, and others.
  2013.01.12 - SR_Library/Japan - Added ISRM M251, Concise 28N Instruction, donated by Michael Maloney, Lacey, Washington
  2013.01.11 - SR_Ephemera - Added seven (7) related photos Found on a web search.
  2013.01.11 - Circular - Added (Replaced) Concise 28N SLR from Michael Maloney, Lacey, Washington added bio and photo
  2013.01.11 - KE - Added (Replaced) N4053-5 20 inch Polyphase sn 771644 (830192) donated by Carolyn (Randall) Diviacchi, Boston, MA.
  2013.01.11 - Sterling - Added(Replaced) Metric Converter (S305) donated by Susanne Petersson, Park Ridge, Illinois. included bio and family photo.
  2013.01.11 - Acumath - Added C.V. Ore S-M Slide Rule Ad from Popular Science, May 1956, page 261. Info by George Keane, Festus, Missouri.
  2013.01.11 - Lawrence - Added C.V. Ore S-M Slide Rule Ad from Popular Science, May 1956, page 261. Info by George Keane, Festus, Missouri.
  2013.01.11 - SR_Ephemera - Added C.V. Ore S-M Slide Rule Ad from Popular Science, May 1956, page 261. Found by George Keane
  2013.01.09 - Received donated personal slide rule and slide charts from Michael Maloney, Lacey, Washington
  
  • M251 - Concise 28N Instruction manual
    
  • 13.01.09.01 - SRL Promo Concise 28N circular slide rule and case
    
  • 13.01.09.02 - HP Reflectometer calculator & Mismatch Error Limits Calculator, 1967 Perrygraf Slide Chart
    
  • 13.01.09.03 - Anzac Amplifier Design Calculator & 3rd Order Intercept & 3rd Order Spurious-Free Dynamic Range, 1978 Perrygraf Slide Chart
    
  • 13.01.09.04 - HRB-Singer, Receiver Sensitivity and Noise Figure Slide-Rule, 1959 Perrygraf Slide Chart
    
  • 13.01.09.05 - AEL, Communication System Calculator, 1971 Perrygraf Slide Chart
    
  • 13.01.09.06 - ARGO Systems, ESM/ELINT System Calculator, 1980 Perrygraf Slide Chart
    
  • 13.01.09.07 - HP Measurement Error Calculator, 1968 Perrygraf Slide Chart
    
  • 13.01.09.08 - Collins Radio Company, Space Systems Calculator, 1966 Perrygraf Slide Chart
    
  • 13.01.09.09 - Telonic Industries, RF Filter Performance Chart Calculator, 1965 Perrygraf Slide Chart
    
  • 13.01.09.10 - Andrew Microwave Antenna System Computer & Coaxial Transmission Line Selector, 1986 Andrew Corp. Slide Chart
    
  2013.01.08 - Received donated personal slide rules from Susanne Petersson, Park Ridge, Illinois
  
  • 13.01.08.01 - Sterling Metric Converter
    
  • 13.01.08.02 - Reiss Rietz (Missing Cursor)
    
  2013.01.07 - Received donated slide rules Owned by Edwin Benjamin Randall, Jr. from Carolyn (Randall) and Valeriano Diviacchi.
  
  • 13.01.07.01 - K&E 4081-5 20 inch Log Log Duplex decitrig sn082488 - to duplicate
  • 13.01.07.02 - K&E N4053-5 20 inch Polyphase sn771644
    
  2013.01.01 - DemoSR - Added Eugene Dietzgen Co 1760 Series Demonstration Slide Rule. Photo provided By Darryl Willis
  2013.01.01.02 - Aristo Scholar 0903LL V2 dc3FL4 to gallery
  2013.00.00.xx - Missing Accenssion numbers for slide rules, in gallery or for rescue.
  • 13.00.00.01 - Pickett N1010-ES Trig Duplex c1964 Black Leatherette Sleeve
  • 13.00.00.02 - Tasco Pocket Arithmometer in plastic case with instructions
  • 13.00.00.03 - Addiator Universal Standard Model, green and silver In ISRM shadow box
  • 13.00.00.04 - K&E 4058W Beginner's Slide Rule, Black Leatherette sleeve w.text black metal cursor to duplicate white painted stock to duplicates
  • 13.00.00.05 - GE Space Propulsion Calculator
  • 13.00.00.06 - M.H.Mer & Co., Johnston Pumps, Comprehensive Conversion Calculator. 1974 to circular gallery.
  • 13.00.00.07 - K&E 4160 Chemist Slide Rule sn183656 - AGC - half of sleeve missing - duplicate
  • 13.00.00.08 - LFAI Soviet Military Dual Circular 1957
  • 13.00.00.09 - American Blueprint Military Slide Rule Version 1, was S189 - no sleeve - duplicate
  • 13.00.00.10 - Post Versalog 1460 sn237047 Green COS Leather sleeve no markings - - duplicate
  • 13.00.00.11 - Pickett Model 20 Basic Rnd Blk Logo V3 - to gallery.
  • 13.00.00.12 - Dietzgen 1767 National Maniphase c1966
  • 13.00.00.13 - Dietzgen 1767 National Maniphase c1966
  • 13.00.00.14 - Dietzgen 1767 National Maniphase c1966
  • 13.00.00.15 -
  • 13.00.00.16 - Aristo Scholar 0903 dc 3FE7. F.S.
    
  • 13.00.00.17 -
  • 13.00.00.18 - K&E 4071-3 Polyphase Duplex sn716469 Black box sleeve mising flap - duplicate
  • 13.00.00.19 - K&E 68-1892 K12 Prep glued to a desk base. Box Marked Mark Wolf
  • 13.00.00.20 - K&E N4058W Beginner's Slide Rule, c1954 Grey Leatherette sleeve w.text.
  • 13.00.00.22 - K&E 4058W Beginner's Slide Rule, Black Leatherette sleeve w.text.
  • 13.00.00.23 - K&E 4058W Beginner's Slide Rule, Black Leatherette sleeve w.text.
  • 13.00.00.24 - SankyoGeneric Slide rule (one sided) to gallery
    
  • 13.00.00.25 - Richardson Rule Works 1776 Missing Cursor
  • 13.00.00.27 - Pickett N1010-ES Trig RedTxt Square Braces Rnd Blk Logo to gallery
  • 13.00.00.28 - Pickett 1010 Trig Duplex, 1953 Magnesium, Black leatherette Sleeve
  • 13.00.00.33 - K&E N4058W Beginner's Slide Rule, c1954 Black Leatherette sleeve w.text.
  • 13.00.00.38 - Aristo Scholar 0903 dc 2LE2. F.S.
    
  • 13.00.00.45 - Dietzgen 1738 Style M Improved Decimal Trig Log Log 1954
  • 13.00.00.50 - Albert Nestler 23R System Rietz 1:25 scale
  • 13.00.00.51 - UTO 601 Hoffman GE Power Tubes promo. to gallery. Replace P018 (Lennox)
  • 13.00.00.52 - Sterling 587 pocket manheim to rescue
  • 13.00.00.53 - Empire Pedigree pocket (uses Sterling stock and cursor) red txt trig scales on back Replace P186.
  • 13.00.00.54 - Digi-Craft Metric Conversion, Digital Thermometer, Ruler, Paper Weight. To Gallery
  • 13.00.00.56 - Faber Castell 67/87 Rietz w metal framed cursor (Ricoh). dc 559 To adopt
  • 13.00.00.57 - Ve-Po-Ad 1925 Owned by Cecil Shadburn.Donated By Richard and Dorothy Cobb. in Adder Gallery
  • 13.00.00.58 - Ve-Po-Ad 1925 in shadow box
  • 13.00.00.59 - Addiator (Two-sided Original in large wide format design) in shadow box
  • 13.00.00.60 - Produx Addiator in shadow box
  • 13.00.00.61 - PIC German Calculator ( Addiator) in shadow box
  • 13.00.00.62 - Compact Calculator (Addiator) in shadow box
  • 13.00.00.63 - Addfeet Junior Calculator (Addiator) in shadow box
  • 13.00.00.64 - Lightning Adding Machine 7-digits Green (rotary Addiator) in shadow box
  • 13.00.00.65 - Addometer Model C (Feet & Inches) c1928. in shadow box
  • 13.00.00.66 - Beta Enterprises ABA-TEN Rule in MiscUSA gallery
  • 13.00.00.67 - Pickett 1025 Spring Design, Owned by J.B. Beckwith of Associated Spring.
  • 13.00.00.68 - Pickett 1025 Spring Design, Associated Spring. Owned by J.A. McGrail of Evergreen, CO. To adopt.
  • 13.00.00.69 - Pickett 1100 Spring Design, Associated Spring. Triangle Logo.
  • 13.00.00.70 - Pickett 1025 Spring Design, Associated Spring. Modern Logo, Curved braces
  • 13.00.00.71 - Associated Spring Circular Helical Spring Design Donated by Jack Rababeh, Senior Engineer at ASC
  • 13.00.00.72/M242 - Ratcliff's Spring Calculating Slide Rule. Grawford Spring works, Rochdale, England
  • 13.00.00.73 - Pickett 931-ES Capitol Radio Engineering Institute - (was S434) 1960-62 Curved braces, Round black logo Flat lens
  • 13.00.00.74 - Wallace Barnes ASC Spring Data Computer Slide Chart 1947
  • 13.00.00.75 - Wallace Barnes ASC Spring Data Computer Slide Chart 1952
  • 13.00.00.76 - Wallace Barnes ASC Spring Data Computer Slide Chart 1952 Missing Cursor to adopt
  • 13.00.00.77 - Gibson-Spring Data Computer William D. Gibson, Chicago, Ill. 1938
  • 13.00.00.78 - Albert Nestler No. 10 RR Track Scales, pre 1938.
  • 13.00.00.80 - Gilson Midget Binary Slide Rule .(in display shadow box)
  • 13.00.00.81 - Replica of V2 Rocket Ballistic Ranging Slide Rule Made by the Curator. in gallery.
  • 13.00.00.82 - Lawrence 8-B Used by Mike Konshak with NAR model rockets
  • 13.00.00.83 - Boxwood sector c1851-1870 in Rarities gallery
  • 13.00.00.84 - Stanley No 15 Engineers Joint Rule with Gunter's scale on Slide
  • 13.00.00.85 - Olson TL-472 Electrical dc N.S-3 (1965 Shizuoka Factory)
  • 13.00.00.86/M442 - Concise 300 with Calender, blue sleeve stamped No. 320
  • 13.00.00.87 - Ericsson 4.75" dia Proportion Calculator
  • 13.00.00.89 - Arthur Brown & Bro 7996A (Made by Roos)
  • 13.00.00.90 - Stanley No 15 Engineers Joint Rule with Gunter's scale on Slide, cleaned brass, stuck sl;ide, missing alignment pins. - duplicate
  • 13.00.00.91 - Dietzgen 1797M Gilson Midget 4 inch diameter.no sleve. Version 2 copy USA. - duplicate
  • 13.00.00.92 - K&E Short Base Trianulation Slide Rule U.S. Army - duplicate
  • 13.00.00.93 - K&E N4053-5 20" Polyphase Mannheim sn945977 NIC Modern K&E logo, 1955 black leather sleeve - duplicate
  • 13.00.00.94 - K&E N4053-3 10" Polyphase Mannheim Lot 961 NIC Side K scale hairline, 1955 black box sleeve - duplicate
  • 13.00.00.95 - K&E 68-1210 Log Log Duplex Decitrig (new 4081-3) inlaid edges sn991644 1955 - duplicate
  • 13.00.00.96 - K&E 4081-3 Log Log Duplex Decitrig sn774129 1948 Orange leather sleeve - duplicate
  2013

  ---

  2012.12.28 - Nordic - Changed name of Denmark/Sweden gallery to Nordic (DK/SE).
  2012.12.28 - Australia - Added higher resolution scans of Service Slide Rule model REED, with white paper from David Rance, Netherlands.
  2012.12.26 - Switzerland - Created this gallery which contains Kern, LOGA and CURTA.
  2012.12.26 - German - Created this gallery from MiscEuro, which contains 17 brands.
  2012.12.26 - MiscEuro - Pulled German/DDR, Swiss and CURTA manufacturers and created 2 new galleries, The Germany/DDR and Switzerland (Kern and LOGA) and Liechenstien (CURTA) Manufacturers Switzerland
  2012.12.24 - SR_Library_Europe - Added Calculimetre Charpentier Instructions
  2012.12.24 - SR_WhosWho - Added Jacobus Ahrend (1875-1956) founder of the J.Ahrend company in the Netherlands.
  2012.12.23 - ALRO - Created this exclusive gallery of the Dutch Company ALRO using 53 specimens in Herman's Slide Rule Catalog (HSRC) gallery, found on ISRM
  2012.12.23 - Netherlands - Created this gallery from MiscEuro and specimens in Herman's Slide Rule Catalog (HSRC) gallery
  2012.12.23 - MiscEuro - Pulled Dutch manufacturers and created 2 new galleries, The Netherlands and Dutch Manufacturer ALRO
  2012.12.22 - Italy - Added Marconti 15R, Goliardo, Salmoiraghi Projection Slide Rule, Faviani Calcolina, scans by Andrea Celli, Italy
  2012.12.22 - MiscWorld - Split into two new galleries, Orient (East Asia - China, Korea, India) and Americas (Mexico, Brazil, Argentina)
  2012.12.20 - SlideCharts - Added Derck's Trig Simple-Fyer Dial and Calculator Specialties Heating Calculator. Donated by Robert L. Allison, Ballard, Washington
  2012.12.17 - SRM_Home - Updated gallery links - 45 galleries now!
  2012.12.17 - SRM_Menu - Updated main gallery links. Removed 'Misc' from gallery names (in process)
  2012.12.17 - Denmark - Building new gallery with images from MiscEuro. DIWA and UTO slide rules are featured.
  2012.12.17 - MiscEuro - Moved Danish slide rules to new Nordic gallery
  2012.12.17 - France - Building new gallery with images from MiscEuro. Tavenier-Gravet and Marc (with UNIS marks) slide rules are featured.
  2012.12.17 - MiscEuro - Moved French slide rules to new France gallery
  2012.12.17 - MiscEuro - Added Tavenier-Gravet Model Depose 10-13, Gamma 25R, scans from Giovanni Breda Collection, Italy.
  2012.12.16 - SR_Menu - Added Altma, Antica, Azzola, Cellograf, La Filotechnic, Mercantoni, Mathematicus, Orions, Plastigraf, Salmoiraghi, and Teacher. all in Italy.htm
  2012.12.16 - Italy - Building new gallery with images from MiscEuro and scans from the Giovanni Breda Collection.
  2012.12.16 - MiscEuro - Moved Italian slide rules to new Italy gallery
  2012.12.16 - Aristo - Added model 80123 Martin Space Rule 1962, scan provided by Rod Lovette Collection
  2012.12.16 - Aerospace - Added Martin Space Rule 1962 Aristo 80123, scan provided by Rod Lovette Collection
  2012.12.16 - SR_WhosWho - Added Washington Sabatini (1923-1966) who invented the W. Sabatini Concrete Calculator.
  2012.12.16 - MiscEuro - Added C.A. Ferrero Concrete Calculator based on Washington Sabatini's designs. Included reference pictures of earlier versions
  2012.12.15 - Ephemera - Added photo from TV screen of Circular Slide Rule In The 2005 Movie "World's Fastest Indian", starring Anthony Hopkins.
  2012.12.15 - SR_Terms - Added UNIS - Union Nationale Inter Syndacale. A French organization monitoring the quality of French goods. Contributed by Andrea Celli. Italy.
  2012.12.11 - Hemmi - Added(replaced) Model 47, c1932 (Paul Ross Image) slide rule, donated by Robert vented the W. Sabatini Concrete Calculator.
  2012.12.16 - MiscEuro - Added C.A. Ferrero Concrete Calculator based on Washington Sabatini's designs. Included reference pictures of earlier versions
  2012.12.15 - Ephemera - Added photo from TV screen of Circular Slide Rule In The 2005 Movie "World's Fastest Indian", starring Anthony Hopkins.
  2012.12.15 - SR_Terms - Added UNIS - Union Nationale Inter Syndacale. A French organization monitoring the quality of French goods. Contributed by Andrea Celli. Italy.
  2012.12.11 - Hemmi - Added(replaced) Model 47, c1932 (Paul Ross Image) slide rule, donated by Robert L. Allison of Ballard, Washington.
  2012.12.11 - Nestler - Added(replaced) Model Nr. 0115 Techniker (HRSC gallery image) pocket slide rule, donated by Robert L. Allison of Ballard, Washington.
  2012.12.10 - SR_Terms - Added Tamaya & Company entry which sold re-branded Hemmi Slide Rule from 1913-1932
  2012.12.10 - Hemmi - Added note at top of page mentioning Tamaya & Company of Tokyo, Japan as another rebranded Hemmi slide rule company.
  2012.12.10 - SR_Home - All slide rule specimens, scans, photos and ephemera are now organized into one of 40 galleries;
  2012.12.10 - Unique - Created Manufacturer Unique gallery, moved from British Gallery.
  2012.12.10 - Blundell - Created Manufacturer Blundell Harling/BRL gallery, moved from British Gallery.
  2012.12.10 - Thornton - Created Manufacturer PIC/British Thornton gallery, moved from British Gallery.
  2012.12.10 - British - Deleted Manufacturers PIC/British Thornton, Blundell/BRL, and Unique from this gallery, moved to their own Gallery.
  2012.12.09 - MiscJapan - Added Manufacturer Jakar (Fuji) to this gallery, moved from British Gallery.
  2012.12.09 - British - Deleted Manufacturer Jakar (Fuji) from this gallery, moved to MiscJapan Gallery.
  2012.12.09 - Manuals - Added Service Slide Rule, Model REED Instructions, scan by David Rance's Collection at www.sliderules.nl
  2012.12.09 - Australia - Added Service Slide Rule, Model REED, from David Rance's Collection at www.sliderules.nl
  2012.12.08 - SR_WhosWho - Added Paul Jones (1896-1945), founder of Festus Mfg (1938) which later became Acu-Rule (1940)
  2012.12.07 - SR_WhosWho - Added George L. Lockhart, founder of Slide Rule & Scale Engineering Company, 1930-1950, and Paul Jones
  2012.12.07 - Manuals/MiscUSA - Added Slide Rule & Scale Company Brick & Tile Computing Slide Rule Instructions, Scan provided by David Rance, The Netherlands
  2012.12.07 - MiscUSA/SR&SECo - Added Slide Rule & Scale Company Brick & Tile Computing Slide Rule, Scan provided by David Rance, The Netherlands
  2012.12.07 - Dietzgen - Added Dietzgen 1737 "Sigma" Instructions to specimen.
  2012.12.03.49 - Pickett Model 902-T Simplex Trig. Cast braces and blocks.
  2012.12.03 - Ricoh - Added (Replaced) Sans & Strieffe No. 311 (S435) dcP.S-2 log log slide rule. Added logo to Sans & Streieffe section of gallery.
  2012.12.03 - Acumath - Added Fullerton-Acu Model 1240 Pocket slide rule, with bio, Donated by Pamela Lanier Wolfe Browne, Kernersville, North Carolina.
  2012.12.03 - Dietzgen - Added Eugene Dietzgen D&P Improved Slide Rule, with bio, Donated by Pamela Lanier Wolfe Browne, Kernersville, North Carolina.
  2012.12.03 - MiscEuro/DIWA - Added DIWA 851/4 pocket duplex. Donated by Ron Dies Architecture, Vancouver, BC, Canada.
  2012.12.03 - Hemmi/Hughes-Owens - Added Hughes-Owens 1771 dcJB (Feb 1959). Donated by Ron Dies Architecture, Vancouver, BC, Canada.
  2012.12.02 - Nestler - Added(Replaced) c1920 Mannheim (S403) 12.10.01.01
  2012.12.02 - KE_Standard - Added K&E 4090-3 sn502283 [rare]
  2012.12.02 - MiscJapan - Added Royal Executive No. 5091 donated by Ville Koskinen of the UK.
  2012.12.02 - Pickett - Added additional scans of PR-13 and PR Trig rules showing transparency, corrected description. Provided by Cassou Olivier, France
  2012.12.01 - Display - Installed an exhibit in the broomfield Public Library, consisting of slide rules, abac1 and electronic slide rule calculators. Runs through Jan 31, 2013.
  2012.11.22 - Received donated slide rules from the collection of Robert L. Allison of Ballard, Washington.
  
  • 12.11.22.01 Pickett Model N3-ES Power Log Exponential Log Log, with leather sleeve.
    
  • 12.11.22.02 Acu-Math No. 400 Mannheim with sleeve.
    
  • 12.11.22.04 Sun Hemmi's Bamboo Slide Rule Model 47 c1930, with sleeve. Has Quot. and Prod. symbols with decimal aids.
    
  • 12.11.22.03 Pickett Model 1010 copyright1948, artwork 271 & 74
    
  • 12.11.22.05 K&E Gold Tie Clasp
    
  • 12.11.22.06 Nestler Nr.0115 Techniker, pocket slide rule
    
  • 12.11.22.07 Concise No. 320 Circular Slide Rule
    
  • 12.11.22.08 Calculator Specialties Co. Slide Chart. Heating Calculator
    
  • 12.11.22.09 Derck's Guage Dial Co. SIMPLE-FYER DIAL, Trigonometry Simplified, Disk chart. Copyright 1943 James Derck
    
  2012.11.20 - Received donated slide rules from Ron Dies, an architect in Vancouver, BC, Canada.
  
  • 12.11.20.01 Hughes-Owens (Sun Hemmi) 1771 dcJB
    
  • 12.11.20.02 DIWA Darmstadt No. 851/4
    
  2012.10.22 - Received donated slide rules from Pamela Lanier Wolfe Browne, Kernersville, North Carolina. Note: Pamela is the widow of Harry Edson Browne (1933-2006). Harry Browne was an inspirational speaker who wrote 19 books that sold more than 2 million copies. In 1996 and 2000 he was the nominee of the Libertarian Party for President of the United States.
  
  • 12.10.22.01 Eugene Dietzgen D&P Improved Slide Rule, Patent June 28, 1898, railroad track style divisions. Owned by PLW Browne's Godmother's Husband: Major Paul C. Allred, Jr., with photo and bio.
    
  • 12.10.22.02 Fullerton-Acu Model 1240 Pocket slide rule, owned and used by Pamela L.W. Browne, with photo and bio.
    
  2012.10.07.01 - Acquired K&E 4090-3 sn502283, made possible through slide rule and financial donations
  2012.10.01.01 - Acquired Albert Nestler c1920 slide rule made possible through slide rule and financial donations
  2012.09.26 - MiscUSA - Added four C-Thru slide rules, Version 1 and 2 (both with cursors), proportional and Concrete calculator, donated by Huang Collection
  2012.09.25.02 - Acquired Sans & Streiffe (Ricoh) No.311, made possible through slide rule and financial donations
  2012.09.25.01 - Received donated Royal Executive No. 5091 from Ville Koskinen of the UK.
  2012.09.24 - Dietzgen - Added pocket slide rule (dated c1915). Scan by Cassou Olivier, France.
  2012.09.24 - Ricoh - Added Eco-Bra 1460 pocket slide rule. Scan by Cassou Olivier, France.
  2012.09.24 - Ricoh - Added Compass 403 pocket slide rule. Scan by Cassou Olivier, France.
  2012.09.24 - Pickett - Added Log-Log slide rule, based on the PR-12 projection rule. Scan by Cassou Olivier, France.
  2012.09.16 - Faber - Added (Replaced) Verlag Chemie Pocket Slide Rule ISRM 12.09.15.01 (SRC357871)
  2012.09.16 - Pickett - Added (Replaced) Microline 121C-T (S147) with Retail card version donated by Oughtred Society
  2012.09.16 - SR_WhosWho - Added André Charvoz, founder of Charvoz and partner Abel Gottheimer founder of Roos
  2012.09.16 - Dietzgen - Corrected maker of 1774-M from Reiss to Ecobra, as instructed by French collector Olivier
  2012.09.15 - Calculators - Added Melcor SC-635 and SC-645 (note ISRM had to re-invent the battery module and hard wire into the calculators)
  2012.09.12 - Received donation from Blane Rhoten of Maryland, now a Friend of the Museum
  2012.09.05 - Received donation from Raymond Lejuez of New Jersey, now a Friend of the Museum
  2012.09.04 - Calculators - Added some support text and pictures on slide rules vs calculator longivity, and rearranged html for appearance.
  2012.09.03 - Calculators - Added Compucorp 322G Scientist (1971) and TI Programmer (1977) donated by Huang Collection.
  2012.09.03 - Lawrence - Added (Replaced) 8-B (S028) with one from Mike Konshak's personal collection that he used at 14, included an article and picture on rocketry and slide rules
  2012.09.02 - Soviet, SR_Menu, SIC - Corrected broken links found by John Oakhill in Australia. Thanks for the Help!
  2012.09.01 - Pickett - Added Model 3 Deci Multiphase Log Log slide rule (2nd Version). Belonged to H. McFadden. Donated by Laurie Deiter. Minor reformatting at end of page.
  2012.09.01 - MiscUSA - Added Walter J. Kudlaty catagory and his Press Tonnage Calculator slide rule. Belonged to H. McFadden. Donated by Laurie Deiter
  2012.09.01 - SR_WhosWho - Added Walter J. Kudlaty, designer of the Press Tonnage Calculator slide rule
  2012.09.01 - Received donation of slide rules and electronic calculators from Tom and Laurie Deiter, Louisville, CO
  
  • 12.09.01.01 Pickett Model 3 Deci-Multiphase Log Log (c) 1947 Belonged to H. McFadden (father of Laurie Deiter)
    
  • 12.09.01.02 Walter J. Kudlaty Press Tonnage Calculator, (c)1949
    
  • 12.09.01.03 Texas Instruments TI-35 Plus Calculator dcRCI-5187(works w/ new bat)
    
  • 12.09.01.04 Sharp EL-506S Scientific Calculator sn16155578 (1978)(works w/ new bat - missing screws)
    
  2012.08.31 - Received donation from John Oakhill of Australia, now a Friend of the Museum
  2012.08.29.01 - K&E_Standard - Added(Replaced) 4080-3 sn838161 (4080-3 sn824568) belonging to Reed W. Campbell. Included US Naval Academy logo and 1945 class pin.
  2012.08.25.01 - Received donation of K&E 4080-3 sn838161 1942 Issued to Reed W. Campbell at the US Naval Academy. Donated by daughter Barbara Campbell of Livermore, CA
  2012.08.27 - Received additional lot of donations of electronic calculators belonging to the Huang Collection. TI calculators and PC100A printers, Compucorp 322G Scientist.
  
  • 12.08.27.01 Compucorp 322G Scientific
    
  • TI PC100A (3) ...
    
  • 12.08.27.07
    
  2012.08.24 - SRM_Home - Removed Scientific American article and Berkely Breathed cartoon links as these appear in the Ephemera page.
  2012.08.24 - Calculators - Added OMRON 8SR sales sheet as jpg and pdf.
  2012.08.23 - SR_Library_Catalogs - Added Sun Hemmi 1926 'Calculating Rule' Catalog
  2012.08.23 - Hemmi - Added Sun Hemmi 1926 'Calculating Rule' Catalog at bottom of page
  2012.08.22 - Abaci - Added Sharp Sorokaru (Soroban+Calculator_ Models EL-428 and EL-8048
  2012.08.22 - Calculators - Added Sharp Sorokaru (Soroban+Calculator_ Models EL-428 and EL-8048 in post 1980 section
  2012.08.21 - Calculators - Added HP-21, HP-25, HP-25C, HP-29C, HP-31E,HP-32E,HP-33C,HP-34C,HP-37E,HP-38C,HP-41C,HP-41CV. Donated by Huang Collection. Added Exhibit placards and manuals where applicable.
  2012.08.21 - Received donation from David O'Brien of Arizona, now a Friend of the Museum
  2012.08.21 - Calculators - Added HP-55, HP-80, TI-30-II, TI Bus Analyst II, HP-67, donated by Huang Collection. Added Exhibit placards and manuals
  2012.08.20 - SR_Library_Books - Added Scan of "The Slide Rule - Tutortext By Robert Saffolf and Ann Smalley - 1962" Ref M199. Scanned by Kent Berglund, PhD.Cary, IL. Corrected broken link on 3 thumbnails.
  2012.08.17 - SR_Ephemera - Corrected Joshua Routledge (1773-1829) birthdate. Added picture of HP-45 with K&E slide rule from HP-45 Handbook, Page 6.
  2012.08.17 - SR_WhosWho - Added Joshua Routledge (1773-1829) inventor of the Routledge Slide Rule 1805
  2012.08.16 - Received donation of TI calculators belonging to the Huang Collection. These will replace many TI models in the Calculator gallery
  
  • 12.08.16.01
    
  • ...
    
  • 12.08.16.37
    
  2012.08.15 - Received donation of HP calculators belonging to the Huang Collection These will replace many HP models in the Calculator gallery
  
  • 12.08.15.01
    
  • ...
    
  • HP-35, HP-80, HP-45, HP-55, HP-67
    
  • HP-21, HP-25, HP-25C, (most INOP)
    
  • HP-31E, HP32E, HP-33E, HP34C, HP-37E, HP-38E. HP-41C (most INOP)
    
  • LCD Calculator Models - HP-11C, HP-15C
    
  • HP-71B and HP-75C Portable Computers
    
  • ...
    
  • 12.08.15.45
    
  2012.08.15 - SR_Home - Added banner and link to pictures of exhibit at Louisville, CO public Library. Announced next exhibit at the Broomfield Public Library.
  2012.08.15 - SR_Displays - Added pictures of exhibit at Louisville, CO public Library. 2012.08.14 - Ephemera - Added pictures of Janis Lyn Joplin, famous rock singer, when she was a member of a slide rule club in 1959, Thomas Jefferson HS, Port Aurthur, TX.
  2012.08.14 - Received donation of 7 Abaci belonging to the Huang Collection
  2012.08.09 - - Received donation of 3 'Slide Rule' Calculators from Scott Reynolds, Hemut, CA. Vintage Calculators Inc.
  
  • 12.08.09.03 Nestler T52
  • 12.08.09.02 Omron 8SR
  • 12.08.09.01 Omron 88SR
  2012.08.06 - Received donation from Justin Moretti of Canada, now a Friend of the Museum
  2012.08.06 - Aerospace - Added Cox & Stevens B-24 Load Adjuster Slide Rule. Donated by Lyle Wells of Henderson, Nevada
  2012.08.06 - Pickett - Added N4-ES (1958-1959) Vector Type Log Log and 1010-T (1957) Trig with Cast Metal Braces. Donated by Lyle Wells of Henderson, Nevada
  2012.08.05 - Received Donation of Slide Rules and book from Lyle Wells, Henderson, NV. c/o Donna Silva, with bio and personal photo.
  
  • 12.08.05.01 - Cox & Stevens B-24 Load adjuster Slide Rule, for Tail Number 49085
    
  • 12.08.05.02 - Pickett N4-ES (1958-1962) Vector Log Log Slide Rule
    
  • 12.08.05.03 - Pickett 1010-T (1957) Trig Slide Rule with die cast braces and cursor blocks
    
  • 12.08.05.04 - Book, Slide Rule Simplified, by C.O. Harris, American Technical Society
    
  2012.08.01 - Display - Installed Exhibit at the Louisville Public Library. Theme: Electronic Slide Rule Calculators and the demise of the Slide Rule and Abaci Industry. 2012.07.18.01 - Sterling - added 651 Metric Convertor donated by Russ Anthony in memory of his Father Ward B. Anthony
  2012.07.18 - SR_Ephemera - added addometer adding machine Ad from modernmechanix, Dec1947
  2012.07.16.01 - British - Added Fisher Controls Valve Sizing Slide Rule to Blundell Harling catagory, ref BHL FC3540
  2012.07.15 - Abaci/Ephemera - Created new gallery - added 85 pictures of people using Abaci, Soroban and Schoty , vintage and modern past.
  2012.07.05 - SR_Loaner - Added pictures from Collège André-Grasset in Montreal, Canada. Professor Paul Guertin's students using slide rules provided by ISRM
  2012.07.02 - Sterling - Added(Replaced) 594 Decimal Trig Log Log (ISRM), Donated By the Huang Collection
  2012.07.02 - MiscJapan - Added Japanese_Mannheim_CJEdwards, Japanese_Mannheim_wRulers_ITT_Defense, Donated By the Huang Collection
  2012.07.02 - MiscEuro - Added Diwa 601-1 dc294 Components Inc, Diwa 601-1 dc012 Grundfoss Pumps,Donated By the Huang Collection
  2012.07.02 - Faber - Added(Replaced) 2/82 Duplex Falt Plate ends (S205), 62/82 Pocket (P030) ,Donated By the Huang Collection
  2012.07.02 - Pickett - Added(Replaced) N600-T, LogLog, 140-T Microline LogLog Version2, 140-ES Microline LogLog Version2, Model 61-C Concrete Calculator, Model 62 Promotional, Model N1010-T RndBlkLogo, N200-ES in Box (P148), N200-ES York in Box,Donated By the Huang Collection
  2012.07.02 - Hemmi - Ubdated background on Byoutou Slide rule from first hand experience of Dr. Di Chen
  2012.06.30 - K&E Standard - Added 4098 sn27319 Pocket, K&E 68-1100 Decilon sn221850, Donated By the Huang Collection, with bio pic
  2012.06.30 - Nestler - Added(Replaced) 0292 MultiMath Duplex dc170 (S207), Donated By the Huang Collection, with bio pic
  2012.06.30 - MiscEuro - Added Technostyl 41/R Italy, Donated By the Huang Collection, with bio pic
  2012.06.30 - Acu-Math Added Fullerton-Acu 600 Trig, Fulerton-Acu 400 Mannheim, Donated By the Huang Collection, with bio pic
  2012.06.29 - Hemmi - Added(Replaced) Hemmi 153 Electrical Engineer, Sep 1961 (S230) Donated By the Huang Collection, with bio pic
  2012.06.29 - Post - Added(Replaced) 1460 Versalog sn826144 Black COS (S078),1460_Versalog_dcRF_sn817456 Green COS (S079), Versalog II (w/A scale) noSN, dcTE (S080), Donated By the Huang Collection
  2012.06.29 - Pickett - Added(Replaced)Pickett 500 Ortho-Phase snE911050 from Peter Chmielowiec of Louisville, Colorado, with photo and bio.
  2012.06.29 - Received donation of magnesium Pickett 500 Ortho-Phase snE911050 from Peter Chmielowiec of Louisville, Colorado
  2012.06.28 - Dietzgen - Added(Replaced) 1738 Multilog Multiplex Style M and 1744 Polymath sn300543(S286 and S341) , Donated By the Huang Collection
  2012.06.28 - Dietzgen - Added(Replaced) 1734 Microglide sn056181 (S277) Donated By the Huang Collection, with bio pic
  2012.06.28 - SRLoaner/NorthwoodHS.htm - Added pictures from 2012 Northwood High School, Silver Springs. Maryland, Leor Baldinger's class.
  2012.06.28 - Aristo - Added(Replaced) 0968 Studio (S100 V2) dc64-115, Version 2 and 0903-T Scholar Charvoz; Donated By the Huang Collection, with bio pic
  2012.06.28 - MiscUSA - Added 3 Foxboro Valve Sizing Slide rules; Donated by Carlee Heit, the Ray Heit Collection and NatGasEdu.com
  2012.06.28 - Circular - Added Concise 320 with Calendar (1968-1981), Donated By the Huang Collection, with bio pic
  2012.06.27 - MiscUSA - Added(Replaced) Guedon, Camden, New Jersey, metal vest pocket slide rule 1943 (P118), donated by Scott Reynolds, Vintage Calculator inc.
  2012.06.26 - Pickett - Added(Replaced) N-531-ES CREI Donated By the Huang Collection (Replaced item from Andy Keller Donation)
  2012.06.25 - MiscJapan - Added(Replaced) Bristol Line No. 19-5 (P047), Donated By the Huang Collection, with bio pic
  2012.06.25 - British - Removed Misc British catagory, moved Bristol Line slide rule to MiscJapan. Changed SR_Menu link.
  2012.06.25 - Slide Rule Loaner - Received pictures of Northwood High School students in Silver Spring, MD using ISRM supplied slide rules
  2012.06.25 - MiscEuro - Added(Replaced) Diwa No.720 Polylog (S336), Donated By the Huang Collection, with bio pic
  2012.06.25 - Nestler - Added Albert Nestler A-G Mannheim c1920, english equivalents [etsy $20]
  2012.06.24 - Hemmi/Odelco - Added Hemmi 259-D Mechanical Engineer Donated By the Huang Collection, with bio pic
  2012.06.24 - Ricoh - Added(Replaced) Lutz 252 U.S. Government (S094) Donated By the Huang Collection, with bio pic
  2012.06.24 - Pickett - Added(Replaced) Microline 140 Red LogLog (S330), N600-ES LogLog Pocket, No.120 (S133), N1010-ES Trig (S178); Donated By the Huang Collection
  2012.06.24 - Received approx 60 slide rules belonging to the Huang Collection
  
  • 12.06.24.01 Faber-Castell 2/82 in plastic case [4] for gallery*
  • 12.06.24.02 Concise 320 Calendar (1960-1981) Conversions plastic sleeve[4] for gallery*
  • 12.06.24.03 Faber-Castell 62/82 in leather sleeve [4] for gallery*
  • 12.06.24.04 Hemmi/Odelco 259-D Mechanical Engineer [4] for gallery*
  • 12.06.24.05 Pickett 140-ES Red LogLog, leatherette sleeve [4] for gallery*
  • 12.06.24.06 Ricoh Lutz 252 U.S. Government Leather sleeve [4] for gallery*
  • 12.06.24.07 Pickett 120-ES w/sleeve V2 Italic Inverse Scales. [4] for gallery*
  • 12.06.24.08 Pickett N3-ES w/leather sleeve [4] fundraiser
  • 12.06.24.09 Hemmi 153 dc LI (1961) w/cardboard sleeve [4] for gallery *
  • 12.06.24.10 Pickett Model 61C concrete Calculator Leather sleeve [4] for gallery
  • 12.06.24.11 Pickett Model 62 Trig Westville Electric Co Ad Western Electric sleeve [4] for gallery
  • 12.06.24.12 Pickett N600-ES LogLog Leather sleeve [4] - traded to Phillip Rodley in New Zealand*
  • 12.06.24.13 Pickett N600-T LogLog Leather sleeve [4] for gallery*
  • 12.06.24.14 Pickett 140-T Microline LogLog, Version 2, leatherette sleeve [4] for gallery*
  • 12.06.24.15 Pickett 140-ES Microline LogLog, Version 2, leatherette sleeve [4] for gallery*
  • 12.06.24.16 Pickett 140-ES Microline LogLog, Version 2, leatherette sleeve [4] fundraiser
  • 12.06.24.17 Pickett 120, leatherette sleeve [4]* for gallery*
  • 12.06.24.18 Pickett N1010-ES Trig in Retail Box, Manual, leather sleeve [5] for gallery*
  • 12.06.24.19 Diwa Polylog No720 in Box, Manual, leather sleeve [5] for gallery*
  • 12.06.24.20 Aristo Studio 0968, dc64 115, partial plastic sleeve [3] for gallery*
  • 12.06.24.21 Post Versalog sn826144 dcHF (June 1957) Black COS w/leather sleeve [3] for gallery*
  • 12.06.24.22 Post Versalog sn817456 dcRF (June 1967) Green COS w/leather sleeve [4] for gallery*
  • 12.06.24.23 Post Versalog II (w/A scale) noSN, dcTE (May 1969) Green COS, w/leather sleeve [4] for gallery*
  • 12.06.24.24 Dietzgen 1734 Microglide sn056181 w/leather sleeve [4] for gallery*
  • 12.06.24.25 Dietzgen 1738 Multiphase Style-M, w/leather sleeve [4] for gallery*
  • 12.06.24.26 Post Versalog sn220355 dcLG (July 1961) Blue COS w/leather sleeve [3] fundraiser/loaner
  • 12.06.24.27 K&E 68-1100 Decilon sn221850 w/leather sleeve [4] for gallery*
  • 12.06.24.28 K&E 4098 Pocket sn27319 !FRAGILE! w/leather sleeve [4] for gallery*
  • 12.06.24.29 Dietzgen 1744 Polymath Multiplex DecTrigType, sn300543 w/insert w/leather sleeve [4] for gallery*
  • 12.06.24.30 Fuji 1200 w/sleeve [4] for gallery *
  • 12.06.24.31 Fullerton-Acu(math) Trig w/ retail box, manual & sleeve [4] for gallery*
  • 12.06.24.32 Technostyl 41/R Italy Pocket w/sleeve [4] for gallery*
  • 12.06.24.33 Bristol Line No. 19-5, Made in Japan [4] for gallery*
  • 12.06.24.34 Bristol Line No. 18-4, Made in Japan [4] for gallery*
  • 12.06.24.35 Diwa No.601-1 Early, dc294, Ad:Components, Inc, Arizona Division, Made in Denmark [4] for gallery*
  • 12.06.24.36 Diwa No.601-1 Later, , Ad:Grundfoss, Bjerringbro Pumpefabrik, Made in Denmark [4] for gallery*
  • 12.06.24.37 Japanese Mannheim with rulers on edge, ITT Defense Ad [4] for gallery*
  • 12.06.24.38 Japanese Basic Mannheim, CJ Edwards Ad [4] for gallery*
  • 12.06.24.39 Nestler Nr.0292 Multimath-Duplex dc170 [5] for gallery*
  • 12.06.24.40 Pickett N1010-ES Trig Round Black Logo, leather sleeve [4] fund raiser
  • 12.06.24.41 Pickett N500-ES HI LogLog leather sleeve [4] fund raiser
  • 12.06.24.42 Pickett N902-ES Simplex Trig cardboard sleeve [4] fund raiser
  • 12.06.24.43 Pickett N1010-ES Trig Round Black Logo, leather sleeve [4] fund raiser
  • 12.06.24.44 Pickett N500-ES HI LogLog leather sleeve [4] fund raiser
  • 12.06.24.45 Pickett N500-ES HI LogLog leather sleeve [4] fund raiser
  • 12.06.24.46 Pickett N500-ES HI LogLog leather sleeve [4] fund raiser
  • 12.06.24.47 Pickett N1010-T Trig Red and Black Text, Square Braces, Round Black Logo, leather sleeve , Hauserman written on stock [4] for gallery*
  • 12.06.24.48 Pickett N902-T Simplex Trig 1959, Square Braces, Round Black Logo, cardboard sleeve [4] fund raiser
  • 12.06.24.49 Pickett N902-T Simplex Trig 1960, Curved Braces, Round Black Logo, cardboard sleeve [4] for gallery*
  • 12.06.24.50 Pickett N-531-ES Capitol Radio Engineering Institute - 1960 [4] for gallery*
  • 12.06.24.51 Pickett N803-ES Synchro Log Log (stains on scale)[3] fund raiser
  • 12.06.24.52 Pickett N200-ES Pocket Trig, NIB, Curved Braces, Round Black Logo leather sleeve, Retail Box [4] for gallery*
  • 12.06.24.53 Pickett N200-ES Pocket Trig, NIB, Curved Braces, Modern Logo, leather sleeve, Retail Box, York Promotional[4] for gallery*
  • 12.06.24.54 Aristo Scholar 0903-T Charvoz, dcG5968, partial cardboard sleeve [3] for gallery*
  • 12.06.24.55 Pickett N1010-T Trig Red and Black Text, Square Braces, Round Black Logo, leather sleeve , Hayashi written on sleeve [4] fundraiser
  • 12.06.24.56 Sterling 594 Decimal Trig Log Log, brown leatherette sleeve [3] for gallery*
  • 12.06.24.57 Sterling 594 Decimal Trig Log Log, no sleeve, with manual [4] fundraiser.
  • 12.06.24.58 Fullerton-Acu 400 Mannheim [3] for gallery*
  • 12.06.24.59 C-Thru_Generic_SlideRule_Version1_DonatedByHuangCollection for gallery*
  • 12.06.24.60 C-Thru_Generic_SlideRule_Version2_AMECO_DonatedByHuangCollection for gallery*
  • 12.06.24.61 C-Thru_GersonCo_BituminousConcreteCalculator_SR_HuangCollection for gallery*
  • 12.06.24.62 C-Thru_ProportionalSlideRule_WarnerBros_DonatedByHuangCollection for gallery*
  • 12.06.24.63 Sterling 594 Decimal Trig Log Log, no sleeve, with manual [4] fundraiser.
  • 12.06.24.64 K&E N4083-3 LogLogDuplex Vector, sn618984 (1952) KERCS. restored 1-8-14 with Cursor from another SR. fundraiser.
  • 12.06.24.65 Acumath No.500 With formed Sheetmetal end braces.
  2012.06.23 - Received 2 Hemmi slide rules, Electro with Decimal Keeper and 257 Chemical Engineer, belonging to Jiro Higuchi and his father. Kamakura, Japan.
  2012.06.23 - Calculator - Added HP9100A (2012.06.23.01), HP-27 (2012.06.23.02) and Radio Shack EC-420 (2012.06.23.03)slide rule calculators.
  2012.06.23 - Post - Added(replaced) Pocket Dual 10"/5" slide rule (P088) [etsy] .
  2012.06.22 - Received donation from G. Larry Kehl now Friends of the Museum
  2012.06.20 - Calculator - Added scanned manual for 1974 Commodore SR-36 Electronic Slide Rule Calculator.
  2012.06.20 - Abuci - Added historical pictures and 2nd specimen to gallery, with historical trivia
  2012.06.19 - British - Added Wollaston Chemical Slide Rule
  2012.06.18.05 - Pickett - Added Model 1000 Ortho-Phase Duplex magnesium sn02B4935
  2012.06.18.02/01 - MiscUSA - Added Henschel No. 1096 Made by Nestler; and Gerber Variable Scale Model TP007100B.
  2012.06.18.03 - Hemmi - Added 153 Occupied Japan, owned by Rear Admiral Forrest A. Rhoads (1898-1965), Donated by Rod Vance, Australia
  2012.06.18.04 - Dietzgen - Added(replaced) Phillips 1740 (S115), owned by Radm Forrest A. Rhoads (1898-1965)
  2012.06.17 - Terms - Added PI to many decimal places. Did you know all slide rules, calculators or abaci images at ISRM are set at PI?
  2012.06.17 - Abuci - Added historical pictures and first specimem, donated by Joel Haertling of Boulder, Colorado
  2012.06.17 - SR_Ephemera - Added two new pictures, United Airline Mechanics and a modern Cartoon
  2012.06.16 - Received donation of a Hemmi 153 from Rod Vance, Australia. This belonged to Rear Admiral Forrest A. Rhoads
  2012.06.12 - Received donation from Riki Nakamoto of Hawaii, now Friends of the Museum
  2012.06.11 - Media - Mike Konshak, the ISRM curator was quoted for an article in the San Francisco Chronicle, "New Education Standards End Rote Learning"
  2012.06.10 - Received donation to cover purchase of slide rule owned by rear admiral Rhoads, by Rod Vance, of Australa.
  2012.06.09 - Abuci - Created new gallery for Abacus, Suan Pan, Shoty, and Sorobans
  2012.06.08 - Received donation of an HP 9100A sn816-0047 desk top 'slide rule' calculator. By Alexey Davies of Boulder, Colorado. Was a Bell Telephone Labs (BLT) asset.
  2012.06.08 - Aerospace - Added A4D Skyhawk Computer, owned by Astronaut Paul Weitz
  2012.06.07 - Received donation from Dr. Paul Tarantolo of Texas and Mark Johnson, now Friends of the Museum
  2012.06.03 - Dietzgen - Added 1745 USMC Issue - Magnifying/Frameless Cursor. Purchased at a Denver Antique Store in 2011
  2012.06.02.01 - Aristo and MiscEuro/Klawun- Added 0908 TriLog, Klawun Feinmessinstitut Slide Rule donated by Ted Hume, Texas (in 2009)
  2012.06.02 - Pickett - Added Collins Radio C-19-T Microwave Transmission Slide Rule donated by James Price, Tacoma, Washington, included short biography
  2012.06.02 - Received donation of Thacher Cylindrical Slide Rule. from Dick Rose, Ohio
  2012.06.02.01 - Received donation of Pickett C-19 Collins Radio Slide Rule with 4 inserts. from James Price, Washington
  2012.06.01 - Received donation from ISRG members: David Rance of the Netherlands, John Stevenson of Canada, Robert Witt of New York, Andrew Currie of New Zealand , now Friends of the Museum
  2012.05.31 - Received donation from ISRG members: Cyril Catt of Australia, Angel Carrasco Conejo of Spain, Gregory McClure of Colorado, Roi Gift of Washington, Rod Vance of Australia, Thomas Yorker of New York. now Friends of the Museum
  2012.05.31 - Display - The 'Slide Rule' Calculator exhibit was dismantled in the Boulder Public Library and put up for the next exhibit.
  2012.05.31 - Ephemera - Add slide rule watch ad, Modern Mechanix 1959, Cartoon by Scott Hilburn, and 3 photos of the Missouri Univ. Mascot Joe Miner
  2012.05.31 - Library/Pickett - Added Pickett Insert Part No 25-416, Basic Slide Rule Instructions
  2012.05.31 - Library/British - Added Helix Regal Series Instructions. Added Unique_Half-Hour_Instructions Donated by Richard Davis
  2012.05.30 - Library/Pickett - Added Pickett 101-C Dial-Rule instructions (1957). Donated by Ann Kilby, Kingston, Washington
  2012.05.30 - Received donation from ISRG members: Jack Segal, David Ogden, Bennie Tschoerner of Texas, Alvaro Gonzalez, Frank Robertson, John Ireton, Richard Rose of Ohio. Sean Sanderson of Vermont, Anthony Nevett of New Zealand, Michael Mjelde, Ian Lodge of UK, Hans Milton of Sweden, Jose Gabriel Fernandez of Spain, William Hill of Texas, Peter Fox of UK, Jeremy McCarthy of UK now Friends of the Museum
  2012.05.29 - Library/Misc_Euro - Added Aristo Models 868 and 968 Studio, 01068 Instructions (3rd Version). Contributed by Amin Aur, Norman, Oklahoma
  2012.05.29 - Received donations from Amin Aur of Oklahoma, and Miles Schumacher, Windsor Heights of Iowa, now Friends of the Museum
  2012.05.27 - SRM_Home and Fund Raiser - Added souvenir shop for t-shirts/mugs, etc with ISRM logo.
  2012.05.26 - SR_Terms/Encyclopedia - Added Slide Rule Tuning definition
  2012.05.26 - Demonstration Slide rules - Added pictures of "Dr. Dalai"'s demo slide rule collection hanging in his office.The best I've seen.
  2012.05.26 - Received donation from Michael Andersson of Sweden now Friends of the Museum
  2012.05.25 - Received donation from James Price of Washington now Friends of the Museum
  . 2012.05.24 - Received donation from Michael P. Hass of Virginia now Friends of the Museum
  2012.05.22 - Received donation from Kent Berglund, Giuseppe Bianchi of Italy. now Friends of the Museum
  2012.05.21 - Received donation from Giovanni Mai of Italy, Paul Anderson, Miniature Memento, Stephen Treadwell, and Marion Moon of california; now Friends of the Museum
  2012.05.23 - Received donation from Ingo Elsen of Germany, now a Friend of the Museum
  2012.05.15 - Library - disabled files access, but left thumbnails, to see if anyone would notice and donate $. I might disable the SR files as well. Lets see what happens. We need 200 Friends to donate $10 each to cover the immediate needs.
  2012.05.14 - Paypal - Added donation button to all galleries and donation request to home and friends, library pages,
  2012.05.14 - WhosWho - Added photo of John Pickett, son of founder Ross Pickett of P&E
  2012.05.13 - Friends of ISRM - begun to build the Friends list from the galleries and other records
  2012.05.13 - Received donation from Carl Wyant, now a Friend of the Museum
  2012.05.13 - Calculators - Too much to tell, updated the page with the latest acquisitions and research on slide rule calculators.
  2012.05.13 - Pickett - Corrects scale set on N4-T. Fixed radical symbol on IE9 using face="Arial" in font.
  2012.05.12 - Media - Did a taped radio interview (Jeff Emtman) on the exhibit at the Boulder Public Library and the history of slide rules
  2012.05.08 - Library/British - Added Technical Sales Emblem Series 1071 Commercial Instructions. All donated by Richard Davis., Las Vegas, Nevada
  2012.05.08 - MiscEuro - Added TEKNOR No.181 Gymnasium and DIWA 611 Electro Pocket. All donated by Richard Davis., Las Vegas, Nevada
  2012.05.08 - British - Added(Replaced) Technical Sales Emblem Series 1051, 1053, 1071, 1081, 1091. All donated by Richard Davis., Las Vegas, Nevada
  2012.05.07 - SR_Menu added Hellerman and Helix brands to list
  2012.05.07 - Library/British - Added Helix Regal Series Instructions. Modified scan originally from Tina Cordon
  2012.05.02 - British - Misc British Added Hellerman No. 51, and Helix Regal A102S. Both new catagories. Acquired out of England with Electronic Calculators
  
  • 12.05.02.01 - Hellerman No. 51
  • 12.05.02.02 - Helix Regal A102S
  2012.05.02 - British - Added Thornton AD060 (Archive ref) and Unique Mannhiem (OEM Lietz 2975). Donated by Richard Davis., Las Vegas, Nevada
  2012.05.02 - MiscEuro - Added Logarex 27203 Darmstadt Pocket and 27601-I Studio. Donated by Richard Davis, Las Vegas, NV.
  2012.05.02 - MiscUSA - Added Lietz 2975 (Unique Mannhiem OEM ). Donated by Richard Davis., Las Vegas, Nevada
  2012.05.02 - MiscUSA - Added Lietz 2971-P USA (made by Bruning) and Lietz 2975 (made by Unique). Donated by Richard Davis, Las Vegas, NV.
  2012.05.02 - MiscJapan - Added ALCO #578 Pocket slide rule in retail ($1.00) Package. Belonged to Ruth Moira Kane, Donated in her memory by daughter Ann Kilby, Kingston, Washington
  2012.05.02 - Lawrence - Repaired broken image links
  2012.05.06 - Post - Added(Replaced) 2 models of 1446-D Student (S502) Owned by Wallace E. Kane Donated by step-daughter Ann Kilby, Kingston, Washington
  2012.05.06 - K&E - Added 4081-5 20inch Duplex Log Log Decitrig Owned by Wallace E. Kane, and N4058W Beginner's SR Donated by step-daughter Ann Kilby, Kingston, Washington
  2012.05.06.01 - Ricoh - Added(Replaced) Lutz 252 U.S. Belonged to Ruth Moira Kane, Donated in her memory by daughter Ann Kilby, Kingston, Washington
  2012.05.06 - Circular - Added(Replaced) Circular Dial Rule 101-C (C15). Donated by Ann Kilby, Kingston, Washington
  2012.05.06 - Pickett - Added(Replaced) Circular Dial Rule 101-C (C15). Donated by Ann Kilby, Kingston, Washington
  2012.05.06.02 - Dietzgen - Added(Replaced) 1757 Primatrig (S112) slide rule. Donated by Scott Reynolds (Vintage Calculators inc.), Helmut, California.
  2012.05.06 - British - Added(Replaced) Jakar 523A LL Pocket (P237), Jakar 22 Pocket and Jakar 33 Duplex. Donated by Richard Davis., Las Vegas, Nevada
  2012.05.05 - Received gifts of slide rules from Richard Davis, Las Vegas, Nevada
  
  • 12.05.05.01 Jakar 523A LL Pocket
  • 12.05.05.02 Jakar 22 Pocket
  • 12.05.05.03 Jakar 33 Duplex
  • M254 Jakar Instructions for models 11,22,29,33,55,66,77,88,99
  • M255 Technical Sales Emblem Series Instructions
  2012.05.04.01 - Received donation of K&E K12-Prep 68-1892 slide rule. Donated by Scott Reynolds (Vintage Calculators inc.), Helmut, California.
  2012.05.04.02 - Received donation of Dietzgen 1757 Primatrig slide rule. Donated by Scott Reynolds (Vintage Calculators inc.), Helmut, California.
  2012.05.03 - MiscEuro - Added/(Replaced) Logarex 27403-X Darmstadt (S569) donated by Richard Davis, Las Vegas, Nevada
  2012.05.02 - Received Donation of 8 slide rules and manuals from Ann Kilby (hers and her parents Wallace and Ruth Kane), Kingston, Washington. A family of scientists.
  • 12.05.02.01 Lutz NO. 252, dc MS-4 U.S., belonged to Ann's Mother: Ruth Moira Kane (1921-2007). Used in graduate school, Career in Theoretical Physics
    
  • 12.05.02.05 ALCO #578 Basic Mannheim, belonged to Ann's Mother: Ruth Moira Kane (1921-2007). Used in graduate school, Career in Theoretical Physics
    
  • 12.05.02.02 K&E 4081-5 sn630198 with green leather case and manual, belonging to Ann's Step-Father: Wallace E. Kane. Used in graduate school and career in Theoretical Physics
    
  • 12.05.02.03 K&E 4058W with red Post case, belonging to Ann Kilby. Used in high school and early college (biology). career in Healing arts
    
  • 12.05.02.04 Pickett 101-C with case and manual, belonging to Ann Kilby. Used in high school and early college (biology). career in Healing arts
    
  • 12.05.02.06 Post 1446-D Student, belonging to Ann's Step-Father: Wallace E. Kane. Used in under-grad school. Career in Theoretical Physics
    
  • 12.05.02.07 Post 1446-D Student, belonging to Ann's Step-Father: Wallace E. Kane. Used in under-grad school. Career in Theoretical Physics
    
  • Manual - K&E No. 4081
    
  • Manual - K&E No. 68-2047, old 4187S
    
  • Manual - K&E Horse Sense
    
  • Manual - Lawrence
    
  • Manual - Pedigree
    
  • Manual - Pickett 101-C
    
  2012.05.01 - Display - The 'Slide Rule'Calculator exhibit was installed in the Boulder Public Library.
  2012.04.29.01 - Electronika MK33 Calculator, Donated by Scott Reynolds..others to list
  2012.04.28 - MiscEuro - Added note on Fedra LogLog about Skip Zogopoulos, Exeter, NH being a donor of these to the ISRM slide rule loaner program.
  2012.04.27.01 - Faber - Added(Replaced) 2/83N Novo Duplex (S122) donated by Rod Vance, Victoria, Australia
  2012.04.25 - MiscUSA - Added Honeywell Metric Converter, donated by Zdenka Novosad, retired Petroleum Engineer, Louisville, Colorado
  2012.04.25 - MiscEuro - Added Logarex 27602, donated by Zdenka Novosad, retired Petroleum Engineer, Louisville, Colorado
  2012.04.25 - Circular - added Concise/Sama & Etana CTCS-552 with American Oil logo, donated by Zdenka Novosad, retired Petroleum Engineer, Louisville, Colorado
  2012.04.25 - Received donation of slide rules fom Zdenka Novosad, retired Petroleum Engineer, Louisville, Colorado
  • 12.04.25.03 Honeywell Metric Converter, donated by Zdenka Novosad, retired Petroleum Engineer, Louisville, Colorado
    
  • 12.04.25.01 Logarex 27602, donated by Zdenka Novosad, retired Petroleum Engineer, Louisville, Colorado
    
  • 12.04.25.02 Concise/Sama & Etana CTCS-552 with American Oil logo, donated by Zdenka Novosad, retired Petroleum Engineer, Louisville, Colorado
    
  2012.04.23.01 - K&E 4080-3 Log Log Duplex Trig sn422987 c1947, w. leather sleeve.purchased from shopgoodwill.com. was in Attanasoff display - duplicate
  2012.04.23.02 - Hemmi Added 153 for Elec. Eng. donated by Jim Jeffery, Deleted 153 (S324) for Elec. Eng. and 251 (S034) for Mech. Eng. as these were duplicates.
  2012.04.22.01 - Pickett - Added Model 14 Military Ranging slide rule. c1962.
  2012.04.22 - ISRC - Added 2012 RST championship with picture of winners. Kraemer, Rudowski and Luetjens
  2012.04.19 - SR_Links - Added Marksmath.com (Mark Armbrust Collection, Boulder, Colorado)
  2012.04.07 - Ephemera - Added 1966 photo of Yokagawa-Hewlett-Packard 4260a Design Team and 5 ads for Popular Science 1942-1971
  2012.04.06 - Calculators - TOO MANY CHANGES TO LIST! - Getting ready for an exhibit at the Boulder Public Library in May
  2012.03.23 - Ephemera - Added 1966 photo of West Point graduate John T. Reed using a slide rule as a cadet
  2012.03.23 - SR_Terms/Encyclopedia - Updated USAF Academy entry with chronology of math instruments used by different classes ('59-'90) and to the USN Academy
  2012.03.22 - Library/MiscEuro - Added 989 Complex Slide Rule, 989 Komplex-Rechenplatte Instructions in German and in English, donated by Henry Benoit, Kingston, Ontario, Canada
  2012.03.21 - Lawrence - Added 10-B and Eng. Inst. 10-B, donated by Henry Benoit, Kingston, Ontario, Canada
  2012.03.21 - Lawrence - Added 10-B and Eng. Inst. 10-B, donated by Henry Benoit, Kingston, Ontario, Canada
  2012.03.21 - Aristo - Added 0970 and 870 multilog, donated by Henry Benoit, Kingston, Ontario, Canada
  2012.03.21 - Faber - Added 989 Complex Slide Rule, 989 Komplex-Rechenplatte, donated by Henry Benoit, Kingston, Ontario, Canada
  2012.03.21 - Received donation of five slide rules from Henry Benoit, Kingston, Ontario, Canada used in his career (with personal photo and bio).
  
  • 12.03.21.01 - Faber Castell 989 Complex Slide Rule, 989 Komplex-Rechenplatte
  • 12.03.21.02 - Aristo 870 multilog DateCode 6501 (Jan 1965)
  • 12.03.21.03 - Aristo 0970 multilog DateCode 631 (Jan 1963)
  • 12.03.21.04 - Lawrence 10-B
  • 12.03.21.05 - Engineering. Instruments 10-B
  2012.03.17 - Adders/Troncets - Added a series of factory photos of a visit to the Addiator factory in Berlin (bottom of page)
  2012.03.16.04 - Adders/Troncets - Added Midget (VePo-Ad variant) adding machines
  2012.03.16.03 - Adders/Troncets - Added a Magic Brain adding machines
  2012.03.16.02 - K&E - Added(Replaced) N4053-5 20 inch Mannhiem sn830192 (L01) 1933-1935
  2012.03.16.01 - K&E - Added 4080-5 20 inch Log Log Duplex Trig sn632018
  2012.03.16 - SR_Library_MiscUSA - Added Charles Bruning 68-540 (old 2401) istructions
  2012.03.16.03 - MiscUSA - Added Charles Bruning 68-540 (old 2401) in retail box, w/ link to instructions
  2012.03.13 - MiscWorld - Added Tianjin 6504 Special scale Instructions By Liu Qinglin (Beijing, China) to Tinajin 6504 specimen, Contributed by Steve Treadwell
  2012.03.13 - SR_Library_Soviet (China) - Added Tianjin Squirell 6504 Special scale Instructions, Contributed by Steve Treadwell
  2012.03.15.01 - Hemmi - Added Electro, pre 1927 early model with train track scales, a Japanese copy of AW Faber 387
  2012.03.15.02 - Post - Added (Replaced) 1445P 8in (S497)
  2012.03.13 - SR_Library_Japan - Added SIC (Scientific Instruments) model 1570 and 1580 Instructions. scans by Jodie Hobson.
  2012.03.13 - Pickett - Added Model 100 and Model 6 Instructions to relevant slide rules in gallery, scan donations by Steve Treadwell.
  2012.03.13 - SR_Library_Pickett - Added Model 100 Douglas Sky rule and Model 6 Quality Control and Statistal Instructions, scan donation Steve Treadwell.
  2012.03.08 - SRM_Home - Placed promotional paragraph about the new Slide Rule Calculator Gallery.
  2012.03.02 - Received Donations of 18 Slide Rules from Richard Davis, Las Vegas and 20 Picketts to support the slide
  rule loaner program from members of the Oughtred Society that attended the West Coast Meeting in LA, Febuary, 2012.
  
  • 12.03.02.02 - QTY 14 Pickett 140C-T in Retail hanging Card
    
  • 12.03.02.01 - QTY 6 Pickett 121C-T in Retail hanging Card
    
  • 12.03.02.19 Unique USRC, Lietz 2975, Donated (ref 102) by Richard Davis, Las Vegas
    
  • 12.03.02.18 British Thornton AD060 Standard, Donated (ref 113) by Richard Davis, Las Vegas
    
  • 12.03.02.06 Emblem Series Tutor No.1051, NIB, Donated (ref 121) by Richard Davis, Las Vegas
    
  • 12.03.02.07 Emblem Series Olympic LL No.1053, NIB, Donated (ref 122) by Richard Davis, Las Vegas
    
  • 12.03.02.09 Emblem Series Commercial No.1071, NIB, Donated (ref 123) by Richard Davis, Las Vegas
    
  • 12.03.02.08 Emblem Series Techlog No.1081, NIB, Donated (ref 124) by Richard Davis, Las Vegas
    
  • 12.03.02.10 Emblem Series Executive No.1091, NIB, Donated (ref 124) by Richard Davis, Las Vegas
    
  • 12.03.02.04 Logarex Teknor Gymnasium No.1081, NIB, w/case Donated (ref 104) by Richard Davis, Las Vegas
    
  • 12.03.02.03 Logarex Teknor Gymnasium No.1081, Used, Donated (ref 106) by Richard Davis, Las Vegas
    
  • 12.03.02.15 Logarex Darmstadt 27203 Pocket, Donated (ref 103) by Richard Davis, Las Vegas
    
  • 12.03.02.05 Logarex Darmstadt 27403-X, Donated (ref ?) by Richard Davis, Las Vegas
    
  • 12.03.02.11 Logarex Studio 27607-1, Donated (ref 107) by Richard Davis, Las Vegas
    
  • 12.03.02.12 Jakar No.523A, Pocket, Donated (ref 108) by Richard Davis, Las Vegas
    
  • 12.03.02.14 Jakar No.22 Darmstadt, Pocket, Donated (ref 109) by Richard Davis, Las Vegas
    
  • 12.03.02.13 Jakar No.33 Duplex Log/Log, Pocket, Donated (ref 110) by Richard Davis, Las Vegas
    
  • 12.03.02.16 Diwa No.611 Electro, Pocket, Donated (ref 112) by Richard Davis, Las Vegas
    
  • 12.03.02.17 The A. Lietz CO. 2971P, Pocket, Donated (ref 101) by Richard Davis, Las Vegas
    
  • Jakar Instructions for No. 11,22,29,33,55,66,77,88,99, Donated (ref 111) by Richard Davis, Las Vegas
    
  2012.03.02 - Received Donation of "The Slide Rule" by Robert Saffold and Ann Smalley (TutorText) from John Roe, Uxbridge, MA
  2012.03.02 - SRM_Intro - Updated logo, added collage of math instruments (slide rules and calculatorsthe curator used in his career.
  2012.03.02 - Faber - Added FC TR-1, TR-2 and TR-3 Electronic Slide Rule/Calculators Hybrid
  2012.03.02 - Calculators - Added a new gallery showing 32 Electronic Slide Rule Calculators (1972-1977)
  2012.02.29 - Military - Added 5 155mm Howitzer Cannon Graphical Firing Table Slide Rules - Vietnam Era
  2012.02.27 - PocketWatch - Added banner and hyper link to Art Simon's Slide Rule Wristwatch web pages
  2012.02.24.01 - Received donation of 100 new Fedra slide rules for school loaner program and
  10 Pickett N500/N300-ES sets to be sold in fund raiser from Skip Zogopoulos, Exeter, NH.
  2012.02.24 - MiscWorld - Repaired broken link to Tianjin Squirell 6502
  2012.02.23 - Aerospace - Added Gareth Peach's pictures and magazine articles about Tidbinbilla, Australia and Apollo 11
  2012.02.19 - Faber-Castell - Added(Replaced) 51/91 (S101) donated by Nancy Day for William M. Day. Included Bio and picture.
  2012.02.19 - K&E - Added(Replaced) 68-1617 sn750904 (S201) donated by Nancy Day for William Bruce Day. Included Bio and picture.
  2012.02.19 - MiscUSA - Added(Replaced) C-Thru No 27 Pocket Slide Rule (P205) and Stock Yield Slide Rule. donated by Nancy Day for William Bruce Day.
  2012.02.19 - Received donation of slide rule from Nancy Day, for William Bruce Day
  
  • 12.02.19.01 - C-Thru No 27 Pocket Slide Rule
  • 12.02.19.02 - Stock Yield Slide Rule
  • 12.02.19.03 - K&E 68-1617 sn750904
  • 12.02.19.04 - Faber-Castell 51/91
  2011.02.19 - SRM_Home - Added pictures on righthand date-line column of African-Americans using slide rules
  2011.02.19 - SRM_Home - Rearranged home page to show a compact list of galleries and Libraries
  2011.02.15 - SR_WhosWho - Added Edward A. Straker to the gallery.
  2012.02.15 - Aerospace - Added Gareth Peach's System Temperature slide rule used in NASA
  2012.02.15 - Aerospace - Added new gallery for Aviation and Space related sliderules.
  2012.02.15 - Pickett - Added Cleveland Electrical Institute ad from 1965 Popular Sciance mag to slide rule gallery
  2012.02.14 - Ephemera - Added 12 pictures. Of special interest are some from Texas A&M,Cushing Memorial Library Archives and Michigan State.
  2012.02.14 - SR_Home - Created a Facebook Account for ISRM and provided a 'Like' link.
  2012.02.13 - Rarities - Added Stanley #15 Two Fold Joint Carpenter's rule with Gunter's slide. C1890.
  2012.02.12 - Military - Changed title to include 'Space-Race' related slide rules.
  2012.02.12.01 - MiscUSA - Added(Replaced) Carles Bruning 2401 (P055) with Westinghouse Electric Promo on reverse.
  2012.02.12.02 - Post - Added(Replaced) 1444-P (P057) with Preferred Utilities Promo on reverse.
  2012.02.10 - Ephemera - Added pictures of scenes from the 2008 movie Peggy Sue Got Married showing a slide rule.
  2012.01.10.01 - Nestler - Added No. 40 with name engraved "Martin Vauple Bremen"
  2012.01.10.02 - Dietzgen - Added(Replaced) 1732 (S319) sn536054 Maniphase Multiplex Decmal Trig LogLog
  2012.01.09 - Lawrence - Added section of Lawrence OEM rebranded slide rules found in other ISRM Galleries
  2012.01.08 - MiscUSA - Added Lawrence 10-B OEM Charvos-Roos SR-31 and Lietz 2974L. Scan by David Rance, The Netherlnds.
  2012.01.07 - Lawrence - Added scans of 30 new models of slide rules made by Lawrence from the David Rance Collection
  2012.01.03 - Nestler - Added #35 System Peter. Scan by Hubert added to Hermann's Slide Rule Catalogue
  2012.01.03.01 - New Aquisition of Fuller Cylindrical Slide rule out of the UK
  2012.01.03 - Rarities - Added J. Rabone & Sons Two Fold Joint Carpenter's rule with Gunter's slide. C1890. Nathan Zeldes Collection
  2012.01.03 - SR_WhosWho - Added Henry Coggeshall, c1677. Inventor of the Coggeshall rule and Edwin Thacher (1839-1920) inventor of the Thacher cylindrical slide rule.
  2012.01.03 - Ephemera - Added picture of Russian crew on a new AN-72 aircraft using a slide rule.
  2012.01.01.01 - Rarities - Added Two Fold Joint rule with Gunter's slide. C1890..
  

  ---

  2011.12.30 - K&E_Standard - Added 4082-3 with F scale. Scan by BajaRon from sliderulecentral.com
  2011.12.30 - Manuals - Added M249 Aero Products Research CR-6 Computer Instructions - 32 pages PDF file.
  2011.12.30 - SR_Terms/Encyclopedia - Expanded Otis Carter Formby King entry and Added Geniac
  2011.12.30 - Circular - Added Aero Products Research CR-6 Computer, Donated by Carlee Heit, Houston, Texas.
  2011.12.29 - SR_WhosWho - Added Otis Carter Formby King, with his bio written by ancestor Susan Richards
  2011.12.29 - Manuals - Added Otis King's Patent Calculator Instructions - 8 pages PDF file
  2011.12.29 - British - Added Otis King Cylindrical Slide rule Early Model K (ebay) and Late Model K and L (HSRC).
  2011.12.29.02 - Acquired Otis King Cylindrical Slide rule Model L Scales:429 and 430. snZ2275 green cardboard box (missing top), with manual.
  2011.12.29.01 - British - Added/Replaced Otis King Cylindrical Slide rule Model K Scales:423 and 414. snV7554 Leather case
  2011.12.29 - Circular - Added Rocket Design Sliderule, Courtesy Of Paul Ceruzzi, National Air And Space Museum
  2011.12.26 - Military - Added AN-5837-1 Alititude Correction Computer. Donated by Carlee Heit, Ray Heit Collection.
  2011.12.26 - Military - Added Dalton Dead Reckoning Computer E6-B, Donated by James Weber Estate and Time Distance Computer (ebay image)(also in Circular SR gallery).
  2011.12.26 - Library/General - Added Dalton Dead Reckoning Computer E6-B, post WWII Instructions. Donated by Carlee Heit, Ray Heit Collection.
  2011.12.26 - Circular - Added Dalton Dead Reckoning Computer E6-B, post WWII. Donated by Carlee Heit, Ray Heit Collection and Time Distance Computer (ebay image).
  2011.12.23.01 - Pickett - Added 931-ES (c1959) Capitol Radio Enginneering Institute (square braces) Donated by Dan Marcotte, Rye, New hampshire.
  2011.12.23 - Ephemera - Added 9 historical photos/ads/Ephemera of people with slide rules.
  2011.12.21 - Donation - Pickett 931-ES Capitol Radio Enginneering Institute (square braces),
  K&E 4081 Slide Rule Manual and K&E Elementary Instructions Donated by Dan Marcotte, Rye, New hampshire.
  2011.12.18 - Ephemera - Added 25 historical photos of people with slide rules.
  2011.12.17 - SR_Menu - Added 'Gerber' manufacturer link to gallery.
  2011.12.17 - SR_WhosWho - Added Andreas Tabak, The Collection of Calculating Devices - TCoCD.
  2011.12.17 - MiscEuro - Added Klawun Rietz No100, No 100 Hanover, 125LL, and 31c. Picture from Andreas Tabak Collection.
  2011.12.17 - MiscEuro - Added Klawun-Meloir Rietz No100 Hanover.Picture from .
  2011.12.17 - SR_WhosWho - Added H.Joseph Gerber, inventor of the Variable Scale slide Rule.
  2011.12.16 - Emphemera - Added photo of Dr. Robert B. Abernethy using a slide rule (1963).
  2011.12.17.01 - Faber - Added 398 Electro with all-glass cursor
  2011.12.16.02 - Pickett - Added 540-T Pratt & Whitney Gas Turbine Slide Rule c1959.
  2011.12.16 - Dietzgen - Added Insert Form No. 1700-SRT/500B/PN25 with N1733 Polymath Multiplex slide rule.
  2011.12.16.01 - Dietzgen - Added(Replaced) N1733 (S401) Polymath Multiplex Decmal Trig Type Log Log.
  2011.12.16 - SR_WhosWho - Added Ovid W. Eshbach and H. Loren Thompson, co-authors of Dietzgen Instruction manuals.
  2011.12.15.01 - K&E_Specialty - Added N4096 M sn530063 20 inch Merchant's Rule
  2011.12.15.03 - Germany - Added Joe Klawun No1001/S Business Rule. Added 2 company logos to title area.
  2011.12.15.02 - Post - Added(Replaced) 1446 (S096) pre-WWII Sun Hemmi, Made in Japan.
  2011.12.14.01 - K&E_Standard - Added K&E N4053-3 sn 802716 with Magnifying Cusor U.S.Military Issue,expanded case for magnifyer.
  2011.12.14.02 - Rarities - Added Ivory Sector, c1825, Same markings as W&S Jones Sector.
  2011.12.12 - MiscBritish - Added Unique Study 300 slide rule courtesy of Ted Hume (Texas)
  2011.12.12.01 - Rarities - Added Dring & Fage Excise Officers Rule with dual slides, c 1868. Alphabetized webpage by Manufacturer.
  2011.12.11 - SR_WhosWho - Added William Hyde Jackson Wollaston - (1766-1828) United Kingdom.
  2011.12.11 - Emphemera - Added photo of Harry T. Gisborne using an early fire danger meter in 1937
  2011.12.10 - Meetings. Updated International meetings page to be more generic and more maintainable.
  2011.12.09.01 - Donation - Received 10 Unique Study 300 slide rules courtesy of Ted Hume (Texas) for use in support of the slide rule loaner program
  2011.12.08 - SR_Terms (Encyclopedia) - Added entry for Joe F. Klawun
  2011.12.03.01 - MiscUSA - Added A. Lietz Co. 2971-N Pocket slide rule made by Hemmi.
  2011.12.03 - Emphemera - Added UIL Slide Rule Medal won by Paul Tarantolo, Houston, Texas
  2011.12.02 - K&E Standard - Replaced 4092-3 sn256159 (S007) currently stored in Display Frame D3
  2011.12.02.01 - Dietzgen - Added(Replaced) 1738 (Ref Larry Kehl) Style-M Multiphase Improved Decimal Trig Type Log Log
  2011.12.02 Aristo - Added(Replaced) 903LL Aristo-Scholar dc3FX80 (A054) logo Stamped On Braces;901 Aristo-Junior dc1S67 (S203)logo Stamped On Braces
  2011.11.23.01 - K&E Standard - Added(Replaced) N9081-3 (S159) Doric Duplex Decitrig
  2011.11.22 - Aristo - Added box images from New In Box (NIB) models 868 and 870 Pocket slide rules
  2011.11.22 - MiscWorld - Added(Replaced) Tianjin Squirrel Model 6502 (P238)
  2011.11.22 - Post - Added(Replaced) 1447 (S452) SunHemmiJapan dcCB No Post logo, 1447 (S313) dcKI Post logo on stock
  2011.11.22 - Post - Added(Replaced) 1447 (S021) HemmiJapan dcBI logo on slide, 1446 (S020) Made In Occupied Japan, 1445 (S228)
  2011.11.22 - K&E Standard - Added N4053-3 Polyphase All glass cursor, plastic blocks. Donated by Martha Prince.
  2011.11.22 - K&E Standard - Added 4080-3 (S299) Log Log Duplex Trig (replaced Howard 'Red' Sanford entry which was given to CHM).
  2011.11.22.01 - K&E Standard - Added N4080-3 S/N 470704 (S008)
  2011.11.22.02 - Pickett - Added(Replaced) Models N-500-ES (S185) Wide Cursor Radiused braces Modern Logo
  2011.11.22.03 - Pickett - Added(Replaced) Model N500-ES Wide Cursor Radiused braces Round Black Logo
  2011.11.22.04 - K&E Standard - Added 68-1318 Log Log Duplex Trig c1962,
  2011.11.22.05 - K&E Standard - Added(Replaced) 4181-3 (S481) Plastic stock,
  2011.11.22.06 - K&E Standard - Added(Replaced) 4081-3 c1954 with ST scale
  2011.11.21.07 - Pickett - Added Model N1010-ES with extra DI scale on back. Square braces round black logo
  2011.11.21.06 - Pickett - Added Models N901-ES Narrow cursor Square braces round black logo
  2011.11.21.05 - Pickett - Added N901-ES Wide Cursor Radiused braces round black logo
  2011.11.21.04 - Pickett - Added(Replaced) Models N901-T (S181) Square braces round black logo
  2011.11.21.03 - Pickett - Added 1010 Metal Bar Cursor Rounded Braces Triangle Logo
  2011.11.21.02 - Pickett - Added Model N1010-ES (only one DI scale) Square braces round black logo
  2011.11.21.01 - Pickett - Added Pickett N902-ES CI scale added, Radius Braces, Black Round Logo. For adoption, Replaced by 14.09.17.02
  2011.11.20 - Pickett - Added(Replaced) Model 200 c1949 w/ Alhambra, Ca address, Model 80 (S144), 1010-T (S177), and 1010-ES Square braces round blk logo.
  2011.11.20 - Sterling - Added(Replaced) model 584 White (S149), 589 Senior Red Text Slide (S150). Re-ordered listings by model number. Donated by David Sweetman
  2011.11.20 - MiscJapan - Added 2 Unknown Makers: Pocket Mannhiem with Linear scales on both edges and a Pocket Mannhiem , Fawick Airflex promo SR. Circa 1965. Donated by David Hecht
  2011.11.20 - Pickett - Added(Replaced) Model 300 c1949 (P237)(P216)(P092). Provided detail of stock machining c1949 and c1962. Donated by David Hecht
  2011.11.20 - Pickett - Added(Replaced) 200 RCA metal cursor bars, 200 (P095) Nat'l Carbon Co. Model 1006 c1949 (P203). Donated by David Hecht
  2011.11.19 - K&E - Added(Replaced) 4181-1 (P084) sn003925 A1B2 artwork Blk Scales Pocket Rule. Donated by David Hecht
  2011.11.19 - Acumath - Added(Replaced) Model 1200 (P037) pocket w/ white ends
  2011.11.18 - Relay/Ricoh - Added Lafayette F-686 Vector Log, and 99-7055 Vector Log. Rod Lovette Collection
  2011.11.18 - Faber-Castell - Added(Replaced) 67/87 Rietz (P034), 67/39 Rietz 5in, 67/39 Rietz 14mm, Donated by David Hecht
  2011.11.18.02 - Pickett - Added(Replaced) Model 160-T Made In Mexico w/Retail Box (P080),
  2011.11.18.03 - Pickett - Added(Replaced) Model 160-CT w/RetailCard
  2011.11.18.04 - Pickett - Added(Replaced) Model 160-ES w/Retail Box (P046).
  2011.11.18 - Pickett - Added(Replaced) Model 20 (P240), . Donated by David Hecht
  2011.11.18.01 - MiscEurope - Added(Replaced) Diwa model 301 Rietz (S244)
  2011.11.17.03 - Dietzgen - Add model N1725 Vector Type Log Log sn 013933
  2011.11.17.04 - Added Acu-math 400 Student Mannhiem, thin cursor, grooved stock.
  2011.11.17 - Acumath - Added(Replaced) models 400 wide stock (S140), 400 Oval Logo (S141) (Fullerton-Acu 400 (S142), 400B Oval Logo(S051)
  2011.11.17.02 - Acumath - Added(Replaced) model 400B Oval Logo(S051)
  2011.11.17.07 - Acumath - Added Models 130
  2011.11.17.06 - Acumath - Added Models 150 Oval Logo,
  2011.11.17.05 - Acumath - Added Models 500 metal braces, w/o logo,
  2011.11.17.01 - Nestler - Added Model No. 21 Darmstadt. Has cracked glass
  2011.11.17 - SR_Library/Europe - Added 801 Charvoz Roos (M246) and Nr. 89 Rietz (M247) Instructions. Donated by David Hecht
  2011.11.17 - Aristo - Added (Replaced): 801 Charvoz Roos and model 89 Rietz Pocket Rule (P066). Donated by David Hecht
  2011.11.17 - Post - Added Model 1461 Versalog II 1969 pocket and 1462H Postrig, Donated by David Hecht
  2011.11.17.08 - Scientific Instruments - Added (Replaced): SIC 5050 variant, Donated by David Hecht
  2011.11.17 - Relay/Ricoh - Added (Replaced): Lafayette 99-70302, Relay 602, Compass 505 (P219), Micronta 505 (P161) Donated by David Hecht
  2011.11.13 - Aristo - Added 801 Charvoz Roos (with Instructions) and replaced P066 model 89 Rietz Pocket Rule. Donated by David Hecht
  2011.11.13 - SR_Library/MiscEurope - Added 801 Charvoz Roos (with Instructions) Donated by David Hecht
  2011.11.13 - Aristo - Added 801 Charvoz Roos (with Instructions) and replaced P066 model 89 Rietz Pocket Rule. Donated by David Hecht
  2011.11.13 - Acumath - Replaced P037 Model 1200 (pocket) (given to CHM by ISRM)
  2011.11.13 - Pickett - Replaced P08 Model 160-T (Made in Mexico) and P046 Model 160-ES (both given to CHM by ISRM)
  2011.11.13.02 - Pickett - Added(Replaced) Model 61 Grey Braces V2 (P090)
  2011.11.13.01 - Pickett - Added(Replaced) Model 61 Black Braces V1 (P206)
  2011.11.13 - Relay/Ricoh - Added(Replaced) Compass Model 1018 (P119), Made in USA by Bruning, Donated by David Hecht
  2011.11.12 - Circular - Sama & Etani/Concise 600P Overhead Projector Model Donated by Carlee Heit, Houston, Texas. Ray Heit Collection.
  2011.11.12 - Pickett - Added(Replaced) N200-T Pocket Rule (P191) Sola Basic Ind. Donated by Carlee Heit, Houston, Texas. Ray Heit Collection.
  2011.11.12- K&E - Added(Replaced) 4181-1 C2D1 artwork Pocket Rule (P102) Donated by Carlee Heit, Houston, Texas. Ray Heit Collection.
  2011.11.12 - Hemmi - Added Foxboro Flow and Valve Rule. Donated by Carlee Heit, Houston, Texas. Ray Heit Collection.
  2011.11.11 - Sterling - Added(Replaced) two model 685's of new variations - Donated by David Sweetman and Model 587 (P019).
  
  • 11.11.11.01 - Sterling 585 Deluxe (Black Text slide - open back)
  • 11.11.11.02 - Sterling 587 - Promotional (ESNA) adoptr
  • 11.11.11.03 - Sterling 694 Decimal Trig MultiLog
  • 11.11.11.04 - Sterling 589 10" Senior red txt slide
  2011.11.11 - Donation - Received a large quantity of slide charts and and slide disks from Carlee Heit, Houston, Texas. Ray Heit Collection
  
  • 3 volumes of slide charts mounted in plastic 3-ring sheets
  • 11.11.11.04 Pickett N200-T
  • 11.11.11.03 - K&E 4181-1
  • 11.11.11.01 - Foxboro Flow And Valve Rule (Hemmi)
  • 11.11.11.05 - Foxboro Flow And Valve Pocket Rule (Made in USA)
  • 11.11.11.02 - Sama & Etani (Concise) 600P Overhead projector Model
  • 11.11.11.06 - AN-5837-1 Alititude Correction Computer - c1943 (circular)
  • 11.11.11.07 - Weems Dalton Dead Reckoning Computer,Type E6B Commercial Version Post WWII
  • 11.11.11.08/M249 Aero Products Research CR-6 (Aviation) Computer with Instructions
  • 11.11.11.09 - Concise EE-112 Conversion Tables with Reactance Nomograph Promo Brown ^ Root (duplicate)
  • 11.11.11.10
  • 11.11.11.11
  • 11.11.11.12
  - See more at: http://www.legacy.com/obituaries/houstonchronicle/obituary.aspx?n=raymond-anthony-heit&pid=955353#fbLoggedOut 2011.11.11 - SR_Menu - Added Nobema to Manufacturer's list
  2011.11.11 - British - Added Nobema Model No 4 Pocket Slide Rule
  2011.11.11.05 - K&E Standard - Added 4092-3 (1915-1921 with 1936 Cursor) with pat April 1, '24 markings.
  2011.11.11 - Pickett - Added 125 (Narrow Stock) and 140 (Narrow stock)
  2011.11.10.02 - K&E Specialty - Replaced S264 Model 4095-3 Merchant's Slide Rule (that was given to CHM by ISRM)
  2011.11.10.03 - Relay/Ricoh - Added Relay 252
  2011.11.10 - Pickett - Added 120-T w/Retail Box end scan. Replaced S301 (that was given to CHM by ISRM)
  2011.11.10.01 - Sterling - Added Sterling (685) red text slide - solid back
  2011.11.08 - Sterling - Added(Replaced) 594 variant, model 594 (S155) (that was given to CHM by ISRM) donation by David Sweetman
  2011.11.08 - Dietzgen - replaced model 1767 (S111) (that was given to CHM by ISRM) donation by David Sweetman
  2011.11.07.01 - K&E - Added 4092-3 S/N 515790 (1937) with new improved cursor.
  2011.11.07 - K&E Standard - Added 68-1892 K-12
  2011.11.07 - Emphemera - Added Ole Jorgensen Sliderule Scale Pencil Cup and Photo of Slide Rule and Transistor (found on Ebay)
  2011.11.07 - SR_Library/Japan - Added Hemmi P452 Instructions. Scan donated by John Oakhill (Australia)
  2011.11.07 - SR_Library/K&E - Added inserts from Duplex decitrig set. 'Horse Sense' by Don Herold and 'Care of Duplex SR'
  2011.11.06 - K&E - Added catalog pages (courtesy of McCoy's K&E Catalogs) on 1936 Replacement cursor on 4053-3 specimen
  2011.11.06 - K&E - Replaced several 4081-3 and 4092-3 (that were given to CHM by ISRM) with physical specimens donated by Martha Prince
  2011.11.06 - K&E - Replaced several 4053-3 in gallery (that were given to CHM by ISRM) with physical specimens donated by Martha Prince
  2011.11.06.01 - Received 4081-3 sn156280 with SRT scale 1955, donated by Martha Prince. Duplicate of sn2266 10.03.01.01 will be for adoption.
  2011.11.06.02 - Acumath - Added 1240 Black braces no logo, Pocket slide rule in Retail Box
  2011.11.06 - Pickett - Added 120-ES Retail Box end scan
  2011.11.06 - Emphemera - Added three Lawrence SR related items from David Rance (UK)
  2011.11.06 - K&E - Replaced 4054 in gallery (that were given to CHM by ISRM) with physical specimen.
  2011.11.05.02 - Lawrence - Added Lawrence Engineering Services 10-B with Magnifying Cursor
  2011.11.05.01 - K&E - Added 4088-3 no S/n, no B scale, 1915-1921 with 1936 Improved Cursor, Previous Owner: Sheldon Hart
  2011.11.05 - People w/SR's - Added five new pictures, 2 from movies and 3 from Nasa Ames.
  2011.11.04.01 - K&E - Added K&E 4054 S/N 291745 c1947 (replaced by 22.05.22.07) find and put in duplicates
  2011.11.03 - MiscBritish - Added A.G. Thornton V.P.15, scans by John Sykes (UK)
  2011.11.02 - Aristo - Added 0968 Studio, Version 2B, scans and photo by John Sykes (UK)
  2011.11.02 - MiscBritish - Added Blundell-Luton P10 with Photo of Brailsford Sykes and Unique five-ten, scans by John Sykes (UK)
  2011.11.02 - Home/Ephemera - added MIT Slide Rule Cake for OS 20th Anniversery.
  2011.11.02 - Faber - Added Verlag Chemie Chemistry Slide Rule. Included link to instructions at Ron Maley's site (UK).
  2011.10.30 - K&E - replaced scan of S045 4058W (CHM) w/ 4058W donated by David Hecht.
  2011.10.30 - Ricoh/Micronta - Mirrored Micronta (Nestler) 14/52 to this gallery as this has the majority of known Microntas
  2011.10.30.02 - Post - Added Post 1452W Universal - date code LA (Jan 1961)
  2011.10.30.01 - K&E - Added 4088-3 SN 406555, 1933-34 All glass cursor, flanged blocks
  2011.10.30 - K&E - Added 4053-3 SN 917, 1915 All glass cursor, metal blocks, Donated by Martha H. Prince (replacement)
  2011.10.29 - Links - Added Tina's Page Tina Cordon Collection
  2011.10.29 - Who's Who - Added Tina Cordon, a Geophysical Logging Engineer with a well documented collection.
  2011.10.28 - Dietzgen - Acquired 1745 U.S.M.C with Magnifying cursor,
  2011.10.28 - K&E - Added new acquisition of 20" K&E 4078 dated 1900-1903 (W. Cox Patent 1891) with brass indicator (chisel cursor) slide rule
  2011.10.26 - Faber - Added 2/82, donated by Shiela Russek, Toronto, Canada, In memory of Roman Russek.
  2011.10.26 - Aristo - Added D&P System Rietz and 867U, donated by Shiela Russek, Toronto, Canada, In memory of Roman Russek.
  2011.10.26 - Received donation of slide rules belonging to Roman Russek. Donated by Shiela Russek, Toronto, Canada
  
  • 11.10.26.01 - Aristo 867U Darmstadt - dc 2LA06 (1970)
  • 11.10.26.02 - Dennert & Pape System Rietz - c1921-1937
  • 11.10.26.03 - Faber Castell 2/82
  • 11.10.26.04 - Unique Electrical
  2011.10.26 - MiscBritish - Added Unique Electical donated by Shiela Russek, Toronto, Canada, In memory of Roman Russek.
  2011.10.25 - MiscEuro - Added two CURTA Model II images from The CURTA Page
  2011.10.25 - MiscEuro - Added CURTA calculator catagory with the contribution of Ward Anthony's CURTA.
  2011.10.25 - Who'sWho - Added Curt Herzstark (1902-1988), the inventor of the CURTA calculator.
  2011.10.25 - Ephemera - Added Tie Clasp Donated by Russell Anthony and 2011 Auburn University Decal donated by Amin Aur
  2011.10.25 - Donation from Russ Anthony of specimens belonging to his father Ward Anthony
  
  • 11.10.25.01 - Curta Calculator
  • 11.10.25.02 - Picket Model 1006
  • 11.10.25.03 - Slide Rule Tie Clasp
  • 12.07.18.01 - Sterling 651 Metric Convertor
  • 11.10.25.04 - Post Versalog 1460 black cos NoSn - Duplicate
  2011.10.23 - SR Library - Pickett - Added Model 23 Real Estate Slide Rule Instructions. Scan donated by Ron Kuc.
  2011.10.23 - Pickett - Added Model 23 Real Estate Slide Rule and Instructions. Donated by Ron Kuc.
  2011.10.23 - SlideCharts - Added Chord Board Slide Rule designed by Martin H. Samuel and donated to ISRM.
  2011.09.14 - Who'sWho - Added Tom Martin (UK) and Dr. Sam Friedman (USA). Expanded Rudowski, Barnes, Otnes, van Riet and Wyman bios.
  2011.08.29 - Received Donation of two Pickett 120ES for school loaner program by Alan D. Barbour, Fresno, CA
  
  • Pickett 120-Es w/ sleeve, retail pkg and manual - Replace S145 to ISRM
  • Pickett 120-ES w/ sleeve to SRLP
  2011.08.28 - Post - added 2 slide rules donated by Enn Veskimets of Lutherville, Maryland
  
  • 11.08.28.01 - Versalog 1460 No S/N, Date code DC - September 1952
  • 11.08.28.02 - Versalog 1461 Date code HK - November 1957
  2011.08.23 - Pickett - Replaced Model N3-ES Power Log Exponential Slide Rule with Donation by John L. Crawley, III, Newport News, Virginia
  2011.08.28.01 - MiscUSA - Added Charles Bruning 2460 Student Slide Rule
  2011.08.17 - Rarities - Added Aston & Mander 1915 Artillery rule, Clay Castleberry Collection
  2011.08.16.01 - Sterling - Added owner background to Sterling pocket model 587 Donated by Ron Pearce, of Littleton, Colorado belonging to his father, Finley Carlyle Pearce (1915-1998)
  2011.07.21 - SR Dates - Added Fowler Timeline
  2011.07.21 - Ephemera - Added 1930 photo of German Merchants using Nestler Cylindrical Slide Rule; and Red Pencil Cup
  2011.07.21 - Demonstration SR - Added Faber Castell 315/83N Novo Duplex Demonstration SR (Located At Powerhouse Museum).
  2011.07.14 - Pocket Watch - Added FC Calcuigraphe, HC Calculigraphe, Meyrat & Perdeizet, Mechanical Engineer, KL-1, scans from Clay Castleberry
  2011.07.07 - Who'sWho - Added Gottfried Wilhelm von Leibnitz (1646-1716) and John W. Nystrom (1825-1885)
  2011.06.26 - Military - Repaired umlates to be more compatible to most browsers. Let me know if you see a problem.
  2011.06.25 - Glossary - Expanded Jiro Hemmi data, added Hisashi Okura and Maso Bamboo entries.
  2011.06.25 - SR Dates - Corrections and slight additions to Hemmi timeline.
  2011.06.25 - Who'sWho - Added biography to Jiro Hemmi and added Hisashi Okura, (need photo) and Takeshi Okura to gallery.
  2011.06.23 - MiscUSA - Added Arthur Brown & Bro's.Slide Rule.
  2011.06.23 - Australia - Added C.O. Browne Long scale circular slide rule, photo by John Wolff
  2011.06.23 - Addiator/Troncets - Added/corrected gallery description and historical background.
  2011.06.23 - Menu - Renamed Mech Adders Gallery to Addiators/Troncets.
  2011.06.22 - SlideCharts - Added links to current manufacturers of slide charts and wheel charts.
  2011.06.21 - Menu - Added Australian Griffin, SCA, Ben Jordan, and Yabsley
  2011.06.21 - SlideCharts - Added Circular slide rule from Slide Charts of Australia (SCA), Cyril Catt
  2011.06.21 - Circular - Added two slide rule scans provided by Cyril Catt, Australia
  2011.06.21 - Auatralia - Added seven (7) slide rule scans provided by Cyril Catt, Australia
  2011.06.19 - Aristo - Added four slide rules archived from Sphere Research website and HSRC gallery.
  2011.06.19 - People w/SR's - Added two (2) pictures, one from the Movie Sky Captain, World of Tommorow
  2011.06.19 - ISRM Intro - Added clarification to image prefix codes
  2011.06.15 - Relay/Ricoh - Modified Lafayette 99-7102 Vectorlog (Same as F-686) listing.
  2011.06.13 - Pickett - Added Model 598 "R" Parameter Slide Rule. Scan by Richard Davis
  2011.06.05 - Menu - Added ALKU and Ransley, W. links.
  2011.06.05 - MiscEuro - added ALKU Rechenschieber scan donated by Nathan Zeldes, Israel
  2011.06.05 - People w/SRs - added two (2) new photos/ephemera, one is a decal from Auburn University from Amin Aur
  2011.06.04 - Rarities - Added W. Ransley sector slide rule scan by Nathan Zeldes, Israel
  2011.06.03 - Aristo - Added photos of Aristo 203 projector slide rule.
  2011.06.01 - Sterling - Added repaired Sterling 584 which belong to ISRM Curator's parents, Les and Susan Konshak.
  2011.05.29 - Who's Who - Inducted the late Wayne E. Feely, known for his expertise in Cylindrical SRs.
  2011.05.27 - Australian - Added ARCUS slide rule, scan by Cyril Catt
  2011.05.25 - Who's Who - Rearranged recipients into two columns. Inducted Bryan Purcell.
  2011.05.25 - Menu - Added ISRM What's New webpage, to let users know where to look.
  2011.05.25 - Menu - Added Towl, Forrest link.
  2011.05.24 - Rarities - Added Forrest M. Towl Pipe line slide rule.
  2011.05.16 - Circular - Added Gilson Midget, Donated by Ric Turley im memory of Glenn Wood
  2011.05.16 - SlideCharts - Added Piping Selector, Donated by Manual Gimeniz
  2011.05.15 - Updated Bernard Boykin entry and photo. He passed on May 12.
  2011.05.14 - People w/SRs - added 4 new photos/ephemera.
  2011.05.11 - Added picture to David Reub's entry.
  2011.05.15 - Search -Added new search engine by JRank. The last one would never update the index.
  2011.05.14 - Pickett - Added two models of Dow Chemical Pipe Flow slide rules models 1060 and 1060-ES with picture/bio of original owner, Father of Rick Mandrell.
  2011.05.14 - Received donation of Pickett 1060-ES Dow Chemical Pipe Flow slide rule. Donated to ISRM by Rick Mandrell
  2011.05.24.01 - Circular - Added Graphic Chemical Predictor, donated by Ginger Even, in memory of Father, Norman D. Fulton Jr.
  2011.05.16.01 - Received donation of Gilson Midget 1932-1936 belonged to Roy Glenn Wood, provided by Ric Turley, Pinecliff, Colorado.
  2011.04.16 - Who's Who - Inducted Lieb Stern to gallery.
  2011.04.15 - Library-Soviet - Added Lieb Stern Compressor manual (Crylic).
  2011.04.15 - MiscUSSR - Added Lieb Stern Compressor Slide rule under LFAI factory.
  2011.04.14 - Library-Europe/SA - Added Archimedes and Plastograf (Portugese) manual scans, Donated by Joao Gabbardo, Brazil.
  2011.04.13 - MiscWorld - Added Several Archimedes and Plastograph slide rule scans, Donated by Joao Gabbardo, Brazil.
  2011.04.09.01 - Pickett - Model 600ES owned by Andy Keller (1942-2010) donated by his wife. Added variation to gallery.
  2011.03.23 - Donation - A variety of 19 basic Slide rules to support Student Loan program from David Sweetman
  
  • 11.03.23.01 - Lawrence 10-B with Magnifying Cursor in sleeve painted back - add to isrm
  • 11.03.23.02 - Dietzgen 1767 National - replace in ISRM
  • 11.03.23.03 - Engineering Inst 250-V in blue sleeve - add to isrm
  • Sterling 594 Decimal Trig Log Log - for Adoption
  • Sterling 594 Decimal Trig Log Log - add to ISRM
  • Sterling 685 Red/Black text
  • Sterling 584 Red/Black Text, In clear plastic hard sleeve - US Navy - Belonged to Walter T. Irwin -Add to ISRM
  • Sterling 584 Black Text - for Adoption
  • Sterling 584 Black Text - yellowed for Adoption
  • Sterling 584 Black Text - replace in isrm
  • Sterling Pocket 587 plain - replace in ISRM
  • Sterling Pocket 587 promo - replace in ISRM
  • Sterling Pocket 587 w/ sleeve and instructions - replace in ISRM
  • Pickett Model 3 w/o cursor Very bad
  • Pickett 120-ES wide in sleeve - for Adoption
  • Pickett 120-T wide in sleeve added retail box - replace in ISRM
  • Pickett 120 trainer in brown sleeve (Black braces) - for Adoption
  • Acumath 400 - to Loaner
  • Acumath 400 - to Loaner
  2011.02.07 - SR_Library/Japan - Added Hemmi Mannheim Instructions, Models 30, 32, 34, 34RK, 40RK and 50W. Scan donatred by Alessandro Castellani, Italy
  2011.02.28 - Donation - Bonney Forge Piping Sector disk from Manual Gimeniz,
  2011.02.14.01 - Donation - Acu-math 400,Simplex Trig, round corners, no Logo c1968
  

  ---

  2010.12.12 - Donation of several slide rules gifted by Andrew Keller, Longmont, Colorado
  
  • 10.12.12.01 - Teledyne Post 1426 Business (Hemmi P452)
  • 10.12.12.02 - Pickett N4-ES Vector-Type Log Log 1960-62 (may be tagged as ISRM 12.01.21.01)
  • 10.12.12.03/M100 - Pickett N-515-T Electronic CIE Logo
  • 10.12.12.04 - Pickett N-531-ES Capitol Radio Engineering Institute
  • 10.12.12.05 - Pickett N902-T Simplex Trig Modern Logo Curved Braces. to gallery
  • 10.12.12.06 - Pickett N1010-ES Trig Duplex V2 red inverse scales. brown leather sleeve.) - for Adoption
  • 10.12.12.07 - Pickett N902-T Simplex Trig Round black logo, Square Braces, retail box with ephemera. "Herb Stark" written on box. to gallery
  2010.10.23.01 - Pickett - Added 8-T McGann Density Computer.
  2010.09.15.03 - Circular - Jeppesen Computer Model R-1. Gift of James Robert Weber Estate.
  2010.09.15.02 - Circular - Jeppesen Computer Model R-2. Gift of James Robert Weber Estate.
  2010.09.15.01 - Circular - Dalton Dead Reckoning Computer, Type E6B AN-5835-1 Military Version cWWII. Gift of James Robert Weber Estate.
  2010.09.14.02- Circular - Compass Midget (1931, 1936) - 10.2cm dia Donated by David Viscusi, Carlsbad, California
  2010.09.14.01 - Ricoh -Lafayette F341 Duplex Log Log Trig Donated by Ed Millis, Dallas, TX
  2010.09.13.02 - Pickett and Circular - Added Pickett 101-C Donated by Mike Medlock, Greenwood, Indiana
  2010.09.13.01 - Hemmi - Added "Byoutou," 1944 slide rule, owned and donated by Dr. Di Chen, Physicist, Minnisota
  2010.09.12 - Donation of slide rules from Robert Weber Estate. Gift of Terry Cook. Administrator
  
  • 10.09.12.01 - Post 1462 Note: Metal Ends
  • 10.09.12.02 - Dalton dead Reconing Computer
  2010.09.09.01 - Richardson - SR donation by Bill Weinman.Eugene, Oregon
  2010.08.20 - Donation - Hemmi Electrical SR, Dr. Di Chen, Physicist, Minnisota
  2010.06.20 - Donation - Oughtred Society Slide Rule Reference Manual from Clark McCoy, Oughtred Society.
  2010.05.10.01 - Donation of Pickett N1010-ES by Al White Colorado. Al used this while working at Bendix Corp in Teterboro, New Jersey in their drafting department. 1964-1972.
  2010.03.02 - Donation - A variety of 9 Slide rules/slide charts from Robert E. Eaton, Univ CO, Boulder.
  
  • 10.03.02.01 - K&E 4092-3 sn526892 Good, markings on stock, complete sleeve w/markings - Replaced Cursor
  • 10.03.02.02 - K&E 4100 Stadia Slide Rule
  • 10.03.02.03 - Pickett N500-ES HI LogLog Round Yellow logo. Slide Rule w/manual, Favorite Slide rule of Robert E. Eaton
  • 10.03.02.04/M101 - American Airlines Navigational Computer Type "B", Favorite Slide rule of Charles H. Eaton Inst w/ SR
  • 10.03.02.05 - Concise Science Tables and Slide Rule - US Govt.
  • 10.03.02.06 - Whitehead Holding Pattern Computer
  • 10.03.02.07 - Post 4161 Pocket Versalog Slide Rule
  • 10.03.02.08 - Fosdick Drilling Calculator Slide chart
  • 10.03.02.09 - Metrics Made Easy Slide chart
  2010.03.01 - Donation - 23 K&E 4053 7 K&E 4081 Slide rules from Martha H. Prince, Tuscon, AZ. Part of John prince Collection.
  
  • 10.03.01.01 - 4081-3 sn266 Excellent, box, sleeve, brochure "Horse Sense", no markings except price $25.50 on box
  • 10.03.01.02 - 4081-3 sn195398 Good, Replacement for S006, name on sleeve flap to ISRM
  • 10.03.01.03 - 4081-3 sn365785 1948, Replacement for S005 to ISRM
  • 10.03.01.04 - 4053-3 SN 741, 1913 Alum frame cursor,Very Good, Cdbd sleeve Add to to ISRM
  • 10.03.01.05 - 4053-3 SN 267, 1914 All glass cursor(reman), metal blocks, Very Good, Leather sleeve (no Flap), 'Leo.Frank 1914' in well on back of stock, Add to to display
  • 10.03.01.06 - 4053-3 SN 801, 1915 All glass cursor(chipped), metal blocks, Very Good, Cdbd sleeve Add to to ISRM
  • 10.03.01.07 - 4053-3 SN 917, 1915 All glass cursor(glass repaired), metal blocks, Very Good, Leather sleeve (no Flap) Added to ISRM K&E Gallery
  • 10.03.01.08 - 4053-3 SN 59, 1916 All glass cursor, plastic support, Excellent, No markings, Good Leather sleeve w/flap, Add to For Display
  • 10.03.01.09 - 4053-3 SN 476, 1922 All glass cursor, plastic support, Used glass from sn16. To ISRM.
  • 10.03.01.10 - 4053-3 SN 44, 1922 w/1936 replacement improved cursor. Excellent. No Markings. Leather sleeve missing flap. To ISRM
  • 10.03.01.11 - 4053-3, Production #317, 1915 (the only year with the metal cursor bars) To ISRM
  • 10.03.01.12 - 4053-3 SN 545, 1916 All glass cursor, plastic support, Fair Case, Name 'Rand'on back of stock
  • 10.03.01.13 - K&E N4053-3 S/N 920438 c1916-1933
  • 10.03.01.14 - K&E N4053-3 S/N 178042 c1933-1935
  • 10.03.01.15 - K&E 4080-3 sn558863 1937 scale set (rare) black cardboard sleeve, Stock has Frank Morton scratched in it - to gallery
  2010.02.10 - MiscJapan - Added Royal 1091, scan provided by Phillip Rodley of New Zealand.
  

  ---

  2009.12.09.01 - Received donation of Nestler Rietz S, OEM Made by Uchida Yoko Co., Tokyo, Japan. Donated by Goichi Iida of Uchida Yoko Co., Tokyo, Japan.
  2009.02.01.01 - Circular - Air Force Type MB-2A Air Navigation Computer. Donated by Jason McHenry, Tucson, Arizona
  2009.11.16.02 - Concise - Added Sama & Etani/Concise CTCS-552 Slide Rule - Copyright 1967 Donated by Jason A. McHenry, Tucson, Arizona
  2009.11.16.01 - Concise - Added Sama & Etani/Concise EE-112 Reactance Slide Rule - Copyright 1966 Donated by Jason A. McHenry, Tucson, Arizona
  2009.10.30.02 - Added Engineering Instruments Book Version, included with the book Mathematics Made Simple
  2009.10.30.01 - Acquired and posted Charvos Roos PSR-101D (W.J. Boos patent)
  2009.10.27.02 - Added(Replaced) Pickett 120 Trainer and Pickett catalog sheets.
  2009.10.27.01 - K&E - N4083-03 owned by Vern Estes, founder of Estes Rockets. Canyon City, Colorado
  2009.10.23.01 - Pickett - Received Donation of Picket N902-ES from Roberta Rosty, Saddlebrook, New Jersy
  2009.10.21 - Received donation of slide rule collection belonging to Martin C. Jensen of Redlands, California. Added to Who's Who Gallery
  
  • 09.10.21.01 - Pickett N4-T Vector Type Log Log, with Round braces and metal cursor bars
    
  • 09.10.21.02 - Aristo Rietz 89 Pocket Rule
    
  • 09.10.21.03 - Pickett Microline 160-T Pocket Rule
    
  • 09.10.21.04 - Pickett N800-T Log Log Speed Rule
    
  • 09.10.21.05 - Slide Chart Kemet Reactance Calculator Union Carbide. Cleveland, Ohio
    
  • 09.10.21.06 - Slide Chart Delco-Remy QC S-Q-C-Lator General Motors Corp.
    
  • 09.10.21.07 - Slide Chart Vitramon Reliability Calculator Vitramon Inc.
    
  • 09.10.21.08 - Slide Chart Mallory Capacitor Calculator Mallory Capacitor Co.,
    
  • 09.10.21.09 - T & T Fast Calculator, Circular slide rule, with instructions
    
  • 09.10.21.10 - General Electric - Defense Electronics Division, Circular slide rule, with instructions
    
  • 09.10.21.11 - Concise 28N Motorola Semiconductors, Circular slide rule, with instructions
    
  2009.04.24 - Received donation of slide rules from Jürgen Nestler in Germany. Many NOS from the factory which closed in 1972
  
  • 09.04.24.01 - Nestler_23R_v1
  • 09.04.24.02 - Nestler_23R_v2
  • 09.04.24.03 - Nestler_Beta_0252_dc10-69
  • 09.04.24.04 - Nestler_Darmstadt_0210_dc2-75
  • 09.04.24.05 - Nestler_Darmstadt_0218_dc166
  • 09.04.24.06 - Nestler_Electro_0370_dc175
  • 09.04.24.07 - Nestler_EleMath-LogLog
  • 09.04.24.08 - Nestler_Hanseat_0408
  • 09.04.24.09 - Nestler_Mechanica_0260
  • 09.04.24.10 - Nestler_PolyMath-Duplex
  • 09.04.24.11 - Nestler_SystemJAKOB_0439_dc2-74
  • 09.04.24.12 - Nestler_0320_Oil-Rule
  • 09.04.24.13 - Nestler_No0215_Darmstadt
  • 09.04.24.14 - Nestler_EleMath RS Duplex
  2009.03.24.01 - Added Alco #305 Basic Manheim, made in Japan. in its retail package
  . 2009.02.28.02 - United States - Added Lietz 3050N made by Charvoz Roos
  2009.02.28.01 - Germany - Added Reiss 3201 Rietz-Spezial.
  2009.02.01.01 - Circular - Safetech E6-B Flight Computer Model FDF-60. Owner: Mike Konshak
  2009.01.13 - Hemmi - Added pre-1940 Hemmi manufacturing process web page, translated by Atsushi Tomozawa, Japan.
  2009.01.20 - Hemmi - Added Hughes-Owens 1768C dcPA, donated by David Hecht Collection
  2009.01.12 - Donation - Received a generous number of slide rules from the David Hecht Collection. We gave David a rare Pickett as a gift
  
  • 09.01.12.01 - K&E N4088-5 snX6623X New improved cursor c1940-1955
  • 09.01.12.02 - (Ricoh) Compass 1321 PS-4
  • 09.01.12.03 - Compass 1018
  • 09.01.12.04 - Compass 505 (Date Code K.K-4
  • 09.01.12.05 - Alvin 222P X-Act
  • 09.01.12.06 - AA SR815 dcJK-4 (1961)
  • 09.01.12.07 - Engineers No.1050 dc KK-4 (1960)
  • 09.01.12.08 - Engineers No.1500 Duplex Decitrig Log/Log dcLS-4 (1963)
  • 09.01.12.09 - Jason 802 Decitrig Log/Log dcLS-4 (1963)
  • 09.01.12.10 - Lafayette F341 Duplex Log Log Decitrig
  • 09.01.12.11 - Lafayette 99-70302 (Date Code US-3)
  • 09.01.12.12 - Lafayette 99-7031 Duplex Decitrig Log/Log dcNS-2
  • 09.01.12.13 - Lafayette 99-70310 Duplex Decitrig Log/Log dcNS-2
  • 09.01.12.14 - Lutz 252 U.S.
  • 09.01.12.15 - Micronta (Nestler) 14/52
  • 09.01.12.16 - Micronta 157 Electrical Duplex Vectorlogdc dcJ.K-4
  • 09.01.12.17 - Compass 505 (Date Code H.K-2)
  • 09.01.12.18 - Olson TL-373 (Relay 150) dc JK-4 (1961)
  • 09.01.12.19 - Relay 150 Log-Log Decitrig dcB.K-4
  • 09.01.12.20 - Relay 153 Decitrig dc HS-2
  • 09.01.12.21 - Relay 550 dcBS-2 - Open Duplex
  • 09.01.12.22 - Lafayette_99-7032 (No Date Code)
  • 09.01.12.23 - Relay DT-1015 Trig
  • 09.01.12.24 - Relay T-1031 dcKK-4
  • 09.01.12.25 - Ricoh 82 - Closed simplex dc US-5
  • 09.01.12.26 - Ricoh 102 - Closed simplex dc US-5
  • 09.01.12.27 - Ricoh 153 Trig dc LS-2
  • 09.01.12.28 - Ricoh 252 dcLS-4
  • 09.01.12.29 - Zodiak No 150 Duplex Log Log Trig dc DK-4
  • 09.01.12.30 - Hemmi 258 (Post 1460 Versalog) 1951
  • 09.01.12.31 - Sun Hemmi P261 dcXE
  • 09.01.12.32 - Sun Hemmi P262 dcXG
  • 09.01.12.33 - Sun Hemmi P280 (Ahrend 435660) c1973
  • 09.01.12.34 - Sun Hemmi P281 c1973
  • 09.01.12.35 - Hemmi P452 - Business, System H. Kroon
  • 09.01.12.36 - (Hemmi) Hugh-Owens 1766 Electronic
  • 09.01.12.37 - (Hemmi) Hugh-Owens 1768C - date code PA (Jan 1965)
  • 09.01.12.38 - (Hemmi) Hughes-Owens 1777 dcHK (Same as Post 1460 Versalog)
  • 09.01.12.39 - (Hemmi) Hughes-Owens 341-3010 dcSH (Same as Post 1460 Versalog)
  • 09.01.12.40 - (Hemmi) Hughes-Owens 34-3120 Versatrig
  • 09.01.12.41 - Post 1445 8 in Closed Simplex
  • 09.01.12.42 - Post 1446 (post-WWII)
  • 09.01.12.43 - Post 1447 - Date Code CB on front face, no Post logo
  • 09.01.12.44 - Post 1447 - Oval Post Logo on upper stator
  • 09.01.12.45 - Post 1461 Versalog II (Pocket) dcTG
  • 09.01.12.46 - Post 1460 Versalog - Marked Hemmi 258, dcBA
  • 09.01.12.47 - Post 1461 Electronic (1936)
  • 09.01.12.48 - Nestler 0121 Darmstadt
  • 09.01.12.49 - K&E 4051-5 (1936)
  • 09.01.12.50 - K&E 4058W Beginner's Slide Rule (1930-1943)
  • 09.01.12.51 - K&E 4181-1 Log Log Duplex Decitrig S/N 003925
  • 09.01.12.52 - K&E 68-1434 S/N 131170 Log Log Duplex Vector
  • 09.01.12.53 - K&E 68-1565 GP12- Simplex S/N 011932
  • 09.01.12.54 - Faber-Castell 67/87 Rietz Pocket(1965)
  • 09.01.12.55 - Faber-Castell 67/39 Rietz Pocket(1952)
  • 09.01.12.56 - Faber-Castell 67/39 Rietz - 5in (1968)
  • 09.01.12.57.X - Faber-Castell 52/82 Schul D-Stab date code 3A deaccessioned 23.08.14
  • 09.01.12.58 - Faber-Castell 57/86 Columbus date code 573 (May 1973), 1962 copyright
  • 09.01.12.59 - Faber-Castell 57/87 Reitz date code 157 (Jan 1957)
  • 09.01.12.60 - Faber-Castell 57/87 Rietz Schul-Rechenstab, date code 1163 (Nov 1963)
  • 09.01.12.61 - Faber-Castell 57/87 Reitz Schul-Rechenstab, date code 965 (Sep 1965)
  • 09.01.12.62 - Faber-Castell 157/87 Rietz, date code 3A (1952), Injection Molded Geroplast
  • 09.01.12.63 - Pickett N-500-ES HI Log Log c1962, Round Black Logo , curved finger braces, Nylon cursor
  • 09.01.12.64 - Pickett Model 300 Log Duplex c1949
  • 09.01.12.65 - Pickett Model 1006 Trig (c1949)
  • 09.01.12.66 - Charvoz-Roos PSR-101
  • 09.01.12.67 - Charvoz-Roos SR-109 (Wood Stock), two-piece clear plastic cursor, c1946
  • 09.01.12.68 - Charvoz-Roos Log-Log (Model Unknown), printed scales. David's number:033
  • 09.01.12.69 - Charvoz (Aristo) 870 Multilog, date code 592 (1959). David's number:323
  • 09.01.12.70 - CREI Charvoz (Aristo) 0903LL Scholar. date code G6011 (1960). David's number:003
  • 09.01.12.71 - Aristo Nr. 89 (Rietz) Date Code GFF15 (1966)
  • 09.01.12.72 - Aristo 99 - Date Code GFF11 (1966)
  • 09.01.12.73 - Aristo 801 Rietz (Charvos-Roos) (in both MiscUSA/Charvos and Aristo galleries)
  • 09.01.12.74 - Aristo 867U Darmstadt - dc HF023 (1965). David's number:320
  • 09.01.12.75 - Aristo Nr. 89 (Rietz) Date Code GFF15 (1966) David's number:322
  • 09.01.12.76 - Aristo 0903 Scholar Note different scales - date code 3FX5 (1969) David's number:006
  • 09.01.12.77 - Aristo 0903 Scholar, date code WLA06 (1970) Note: Aristo and Model number in red David's number:008
  • 09.01.12.78 - Aristo 0903 Scholar, Note different scales - date code 3LT41 (1974) David's number:007
  • 09.01.12.79 - CREI Aristo 0903LL Scholar (Charvoz) date code G6011 (1960) David's number:003
  • 09.01.12.80 - Aristo 0903 VS-2 Scholar, date code 3FE49 (1968) David's number:004
  • 09.01.12.81 - Aristo 0903 VS-2 Scholar, date code 3LS15 (1973) David's number:005
  • 09.01.12.82 - Aristo 0905 Shut-Commerz (Commerce), date code 3FE74 (1968) David's number:009
  • 09.01.12.83 - Aristo 0906 Bi-Scholar, date code 3LA91 (1970) David's number:011
  • 09.01.12.84 - Aristo 0908 TriLog dcGFF25 with insert. David's number:013
  • 09.01.12.85 - Aristo 915E Elektro - dc 2LA02 (1970). David's number:015
  • 09.01.12.86 - Aristo 965 Shut-Commerz II (Commerce). date code G641 (1964),David's number:016
  • 09.01.12.87 - Aristo 967U Darmstadt, date code 535 (1953),David's number:018, David's number:018
  • 09.01.12.88 - Aristo 967U Darmstadt with clear rear scale window, date code 2FX07 (1969), David's number:019
  • 09.01.12.89 - Aristo 870 Multilog - date code 592 (1959) David's number:323
  • 09.01.12.90 - Diwa 601, Maxon Premix Burner Co. Muncie, Indiana
  • 09.01.12.91 - Pickett Model 20
  • 09.01.12.92 - Alco #305 Basic Manheim, made in Japan. (note: ISRM has one in its retail package).
  • 09.01.12.93 - Diwa 911 Laminated wood with metal braces. Resembles early Dietzgen patent.
    
  • 09.01.12.94 - Pickett 800-ES - Log Log Synchro-Scale - 1954, metal cursor bars, rounded braces, grooved slide.
  • 09.01.12.95 - Pickett Model 200 Trig National Carbon Co. Promotional Slide Rule
  • 09.01.12.96 - Pickett Model 200 Trig RCA Promotional Slide Rule
  • 09.01.12.97 - Pickett Model 200 Trig Zach Radio Supply Promotional Slide Rule
  • 09.01.12.98 - W.H. Smith - Jakar 29 Student Log/Log
  • 09.01.12.99 - Wiljon Technik-Art Log Log Trig
  • 09.01.12.100 - Blundell Harling S143-20
  • 09.01.12.101 - Blundell Omega 405 Basic
  • 09.01.12.102 - Blundell Omega 602 Log-Log
  • 09.01.12.103 - Blundell Harling Classmate 812-1
  • 09.01.12.104 - Blundell Harling Classmate 813
  • 09.01.12.105 - Veb Mantissa Mono Rietz 1731 541
  • 09.01.12.106 - Eco-Bra 1611 Darmstadt Special
  • 09.01.12.107 - Reiss Rietz
  • 09.01.12.108 - Reiss Darmstadt DDR
  • 09.01.12.109 - Staedtler Mars 944-82 Log Log
  • 09.01.12.109 - VEB Electro-Apparate-Werke (EAW) Pocket
  • 09.01.12.110 - UTO 930 Studium
  • 09.01.12.111 - Logarex 27103 Rietz (early)
  • 09.01.12.112 - Logarex 27401-X Rietz
  • 09.01.12.113 - Tianjin Squirel 6502
  • 09.01.12.114 - Shanghai May 7th (c1968-1978)
  • 09.01.12.115 - Nestler 0121 Darmstadt Pocket
  • 09.01.12.116 - Pickett N803-ES Modern logo, curved braces, grooved convex lens.
  • 09.01.12.117 - Post 1462H Postrig Made in Occupied Japan 1945-1952, Markings of Owner: H.L Dillingham, North Highlands, 4104 Alan Drive. Replaced in Gallery by 18.04.06.06 For Sale
  • 09.01.12.118 - Lietz 2971-P - date code 57-11 (Nov 1957)
  • 09.01.12.119 - SIC 1530 Technilog dc1961
  • 09.01.12.120 - SIC 1530 Technilog dc1962 with diamond logo
  • 09.01.12.121 - Dietzgen 1765P dc958
  • 09.01.12.122 - Dietzgen 1772A
  • 09.01.12.123 - UTO F2145
  • 09.01.12.124 - UTO Nr3-931U Poly-e Studium
  • 09.01.12.125 - UTO No. 1 Studium
  • 09.01.12.126 - UTO 503 Studium
  • 09.01.12.127 - UTO 561 Studium
  • 09.01.12.128 - Dietzgen 1776 - 5" Redirule ADV: Electronic Specialty Co.
  • 09.01.12.129 - Graphoplex 1600 System Rietz to gallery
  • 09.01.12.130 - Nan Hui 5901 Log Log after 1956
  • 09.01.12.131 - Koh-I-Noor (Graphoplex) 10020 Techni-Math
  • 09.01.12.132 - Unknown 10" Japanese Model 883 to gallery
  • 09.01.12.133 - Japanese Generic Pocket Mannhiem (Unknown Manufacturer) to gallery
  • 09.01.12.134 - Japanese Generic Pocket Mannhiem (Fawick Airflex Ad) to gallery
  • 09.01.12.135 - Pickett Microline 115 - Decimal Keeper to gallery
  • 09.01.12.136 - RCA No.551 Duplex
  • 09.01.12.137 - Graphoplex 640 System Electric Log Log to gallery
  • 09.01.12.138 - Lutz 102S U.S.- duplicate
  2009.01.11.01 - Received donation of 4 foot Pickett N15-T GIW Hydraulic slide rules
  2009.01.11.01 - Received donation of Pickett N15-T GIW Hydraulic slide rules From Dennis Hagler, of Georgia Iron Works. Including a 4 ft version.SR and 1970 Manual Donated by Reab Berry of GIW Industries, 1961 Manual Donated by Dan Hagler(designer of SR). Some artifacts donated by ISRM to the Smithsonian Math History Museum.
  2008.12.09 - Received collection of 33 Circular Slide Rules (Disk Charts) designed or collected by N. Thomas (Tom) Sheahan of Murrieta, CA.
  
  • 08.12.09.01. Rate of Flow Calculator: Origin unknown :(date unknown); Circular, with manual; (Three copies of same slide rule)
  • 08.12.09.02. Boiler Steam Cost Calcul~tor: Cleaver and Brooks :(1965); (Two copies of this slide rule)
  • 08.12.09.03. Friction Loss Calculator: Cast Iron Pipe Research Association; With manual :(1977)
  • 08.12.09.04. Hydro-Pneumatic Tank Calculator: Automatic Control Company :(1948)
  • 08.12.09.05. Valve Sizing Calculator for Liquids: Keystone Valve :(1961)
  • 08.12.09.06. Valve Sizing.Calculator for Gas and Steam: Keystone Valve :(1965)
  • 08.12.09.07. Air Valve Computer: APCO Valve and Primer Corp. :(1966)
  • 08.12.09.08. Industrial Pressure Switch Calculator: Square D Company :(1968)
  • 08.12.09.09. Heating Cost Calculator: Cleaver Brooks :(1966)
  • 08.12.09.10. Bituminous Concrete Calculator: Layton Mfg. Co. :(date unknown)
  • 08.12.09.11. Heater Element Calculator: Allen Bradley :(1970)
  • 08.12.09.12. Head Loss and Pumping Cost Calculator: Johns Manville :(1981)
  • 08.12.09.13. Salinity Calculator: Foxboro :(1968)
  • 08.12.09.14. Safe Bore Drilling Speed Calculator for Carbide Tipped Drills: Drillmation Co. :(1967); Circular
  • 08.12.09.15. Pumping Horsepower Calculator: Minneapolis-Moline :(1967); Circular
  • 08.12.09.16. Socket Screw Calculator: Standard Pressed Steel Co. :(date unknown)
  • 08.12.09.17. Energy Cost of Electric Motors Calculator: Gould :(1977)
  • 08.12.09.18. Carbon Calculator: Harry W. Dietert Co. :(1944); Circular
  • 08.12.09.19. Motor Data Calculator: Square 0 Company :(1964)
  • 08.12.09.20. Tariff Weight Computer for Light Density Shipments: National Bus Traffic Association, Inc.:(1968); Circular
  • 08.12.09.21. Percent-Eze Calculator for Proportional Sizes and Camera Settings: Robertson PhotoMechanix,Inc. :(1967); Circular
  • 08.12.09.22. Pile Capacity Calculator: The Foundation Equipment Corp. - :(date unknown)
  • 08.12.09.23. Cost Percent Profit on Selling Price (Gross Margin) Calculator: La Mosa :(date unknown);Circular
  • 08.12.09.24. Lead-Line Stress Calculator for Wire Rope: Roebling & Sons :(1945)
  • 08.12.09.25. Refraction Seismograph Calculator: Hand-made working Prototype, Designed by N. Thomas Sheahan (circa 1968); Circular, with instructions on back,and hand-written instructions.
  • 08.12.09.26. Earth Resistivity Calculator: Hand-drawn Prototype, Designed by N. Thomas Sheahan (Circa 1969), with hand-written instructions.
  • 08.12.09.27. Pump Characteristics Calculator: Prototype, Designed and hand-made by N. Thomas Sheahan (Circa 1968)
  • 08.12.09.28. Noise Exposure Limits Calculator: Columbia Research Laboratories, Inc. :(date unknown);Circular
  • 08.12.09.29. Chemical Waste Treatment and Disposal Facilities Calculator: CECOS Internationl :(1986)
  • 08.12.09.30. Flow Calculator: CIBA GEIGY Pipe Systems :(date unknown); With manual and case.
  • 08.12.09.31. 16mm Sound Motion Picture External-Costs Estimator: Allstate Insurance Co. :(1968); Cutout
  • 08.12.09.32. 'Spring Design Calculator: INFO, Inc. :(1967); With Manual
  • 08.12.09.33. Universal Calculator for Flow of Water in Pipes: Grinnell Company :(1944); Copy, only, with instructions.

• M226 - Post 1447 Slide Rule Instructions
• M180 - K&E How to Choose A Slide Rule

• 04.11.10.01 - Aristo 868 Studio - date code 2LST5 (1973) NIB
• 04.11.10.02 - Aristo 870 Multilog - date code 2FL09 (1967) NIB
• 04.10.21.01 - Geo. W. Richardson's Direct Reading Slide Rule - 1909
• 04.11.09.01 - Geo. W. Richardson's 'Slide Rule Of 1917' for J. H. Weil & Co.
• 04.06.15.01 - K&E Short Base Triangulation Rule US Army
• 05.01.04.01 - Sterling 684 10" Mannheim, white - 1968
• 06.01.24.01 - Sterling 684 10" Mannheim, Epoxied - 1968 Belonging to Leslie Konshak
• 04.10.09.01 - Sterling 565 Sterling 565 "Dial-A-Matic Automatic Adding Machine
• 04.04.22.01 - K&E 4081-5 20" LogLogDeciTrig sn860426 Replaced cursor with spacers
• 04.04.23.02 - K&E 4092-3 LogLogTrig sn256159 Retrofit one cursor glass with plastic lens from S.I.C. cursor
• 04.04.22.02 - Post 1447 - date code dcBI Post logo on slide
• 04.11.11.01 - Nestler 0291 had missing cursor -Pickett 140 fits fine!
• 04.10.12.01 - Veb Mantissa Record 1731-421 (was S437)
• 04.07.03.01 - Reiss Darmstadt DDR
• 04.09.20.01 - Staedtler-Noris_944-02 - Open simplex (was S361)
• 04.11.10.03 - Aristo 901 Junior dc1S67 Logo Stamped In Brace. Replaced with 15.05.12.01 dcWFX25 from Colin Barnes
• 04.11.10.04 - Aristo 903LL Scholar Logo Stamped In Brace
• 04.11.10.05 - Aristo 0969 StudioLog with "M" logo
• 04.04.22.03 - Pickett Model 80 Black and clear sleeve
• 05.03.10.01 - Acumath Connecticut Spring Corp Spring Design - c1955
• 04.09.27.01 - C-Thru S-96 Circular Slide Rule
• 04.09.27.02 - Crichlow Circular coastal artillery Slide Rule - 1936 One-sided - to military
• 04.09.27.03 - Gilson Midget Binary 8in Circular Slide Rule (1931, 1936)
• 04.09.27.04 - Pickett_109-ES_Circular
• 04.09.27.05.X - Pickett 101-C Round logo 1962 Variation 3 to gallery (removed from Shadow box D1) Deaccessioned
• 04.09.30.01 - USAF Type A-1 Aerial photo slide rule S191
• 04.11.03.01 - K&E 4160 Chemists Slide Rule sn284743
• 04.04.22.04 - Faber 2/82N NovoDuplex in Display box (was S121)
• 04.04.22.05 - Weems & Plath Nautical Slide Rule
• 03.00.00.55 - 76mm Howitzer graphical Tables two slide rule set

Earlier additions to be added as I am able to recreate the history of updates.
2003.03.14 - π day - Official founding of the ISRM presence on the world wide web on www.konshak.com.