Miscellaneous USA
KEEP ISRM FREE!
You will note that many United States Companies OEM'd some of their slide rule models from other countries. This is not a practice employed by the other countries themselves (i.e. buying from the USA and put their name on them). It was probably less from national pride as it was a method of the United States in helping to rebuild European and Japanese economies after WWII and in some cases, like Post and Dietzgen, to renew their relationships as it was before the war.

Alvin



ISRM Alvin 222P X-Act 		Alvin 222P X-Act
Made by Denmark - Similar to UTO models
Front Scale
5.5in // K, A[ B, CI, C ] D, L
Back Scale: [ S, ST, T ]
Donated by david Hecht, Alexandria, VA


S571 Alvin 1150 Elite Decilog		 Alvin 1150 Elite Decilog
Made in Japan by Relay (RS-6) for Alvin
Front Scale
LL0, LL00, A [ B, K, CI, C ] D, S Cos, ST, T Cot
Back Scale
L, LL1, DF [ CF, CIF, CI, C ] D, LL3, LL2
Multilined Cursor: Kw, HP, etc.

Beta Enterprises



ISRM Beta Enterprises ABA-TEN Rule		 Beta Enterprises ABA-TEN Rule
Made in USA - By Beta Enterprises, Salinas, CA (1971)
Front Scale : 12 in // [ a ] [ b ] \\ 30cm
Back Scale : C1 [ D ] C2
Used for addition/subtraction, as well as multiplication/division
Instructions 1.48MB

Bill-Mar Speciality Co., Ohio

A widely diversified company that produced specialty slide rules. The only two styles that are known are concrete volume calculators, but as there are models #24 (made in Japan) and #89 (made in Hong Kong), shown in the gallery, there must be other varieties as well.


Bill-Mar Sp. Co. Concrete Calculator No.24
ISRM 13.05.19.01		 Bill-Mar Sp. Co. Concrete Calculator No.24
Made in Japan for Bill-Mar Speciality Co., Ohio (c1970)
Front Scale : A (Thickness) [ B (Width or Height), C (Length)] D (Cubic Yards), Dia Inches
Back : Instructions.
Back Advertising: El Paso Sand Products, Inc. (Colorado)
Donated by Jeremiah Whitney, Louisville, Colorado
Jeremiah Wadsworth Whitney (1941- ) used this slide rule in his career as an Architect.He graduated with a B.Arch degree from Yale University in 1963, and as part of the Officer Candidate School, he spent the next 5 years (1963-1968) as a commissioned officer, in the U.S. Naval Reserves, achieving the rank of Lieutenant, He received his MS.Architecture from Yale in 1971, then relocated to Colorado and specialized in residential design for developers. Photo taken by ISRM in 2013.


Bill-Mar Sp. Co. Concrete Calculator No.89
REF		 Bill-Mar Sp. Co. Concrete Calculator No.89
Made in Hong Kong for Bill-Mar Speciality Co., Ohio (c1990)
Note: Similar in construction to low cost folded thin sheet slide rules made by C-Thru
Front Scale : A (Thickness) [ B (Width or Height), C (Length)] D (Cubic Yards), Dia Inches
Back : Instructions.
Back Advertising: SOUSA READY MIX, Mt. Shasta, California
Archive - Scan by Prof. Christian M. Hamann Collection, Germany

Arthur Brown & Bro



P210 Arthur Brown & Bro 7993A		 Arthur Brown & Bro 7993A
Made in USA (looks like by Bruning)
Front Scale : 12.5cm // A [ B, CI, C ] D, K \\ 5in
Back Scale : S, L, T
Back: Blank


ISRM Arthur Brown & Bro 7996A		 Arthur Brown & Bro 7996A
Made in USA (by Roos)
Material: Wood stock with plastic laminate 
Front Scale (Scale similar to Post 1457)
T Cot, DF [ B, K, L, C ] D, S Cos, ST
Back Scale
Fraction-Decimal [ CF, CIF, CI, C ] Trig identities

Charles Bruning



ISRM Charles Bruning 2401		 Charles Bruning 2401
Made in USA - Westinghouse Electric Promo
Front Scale
12.5cm // A [ B, CI, C ] D, K \\ 5in
Back Scale: [S, L, T ]
Back Blank


Note: Body same as Post 1444-P


P163 Charles Bruning 2401 Dravo		 Charles Bruning 2401 - Dravo - Simplex
Made in USA - Advertising use
Front Scale
12.5cm // A [ B, CI, C ] D, K \\ 5in
Back Scale: [S, L, T ]
Back Adv/sleeve: Dravo


P056 Charles Bruning [Unmarked 2401]		 Charles Bruning 2401 - Simplex
Made in USA - Advertising use - Body same as Post 1444P
Front Scale
12.5cm // A [ B, CI, C ] D, K \\ 5in
Back Scale: [S, L, T ]
Back Adv: J.A. MacGuire & Co.


ISRM Charles Bruning 68-540 (old 2401)		 Charles Bruning 68-540 (old 2401)
Made in USA - Note updated cursor design
Front Scale
12.5cm // A [ B, CI, C ] D, K \\ 5in
Back Scale: [S, L, T ]
Back Adv:Power Specialty Company, Houston, Texas
Retail Box
Instructions (3.7MB pdf) Copyright 1944


S108 Charles Bruning 2420		 Charles Bruning 2420 - Simplex
Made in USA
Front Scale
10inch // A [ B, CI, C ] D, K \\ 25cm
Back Scale: [S, L, T ]
Back: Conversion Table


ISRM Charles Bruning 2460 Student Slide Rule Charles Bruning 2460 Student Slide Rule
Made in USA - circa 1945
Front Scale
A [ B, CI, C ] D, K
Back Scale: [S, L, T ]
Back: Conversion Table
Original Owners: Wesley Greavu - class #149, Ziegenbalg - Class #164

The Roos Company
Charvoz-Roos

See the Aristo page for more Charvoz branded slide rules


REF Charvoz-Roos SR-31		 Charvoz-Roos SR-31 (Painted Scales on Wood Stock) c1942
Made by Lawrence - c1942 (Same as 10-B) for Charvos Roos
Material: Wood stock with printed scales
Front Scale:
A [ B, CI, C ] D, K
Back: Not Shown
Scan Donated by David Rance, The Netherlands


ISRM Charvoz-Roos PSR-101		 Charvoz-Roos PSR-101 (Wood Stock) c1940
Material: Wood stock with printed scales
Front Scale:
A [ C, CI, C ] D, K
Back Scale
Equivalents [ S, L, T ] Trig identities
Well: Fraction to decimals conversions
Donated by David Hecht, Alexandria, VA


ISRM Charvoz-Roos PSR-101D (Duplex)		 Charvoz-Roos PSR-101D Duplex 1949-1952
Material: Laminated Wood stock with printed scales
Front Scale:
A [ C, CI, C ] D, K
Back Scale
Equivalents [ S, L, T ] Trig identities


REF Charvoz-Roos Company PSR-102		 Charvoz-Roos Company PSR-102
Made in USA by Charvoz-Roos - c1946
Front Scale
A [ B, CI, C ] D, K
Back Scale: [S, L, T ]
Back: Equivalents of Units
Archive - Tom Dilatush collection


REF Charvoz-Roos Company PSR-200		 Charvoz-Roos Company PSR-200
Made in Occupied Japan by Sun Hemmi for Charvoz-Roos - c1945-1951
Front Scale
4in // A [ B, CI, C ] D || 10cm
Back Scale: [S, L, T ]
Back: Equivalents of Units
Archive - Scan provided by Cassou Olivier collection, France


REF The Roos Company SR-104		 The Roos Company SR-104
Made in USA by The Roos Company - c1941
Front Scale
A [ B, CI, C ] D, K
Back Scale: [S, L, T ]
Back: Equivalents of Units
Archive - Chris Gillings collection


REF Charvoz-Roos SR-104		 Charvoz-Roos SR-104
Made in USA Charvoz-Roos - c1941
Front Scale
A [ B, CI, C ] D, K
Back Scale: [S, L, T ]
Well: Table of Decimal equivalents
Back: Equivalents of Units
Archive - Tom Dilatush collection


S233 Charvoz-Roos SR-105		 Charvoz-Roos SR-105
Made in USA by Charvoz-Roos - c1946
Front Scale
A [ B, CI, C ] D, K
Back Scale: [S, L, T ]
Back: Equivalents of Units
Channel: Fractional to Decimal


S563 Charvoz-Roos SR-105D		 Charvoz-Roos SR-105D (Duplex style)- c1949-1952
Made in USA by Acu-Design (Acu-math) Designed by Wilfred Boos
Front Scale
A [ B, CI, C ] D, K
Back scale:
Equivalents [S, L, T ] Equivalents

Note: Unique S&T rear Hairline.


S395 Charvoz-Roos SR-105M		 Charvoz-Roos SR-105M
Made in USA - Note: same as Dietzgen 1767P (see S001)
Front Scale
A [ B, CI, C ] D, K
Back Scale: [S, L, T ]
Back: Equivalents of Units
Channel: Fractional to Decimal
Note: Metal reinforcement in well


P100 Charvoz-Roos SR-108 Duplex		 Charvoz-Roos SR-108 Duplex (Metal Ends)- c1945
Made in USA - scales set up as if it's a 10inch scale
Front Scale
K, A [ B, S, T, C ] D, DI
Back Scale
Fraction-Decimal[ L, C2, C1 ] D1, D2, D
Manual 7.56Mb


P101 Charvoz-Roos SR-108 Duplex		 Charvoz-Roos SR-108 (Plastic Ends)-c1944
Made in USA - scales set up as if it's a 10inch scale
Front Scale
K, A [ B, S, T, C ] D, DI
Back Scale
Fraction-Decimal [ L, C2, CI ] DI, D2, D
Manual 7.56Mb


S449 The Roos Company SR-109		 The Roos Company SR-109 Duplex - c1941
Made by The Roos Company prior to Charvoz-Roos merger (1946)
Material: Wood stock with plastic laminate, plastic end pieces
Front Scale (Scale similar to Post 1457)
T Cot, DF [ CF, CIF, CI, C ] D, S Cos, ST
Back Scale
Fraction-Decimal [ B, K, L, C ] Trig identities


ISRM Charvoz-Roos SR-109		 Charvoz-Roos SR-109 (Wood Stock) c1946
Material: Wood stock with plastic laminate
Front Scale (Scale similar to Post 1457)
T Cot, DF [ CF, CIF, CI, C ] D, S Cos, ST
Back Scale
Fraction-Decimal [ B, K, L, C ] Trig identities
Donated by David Hecht, Alexandria, VA


S407 Charvoz-Roos SR-109		 Charvoz-Roos SR-109 Duplex (Wood Stock)
Note: The red stain comes from the sleeve
Material: Wood stock with plastic laminate 
Front Scale (Scale similar to Post 1457)
T Cot, DF [ B, K, L, C ] D, S Cos, ST
Back Scale
Fraction-Decimal [ CF, CIF, CI, C ] Trig identities


S397 Charvoz-Roos SR-109		 Charvoz-Roos SR-109 Duplex (Metal Stock)
Made in USA (possibly with Acu-Design parts)
Note: Magnesium stock with plastic laminate - Cursor same as Acu-Math 90
Front Scale (Scale similar to Post 1457)
T Cot, DF [ B, K, L, C ] D, S Cos, ST
Back Scale
Fraction-Decimal [ CF, CIF, CI, C ] Trig identities


S369 Charvoz-Roos SR-111 Trig-O-Log		 Charvoz-Roos SR-111 Trig-O-Log
Made in USA (Henschel?)
Front Scale
LL0, LL00, A [ B, K, CI, C ] S, ST, T
Back Scale
L, LL1, DF [ CF, CIF, CI, C ] D, LL3, LL2
Original owner: Carol Van Hoozel
Warning: Clean carefully - not engine divided


REF Charvoz-Roos (SR-113) SuperTrig		 Charvoz-Roos (SR-113) SuperTrig - c1946
Made in USA  - Celluloid laminate over wood
Front Scale
LL0, LL00, A [ B, K, CI, C ] D, S, ST, T
Back Scale
L, LL1, DF [ CF, CIF, CI, C ] D, LL3, LL2
Identical to WWII era Post 1462
Archive - Tom Dilatush Collection


S344 Charvoz-Roos SR-113 SuperTrig		 Charvoz-Roos SR-113 SuperTrig - c1950
Made in USA  - All Plastic stock and slide
Front Scale
LL0, LL00, A [ B, K, CI, C ] D, S, ST, T
Back Scale
L, LL1, DF [ CF, CIF, CI, C ] D, LL3, LL2
Original owner: Joseph Ferguson, Belwood, Ontario, Canada
Warning: Do not clean this model - not engine divided


ISRM Charvoz-Roos Log-Log (Model Unknown)		 Charvoz-Roos Log-Log (Model Unknown) - c1950
Made in USA  - Plastic Laminated Wood stock
Front Scale
LL0, LL00, A [ B, K, L, C ] LL3, LL2, LL1
Back Scale
T Cot, DF [ CF, CIF, CI, C ] D, S Cos, ST
Warning: Do not clean this model - not engine divided font color=maroon>Donated by David Hecht, Alexandria, VA


P160 Charvoz (Aristo) 829 Multi-Rietz 		Charvoz (Aristo) 829 Multi-Rietz
Made in Germany - Charvoz
Front Scale
13cm, P, A [ B, T, ST, S ] D, DI, 5in
Back Scale:
K, DF [ CF, CIF, CI, C] D, L
Multiple hairlines
Adv: Charvoz
Original Location: Netherlands


ISRM Charvoz (Aristo) 870 Multilog 		Charvoz (Aristo) 870 Multilog
Made in Germany for US Brand Charvoz - date code 592 (1959)
Front Scale
LL00, K, A [ B, T Cot, ST, S Cos, C ] D, DI, LL0
Back Scale
LL01, LL02, LL03, DF [ CF, CIF, L, CI, C ] D, LL3, LL2, LL1
Multiple hairlines: HP, KW
Donated by David Hecht, Alexandria, VA


ISRM CREI Charvoz (Aristo) 0903LL Scholar
Capitol Radio Engineering Institute 		CREI Charvoz (Aristo) 0903LL Scholar
Capitol Radio Engineering Institute
Made in Germany - date code G6011 (1960)
Front Scale
L, K, A [ B, CI, C ] D, S Cos, ST ST, T Cot
Back - Slider
25cm [ S, LL2, LL3] 10in
Multiple hairlines
Donated by David Hecht, Alexandria, VA


S546 Charvoz (Aristo) 0905 Shut-Commerz (Commerce) 		Charvoz (Aristo) 0905 Shut-Commerz (Commerce)
Made in Germany - for Charvoz
Front Scale
-%/+%, KZ [ T2, P, T1 ] Z, M, £, s/d
Back Scale: 25cm [ Blank] 10 inch


S351 Charvoz (Aristo) 909 MultiTrig 		Charvoz (Aristo) 909 MultiTrig
Made in Germany
Front Scale
P, A [ B, T, ST, S ] D, DI
Back Scale
K, DF [ CF, CIF, CI, C ] D, L
Multiple hairlines: W, HP


ISRM Charvoz (Aristo) 0970 MultiLog (early) 		Charvoz (Aristo) 0970 MultiLog Date Code 593 (March 1959)
Made in Germany - note gold anodized metal ends and metal cursor
Front Scale
LL00, K, A [ B, T, ST, S, C ] D, DI, LL0
Back Scale
LL01, LL02, LL03, DF [ CF, CIF, L, CI, C ] D, LL3, LL2, LL1
Multiple hairlines: HP, KW
Contributed by Shell Thuet in 2007 (See Webpage). Professional Motorcycle race tuner. Shell Thuet was inducted in the American Motorcycle Hall of Fame in 2001. The Nomination Letter written by Mike Konshak, one of his past racers, who is also the curator of the Slide Rule Museum and also the author of Shell Thuet's Biography. Shell built and tuned winning Indian Scouts, Enfield's and Yamahas. See also his Pickett 800-ES
The following pictures (left to right) are from 1946, 1953, 1963 and 1975. Shell Thuet passed away in Victorville July 8, 2011 at age 98.


S064 Charvoz (Aristo) 0970 MultiLog (early) 		Charvoz (Aristo) 0970 MultiLog Charvoz (early)
Made in Germany for USA brand Charvoz - note silver anodized metal ends and metal cursor
Front Scale
LL00, K, A [ B, T, ST, S, C ] D, DI, LL0
Back Scale
LL01, LL02, LL03, DF [ CF, CIF, L, CI, C ] D, LL3, LL2, LL1
Multiple hairlines: HP, KW
Original Owner/Location: CCJ/USA


S065 Charvoz (Aristo) 0970 (Modern) 		Charvoz (Aristo) 0970 MultiLog (Modern)
Made in Germany for USA brand Charvoz - note plastic ends and plastic cursor
Front Scale
LL00, K, A [ B, T, ST, S, C ] D, DI, LL0
Back Scale
LL01, LL02, LL03, DF [ CF, CIF, L, CI, C ] D, LL3, LL2, LL1
Multiple hairlines: HP, KW

Climatemaker



S553 Climatemaker Heat Loss Calculating Rule
Instructions 10.9MB Worksheet 5.4MB
Climatemaker Heat Loss Calculating Rule - 1938
Made in USA by Climatemaker Corp.,
1804 WestEnd Ave, Nashville, Tennessee

Front Scale
Forced Air |stack size, Pipe Size, Pipe Area, CFM, BTU|
[ Losses 6-21, Wind, Temp Diff, single glass, Storm Windows ]
CFM No 2, Sq Ft Hot Water Rad, Sq Ft Steam Rad.
Back scale:
Gravity |3rd floor(Stack, Pipe size, Pipe Area|,
Gravity |2rd floor(Stack, Pipe size, Pipe Area|,
Gravity |1st floor(Pipe size, Pipe Area|,
[ Losses 22-40, Temp Diff, single glass, Storm Windows ]
Gravity |1st floor(Pipe Area, Pipe size|,
Gravity |2rd floor(Pipe Area, Pipe size, Stack|),
Gravity |3rd floor|Pipe Area, Pipe size,Stack|
Archive - no longer in collection

C-Thru Ruler Company

The C-Thru Ruler Company was founded in 1939 in Bloomfield, Connecticut and specialized in transparent plastic rulers and templates.
They designed a line of inexpensive (value-priced) folded sheet (film) printed plastic slide rules.
Their market continues in the modern era and have products in stores like Hobby Lobby and Michaels. Generic slide rules made by the Graphic Calculator Co, are very similar to the C-Thru designs and constructions.



C-Thru No. 27 Pocket
ISRM
Retail Card Example
Dennison No. 58076
Instructions 670Kb
 C-Thru No. 27 (Sheet Plastic Slide Rule)
Made in USA - C-Thru Ruler, Bloomfield, Connecticut
Front Scale : A [ 5in, B, CI, C, 12.5cm ] D
Back Scale : S, L, T
Well: Units Equivalants
Back Slide: Decimal Equivalents
Donated by Nancy Day, Kansas City, Missouri

William Bruce Day 		Bruce was given his first slide rule when he was in high school while his father, William M. Day, was stationed at Vandenburg AFB. Bruce later became a career military officer who flew B-52 missions in Vietnam and later C130s as a member of the reserves, retiring as a Lt. Col. Bruce obtained this slide rule after retiring from the Military. His civilian life was spent as a Patent and Trademark Attorny in Kansas City, where he still resides.


S374 C-Thru No.88		 C-Thru No.88 (Sheet Plastic Slide Rule)
Made in USA - C-Thru Ruler, Bloomfield, Connecticut
Front Scale : A [ 10in, B, CI, C, 25cm ] D, K
Back Scale : S, L, T
Well: Units Equivalants
Back Slide: Decimal Equivalents
Instructions 670Kb


REF C-Thru S-889		 C-Thru S-889
Made in Japan for C-Thru Ruler, Hartford, Connecticut
Front Scale
LL01, K, A [ B, T, ST, S ] D, L, LL1
Back Scale
LL02, LL03, DF [ CF, CIF, CI, C ] D, LL3, LL2
Archive - Rod Lovett Collection


S370 C-Thru S-890		 C-Thru S-890
Made in Japan for C-Thru Ruler, Hartford, Connecticut
Front Scale
LL01, K, A [ B, T, ST, S ] D, LL3, LL2
Back Scale
LL02, LL03, DF [ CF, CIF, CI, C ] D, LL3, LL2


C02 C-Thru S-96 Circular 6in dia		 C-Thru S-96 Circular 6in dia
Made in USA - C-Thru Ruler Company, Hartford, Conn.
Front Scale: K, D, ( C, B, A, CI, L)
Back Scale: S, L, T
Back: Instructions

Dieterich-Post Co. (DIEPO)



REF Dieterich-Post 3060P		 Dieterich-Post 3060P
Made in USA for Dieterich-Post - This looks like a Charles Bruning Model
Front Scale
10in // A [ B, CI, C ] D, K \\ 25cm
Back scale: TBD

1960 Dieterich-Post Catalog


REF Dieterich-Post 3072		 Dieterich-Post 3072
Made in USA for Dieterich-Post
Front Scale
K, DF [ CF, CIF, CI, C ] D, L
Back scale: TBD
LL0, A [ B, S, T, C ] LL3, LL2, LL1
Archive - Found on eBay

Disney



S269 Disney Mickey Mouse Slide Rule		  

Though not  logarithmic based, these Disney slide rules may have kick started many engineering and scientific careers.

Disney Mickey Mouse Slide Rule
Made in Hong Kong for Walt Disney Co.
Front Scale
Multiplication and Division
Back scale:
Addition and Subtraction


S350 Disney Mickey Mouse Disneyland		 Disney Mickey Mouse Disneyland
Made in Hong Kong for Walt Disney Co.
Front Scale
Addition and Subtraction, Fahrenheit to Celsius Conversion
Back scale:
Multiplication and Division, Inch to Centimeter conversion
Misc. Conversion Table


S269 Disney Mickey Math Slide Rule		 Disney Mickey Math Slide Rule
Made in USA for Walt Disney Co.
Front Scale
Addition and Subtraction, Fahrenheit to Celsius Conversion
Back scale:
Multiplication and Division, Inch to Centimeter conversion
Misc. Conversion Table


S534 Snoopy Slide Rule		 Snoopy Slide Rule
Made in USA for United Feature Syndicate.
Front Scale
Addition and Subtraction, Fahrenheit to Celsius Conversion
Back scale:
Multiplication and Division, Inch to Centimeter conversion
Misc. Conversion Table

Easterly (John I.) Mfg.



REF Easterly Rafter Calculator
 Easterly Rafter Calculator
Made in USA - Designed and built by John I, Easterly, Healdsburg, CA 1940
Front Scale
[Scale A Length ] Common Rafter, Hip-Valley, Scale B
Instructions
Archive - Clay Castleberry Collection


REF Easterly Rafter Calculator
 Easterly Rafter Calculator
Made in USA - Designed and built by John I, Easterly, Healdsburg, CA c1941-1954
Front Scale
[Scale A Length ] Common Rafter, Hip-Valley, Scale B
Instructions
Archive - Clay Castleberry Collection


REF Easterly Rafter Framer - Pickett 1082
Easterly Rafter Framer - Pickett 1082
Made in USA by Pickett - Designed by John I, Easterly, Watsonville, CA c1957
Front Scale
CR (Common Rafter) Hip-Valley Scale [ G ] H
Back scale
CR (Common Rafter) Hip-Valley Scale [ E ] F
Archive - Clay Castleberry Collection

Empire Pencil Co.



P151 Empire Pedigree Pocket		 Empire Pedigree Pocket
Made in USA - Empire Pencil Co., Shelbyville, NY
Front Scale
A [ B, CI, C ] D, K
Back Scale: [S, L, T ]
Note: Red scales in this instance for cost reduction, not necessarily for denoting inverted scales.


P186 Empire Pedigree Precision		 Empire Pedigree Precision
Made in USA - Empire Pencil Co., Shelbyville, NY
Front Scale
A [ B, CI, C ] D, K
Back Scale: [S, L, T ]
Instruction Sheet 1.35Mb


S157 Empire Pedigree 240		 Empire Pedigree 240 (retail package)
Made in USA - Empire Pencil Co., Shelbyville, NY
- retail package
Front Scale
A [ B, CI, C ] D, K
Back Scale: [S, L, T ]
Note: Red scales in this instance for cost reduction, not necessarily for denoting inverted scales.

Educational Instruments Inc



REF Educational Instruments Corona 1		 Educational Instruments Corona 1 - c1965
Made in USA by Educational Instruments, Inc - 9cm Diam plastic
Note: Need help with company information
Front Scale:
C, D, R (= DI), A, K, L, S, T, ST
Back:
The back, which has a window to the front disk for more surface area for equations, contains a mine of information. 112 formulae; 2 trig tables, 41 conversion factors 6 series expansions, 2 numerical integration formulae 13 numerical constants, 72 integrals, 36 differentials
Archive - Scan provided by Rod Lovette (UK) Collection

Engineering Sales Co



REF Engineering Sales Co., No. 6004		 Engineering Sales Co., No. 6004 - c1945
Made in USA for Engineering Sales by Acu-Design
Note: Red lettering faded - Brand can be seen in bright light
Front Scale (Scale similar to Post 1457, Charvoz-Roos 109)
T Cot, DF [ B, K, L, C ] D, S Cos, ST
Back Scale
Fraction-Decimal [ CF, CIF, CI, C ] Trig identities
Archive - Belongs to Jaan Raamot, Retired EE (Avia in Colorado)

Favor-Ruhl



REF Favor-Ruhl A-400 		Favor-Ruhl A-400
Made in USA by Charvos-Roos (or Acu-Rule) - c1945
Front Scale
LL0, LL00, A [ B, K, CI, C ] S Cos, ST, T Cot,
Back Scale:
L, LL1, DF [ CF, CIF, CI, C ] D, LL3, LL2
Cassou Oliver Collection - Found this in Illinois

Foxboro

The Foxboro Comapany, Foxboro, Massachussettes. USA, developed a series of slide rules to assist gas engineers in sizing control valves and in performing calculations relating to orifice meters. These devices were not widely used in gas distribution except for the design of those city gate stations using orifice meter runs to measure the flow of gas. Ref: natgasedu.com


REF Foxboro Flow And Valve Rule c1965		 Foxboro Flow And Valve Rule
Made in Japan by Hemmi.
Front Scale
Back Scale
Archive - Courtesy of Jerry Kostro, wwww.NatGasEdu.com


Foxboro Flow And Valve Rule c1970
ISRM		 Foxboro Flow And Valve Rule
Made in Japan by Hemmi. No cursor on this version.
Front Scale
Back Scale
Donated By Carlee Heit, Houston Texas, in Memory of her husband Ray Heit


Foxboro Flow And Valve Rule (c1975)
ISRM 		Foxboro Flow And Valve Rule
Made in USA - This is constructed much like a slide chart, but with a cursor like a slide rule.
Front Scale
Back Scale
Sizing control valves usually involved solving for the valve's Cv based on flow rate, flowing temperature, specific gravity, and upstream and downstream pressures. The most common orifice meter calculation involved solving for the "beta ratio" or "beta" (the ratio between the diameter of the orifice and the inside diameter of the meter run pipe, or "d/D") given the maximum flow, flowing temperature, specific gravity of the gas, static pressure and line size of the run.
Given the small size of the slide rules, these devices were intended to be more portable than precise. If more accurate answers were required, the user was referred to the companion book "Principles and Practice of Flow Meter Engineering" by L. K. Spink.
The slide rule above shows sides for both English (red or maroon) and Metric (blue) units. Donated By Carlee Heit, Houston Texas, in Memory of her husband Ray Heit

Gerber



Gerber Variable Scale
ISRM 12.06.18.01		 Gerber Variable Scale - Type TP007100B
Made in USA - Gerber Scientific Instrument Company
Scales (23.5 cm): R1, I, L10
Notes: The heart of the Variable Scale is a high precision triangular spring whose coils act as calibrating lines. When extended, all coils are equally spaced. A second spring carries numerical markings for each 10th coil of the triangular spring. More

Gisholt Machine Co.



S415 Gisholt Time Computer		 Gisholt Time Computer
Made in USA By Gisholt Machine Co., Madison, WI
This is thought by some to have been made by Richardson, but it is based on a 10-10-1920 patent, that alters from Richardson's, by having two slides.

All sheet steel construction, dual nested slides.
Front Scale
G(RPM), F(Time) [ E(Length), B(Dia) ] [ A(Cutter Dia), C(Speed-FPM) ] D(Feed)
Back: Recommended cutter diameter/RPM


REF Gisholt Time Computer		 Gisholt Time Computer
Made in USA By Gisholt Machine Co., Madison, WI
This is thought by some to have been made by Richardson, but it is based on a 10-10-1920 patent, that alters from Richardson's, by having two slides.

All sheet steel construction, dual nested slides.
Front Scale
G(RPM), F(Time) [ E(Length), B(Dia) ] [ A(Cutter Dia), C(Speed-FPM) ] D(Feed)
Back: Gisholt Machine Co. address

Gisholt Time Computer 1951
Plastic Slide chart version. Scans by Jim Cerny

Globemaster



P213 Globemaster 62200		 Globemaster 62200
Made in USA
Front Scale :A [ B, CI, C ] D, K
Back: Blank

Graphic Calculator Company

The Graphic Calculator Company was founded in 1940 in Chicago, Illinois and later in 234 James Street, Barrington IL, (847) 381-4480. They made custom slide charts as well as low cost give-away promotional slide rules (very similar to C-Thru, but with a nicer cursor). Their website was slide-charts.com, but they do not seem to be in business as of 2012.



Generic Slide Rule Version 1
 ISRM 12.09.26.59
Instructions
C-Thru Generic Slide Rule Version 1
Made in USA by Graphic Calculator Co. Chicago
Front Scale
A [6in, B, CI, C, 15.3cm] D
Well: Equivalents
Back Slide (Fil over to use): [S, L, T ]
Donated by the Huang Collection


Generic Slide Rule Version 2
 ISRM 12.09.26.60 		C-Thru Generic Slide Rule Version 2
Made in USA (by Graphic Calculator Co) for AMECO Community Television Systems
Front Scale
A [6in, B, CI, C, 15.3cm] D
Well: Equivalents
Back: Conversions: dB to microVolts, TV Channel to Frequency (megacycles)
Back adv: AMECO, Phoenix, Arizona (Community Television Systems)
Donated by the Huang Collection
The collector, who prefers to remain anonymous, obtained a B.S. degree in Physics from Taiwan's National Tsing Hua University in 1971. His love for computation has encouraged him to build a collection of slide rules, HP and TI calculators, as well as abaci, many displayed at ISRM.


P212 Concrete Volume Computer
 		Concrete Volume Computer 1995 - 8 inch long
Made in USA by Graphic Calculator Co for Louis Gerson Co, Middleboro, MA 02346
Front Scale
A(Thickness) [ B(Width), C(Length) ] D(Cubic Yards), E(Dia-Inches)
Back Scale: Estimates for cubic yard
Back adv: Lyman-Richey Sand & Gravel, Omaha, NB 68131


Gerson Bituminous Concrete Calculator
 ISRM 12.09.26.61 		Gerson Bituminous Concrete Calculator - 7 inch long
Made in USA by Graphic Calculator Co. for Gerson Co, Mattapan, Massachussettes ©1953
Front Scale
A(Length-Feet) [ B(Width-Feet), C(Thickness-Inches)] D(Weight-Tons)
Back adv: Economy Ready-Mix Concrete Co., Waukegan, Illinos
Donated by the Huang Collection


Proportional Slide Rule
 ISRM 12.09.26.62 		Proportional Slide Rule (c1950)
Made in USA by Graphic Calculator Co
Front Scale
A (Copy Dimension) [ B (Engraving Dimension), C (Dimensions larger than 12) ] D (Dimensions larger than 12)
Back adv: Warner Bros. Co. 3330 Birch St. KE6-3882 (Connecticut phone exchange?)
Donated by the Huang Collection


C23 Graphic - Percentage Calculator		 Graphic - Percentage Calculator
Made by Graphic Calculator Co., Barrington, Illinois - 1962
6in (15cm) Dia Plastic Film disc
Front Scale
Sales ( % of Sales) or Number ( Percent )
Donated by Jack Rababeh, Senior Engineer at ASC


Stock Yield Slide Rule
ISRM
Calculating Yield Example
Stock Yield Slide Rule
Made in USA by Graphic Calculator Co for Lamson Bros &Co. Fort Dodge, Iowa
Front Scale
Price [ Annual Dividend, Dollars] Percentage Yield
Back slide: Commission Rates
Donated by Nancy Day in Kansas City, Missouri

William M. Day 		William used this slide rule while working as a Credit Union Examiner for the State of Missouri. He was born on June 27, 1920 in Fort Dodge, Iowa. He volunteered for WWII than afterwards attended the State University of Iowa (now Univesity of Iowa) He majored in business and mathematics and graduated in 1949. He reurned to the Air Force and worked incommunications positions. He retired from military service as a Major in 1972. He worked an additional 10 years as a Credit Union Examiner. He lives in Kansas City, MO.


C25 Graphic - Profit Finder		 Graphic - Profit Finder
Made by Graphic Calculator Co., Chicago, Illinois - 1954
8in (20.2cm) Dia Plastic Film disc
Front Scale
# of Items, Selling Price ( Markup, Profit )
Donated by Jack Rababeh, Senior Engineer at ASC

Guedon



Guedon Metal pocket (1943)
ISRM 12.06.27.01		 Guedon Metal pocket
Made in USA Camden, NJ - all sheet metal construction
Front Scale
A [ B, CI, C ] D
Front Scale: Conversions
Back: 5in(fractions) 125mm
Donated by Scott Reynolds of Vintage Calculators, Inc, California.
In the MIT Museum, an internal letter dated January 20th, 1943 and signed A.W. Keuffel, the letter reads: "Herewith a Slide Rule known as a Vest Pocket Slide Rule made by Guedon, Camden, New Jersey. I do not think they will have much success selling this rule, because of the inherent disadvantages this metal rules has over our regular Pocket Slide Rule. Nevertheless, at the wholesale price of $.50. I do not see how they are able to make this article. After you have examined it, turn it over to Mr. Schneider for filing with the samples."
Another of these was donated by David Hecht, Alexandria, VA and ISRM, in turn,gifted this to the Smithsonian Institute in Washington, DC. upon request.


P176 Guedon - S.G.D.G. MARC		 Guedon - S.G.D.G. MARC
Made in France (Unis) for Guedon, Schenectady N.Y.
Front Scale
5in // A [ B, C ] D
Back: 13cm


P062 Guedon Plastic Pocket		 Guedon Plastic pocket - Closed simplex
Made in France for Guedon, Camden N.J.
Front Scale
A [ B, C ] D
Back: Decimal Equivalents


P153 Guedon Plastic Pocket		 Guedon Plastic pocket - with scale
Made in France for Guedon, Camden N.J.
Front Scale
5.5in // A [ B, C ] D
Back: Decimal Equivalents


P153 Guedon (Cole Electric Products)		 Guedon (Cole Electric Products)
Made in France for Guedon, Camden N.J.
Front Scale
5.5in // A [ B, C ] D
Back Scale: 15cm
Back Adv: Cole Logo, Owner: F.Latzler


P234 (Guedon) Dietzgen 1765F 		 (Guedon) Dietzgen 1765F 
Made in France for Dietzgen by Unis MARC
Front Scale
5in // A [ B, C ] D
Back Scale: 13cm [ Blank ]

Henschel

Henschel was an American company that re-branded OEM slide rules under their company name. No artifacts are known during and after WWII.


Henschel No.1096 (c1930)
ISRM 12.06.18.02		 Henschel No.1096
Made in Germany by Albert Nestler A.G.
Front Scale
10inch // A [ B, CI, C ] D, K || 25cm
Back Scale: [S, L, T ]
Back: Conversion Table


P116 Henschel 1087A (c1940)		 Henschel 1087A - Simplex -
Made in USA
Front Scale
A [ B, CI, C ] D, K
Back Scale: [S, L, T ]
Back: Conversion Table
Warning: Do not clean this model using Windex w/ Ammonia-D. This is not an engine-divided rule and the ink wipes off. (Found out too late - ouch)


S197 Henschel 2020P (c1940)		 Henschel 2020P - Duplex
Made in USA
Front Scale
LL0, LL00, A [ B, K, CI, C ] S, ST, T
Back Scale
L, LL1, DF [ CF, CIF, CI, C ] D, LL3, LL2
Warning: Do not clean this model using Windex w/ Ammonia-D. This is not an engine-divided rule and the ink wipes off. (You'd think I'd learn)

Indeco



P123 Indeco Pocket		 Indeco Pocket - Simplex
Made in USA - a clever combination of SS and plastic
Front Scale
A [ B, C ] D
Back: Blank

Kel-Co


S337 Kel-Co Class Calculator For Thoroughbred Race Horses

 

 Kel-Co Class Calculator For Thoroughbred Race Horses
Made in USA - Kel-Co Publishing Plainview, NY - 1971
Front Scale
FI (Finish Value), W(#wins) [ T (Track T1, T2, T3, T4), F2 ] [ E (Earnings) ]
Clever 2-Slide Extruded PVC construction

Walter J. Kudlaty
Listed in Slide Rule Who's Who Gallery


Kudlaty Press Tonnage Calculator 1949
ISRM 12.09.01.02		 Kudlaty Press Tonnage Calculator
Made in USA - Designed by Walter J. Kudlaty - 1949
Front Scale (BENDING)
Metal Thickness, A (Tonnage Required per Linear Ft.)[ B (Female Die Opening), Material, C (BlankingLength), Material ] Metal Thickness, D (Tonnage Required to punch hole)
Back Scale (DRAWING)
Area, E (Tonnage Required) [ F (Tonnage Required), Material, Blankholding Index, G Metal Thickness, H (Blankholding Tonnage Required)
Donated By Laurie Deiter of Louisville, Colorado, in memory of father H. McFadden
H. McFadden used this slide rule in his work as an engineer.

Lakeside


REF Lakeside Draft-A-Plan Pocket Slide Rule with kit		 Lakeside Draft-A-Plan Pocket Slide Rule with kit
Made in USA by Engineering Instruments, 1962
Front Scale
A [ B, CI, C ] D, K
Scan by ISRM
Slide Rule owned by Richard (Rick) Krol, Decona, Colorado. Draft-A-Plan was a beginning drafting kit which had a small table, T-square, 30-60 and 45 degree triangles and this slide rule. Rick used this in 5th grade (11 years old) which inspired him toward a career in engineering. He works at Sun Microsystems.

The A. Lietz Co., San FranCisco, California



ISRM Lietz 2971-N (c1950)		 Lietz 2971-N - post WWII
Made in Japan by Sun Hemmi
Front Scale (extended)
5 in // A [ B, CI, C ] D
Back Scale
[ S, L, T ]


ISRM Lietz 2971-P		 Lietz 2971-P - date code 57-11 (Nov 1957)
Made in Germany by Faber-Castell
Front Scale (extended)
11 cm, 4 in // K, A [ B, CI, C ] D, L
Back Scale
[ S, S&T, T ]
Donated by David Hecht


ISRM Lietz 2971-P U.S.A.		 Lietz 2971-P U.S.A.
Made in U.S.A. by Charles Bruning
Front Scale (extended)
12.5cm // A [ B, CI, C ] D, K \\ 5 in
Back Scale
[ S, L, T ]
Original owner: Walter Francom, 120-8th Ave, San Francisco (marked on case and name on slide rule).
Donated by Richard Davis, Las Vegas, Nevada


ISRM Lietz No.2974N		 Lietz No.2974N c1942
Made by Lawrence - c1942 (Same as 10-B) for the A. Lietz Co. San Francisco, California.
Material: Painted Scales on Wood Stock
Front Scale:
A [ B, CI, C ] D, K
Back: Not Shown
Scan Donated by David Rance, The Netherlands


REF Lietz 2974L (not a re-branded sample)		 Lietz 2974L - Same as Hemmi 40 c1937
Made in Japan by Sun Hemmi
Front Scale (extended)
A [ B, C] D,
Back Scale
[ S, S&T, T ]
Note: Scan of Actual re-branded example needed


ISRM Lietz 2975 (Mannhiem) 		Lietz 2975 (Mannhiem)
Made in England by Unique (U.S.R.C.)
Front Scale:
A [ B, CI, C ] D, K
Back Scale: [ S, L, T ]
Well:Decimal Equivalents of Fractions
Donated by Richard Davis, Las Vegas, Nevada


C06 Lietz 3625-20 8.4cm		 Lietz 3625-20 8.4cm Dia
Made in Japan - 8.4cm[ Dia
Front Scale
D ( C, CI, A, K )
Back: equivalents


Lietz 3050N		 Lietz 3050N - Duplex
Made in USA by Charvoz-Roos for Lietz - cWWII
Front Scale
K, A [ B, S, T, C ] D, DI
Back Scale
Fraction/Decimals [ L, C2, C1 ] D1, D2, D
Note: This has double length scales making it like a 10 inch slide rule


S124 Lietz 3054L		 Lietz 3054L - Duplex
Made in USA by Lietz - Pre WWII
Front Scale
K, A [ B, S, T, CI ] D, L
Back Scale
DF [ CF, CIF, C ] D
Note: Later models of the 3054L, post WWII, were made by Sun hemmi and later Relay/Ricoh

Master Electric



P124 Master Electric		 Master Electric - Simplex
Made in USA by Master Electric - Dayton, Ohio
Front Scale
5in // A [ B, C ] D
Back scale: [S, L, T ]
Back adv: Master Electric Motors
Warning: Do not clean this model using Windex w/ Ammonia-D. This is not an engine-divided rule and the ink wipes off. (Previous owner did it) Denatured Alcohal is OK.


P239 Master Electric		 Master Electric - Simplex
Made in USA by Master Electric - Dayton, Ohio
Front Scale
5in // A [ B, C ] D
Back scale: [S, L, T ]
Back adv: Master Electric Motors

Nobema Drawing Instruments



ISRM Nobema No4 Pocket Slide Rule		 Nobema No4 Pocket Slide Rule
Made in England by Unique NOBEMA Products Co., USA
A [ B, CI, C ] D, K
Back: blank
Nobema Logo


REF NOBEMA 10-B		 NOBEMA 10-B c1942
Made by Lawrence - c1942 (Same as 10-B) for NOBEMA Products Co., USA
Material: Painted Scales on Wood Stock
Front Scale:
A [ B, CI, C ] D, K
Back: Not Shown
Scan Donated by David Rance, The Netherlands

Novotni



REF -  Novotni Weight Slide Rule (Bakelite)		 Novotni Weight Slide Rule - Dual Slides
Made in USA - Novotni Slide Rule Co. - Media, PA. Ca. 1920
Material: Black Bakelite, Gold silkscreen.
Front Scale
Thickness [ Width, Length ] [ Shape, Material ] Weight (lbs)
Back: Blank
Manual recommends this "...for use in a Blacksmith shop"
Archive - ISRM has gifted this to the Math History Department of the Smithsonian Institute, Washington, DC. D.C.


S340 Novotni Weight Slide Rule (Masonite)		 Novotni Weight Slide Rule - Dual Slides
Made in USA - Novotni Slide Rule Co. - Media, PA. ca. 1959
Material: Masonite wood fiberboard, Black on white silkscreen.
Front Scale
Thickness [ Width, Length ] [ Shape, Material ] Weight (lbs)
Back: Blank
Manual changed with the times " ... for use in a Forging shop"

Prestige



P188 Prestige Precision - North American Engines		 Prestige Precision - North American Engines
Made in USA for N.A. Engines, Philadelphia, PD.
Front Scale
K, A [ B, CI, C ] D, L
Back Adv: North American Engines Co. Inc.


Slide Rule and Scale Engineering, CO. (1930-1950)
Laporte, Indiana, New Carlisle, Indiana and Mt. Olive, Illinois

Slide Rule & Scale Engineering CO. Inc - A US slide rule manufacturer was founded by George L. Lockhart in Laporte, Indiana in 1930, and later New Carlisle, Indiana. SR&SE made custom slide wood slide rules, such as the Concrete Quantity Calculator, as well as a standard Mannheim with A-B-C-D-K & L scales. Rules were manufactured using magnolia wood, finished white with an Ethyl-Cellulose base, then printed. A transparent lacquer coating was then applied to protect the printing. In 1945 a facility was built in Mt. Olive, Illinois. On February 14, 1947 the biggest fire in Mt. Olive history destroyed part of the factory. Production resumed in remaining buildings. On April 14, 1950 the company was declared bankrupt. Nicholas Muschong, a Vice president of Acu-rule, filed to do business in Illinois, and may have acquired the assets and copyrights. Similar in design and construction to Lawrence Engineering Services and Festus (Later Acu-Rule) Manufacturing. Other calculator models advertised in a 1940 flyer were Concrete Block and Mortar, Brick and Hollow Tile, Lumber, and Galvanized Sheet Steel Weight.


REF SR&SE Co - Concrete Quantity Calculator		 SR&SE - Concrete Quantity Calculator - 1940
Made in USA by SR&SE Co, Mt. Olive, IL, Designed by George L. Lockhart
Front Scale (extended)
Thickness [ Width, Length ] Cubic Yards
Back: Instructions


S556 SR&SE Co - Concrete Quantity Calculator
Full Size Flyer 7.77MB 		SR&SE - Concrete Quantity Calculator - 1940
Made in USA by Slide Rule & Scale Engineering Co., Laporte, IN
Front Scale (extended)
Thickness [ Width, Length ] Cubic Yards
Back: Instructions
back Adv: The Master Builders Company, Chicago, Illinois
Instructions 562KB


REF SR&SE Co - Concrete Quantity Calculator		 SR&SE - Concrete Quantity Calculator - c1944
Made in USA by Slide Rule & Scale Engineering Co., New Carlisle, IN
Front Scale (extended)
Thickness [ Width, Length ] Cubic Yards
Back: Instructions
back Adv: Consumers Company, Chicago, Illinois
Instructions


REF SR&SE Co - Brick And Tile Computing Slide Rule		 SR&SE - Brick And Tile Computing Slide Rule - copyright 1940
Made in USA by Slide Rule & Scale Engineering Co., New Carlisle, IN for W.H.Pipkorn.
Front Scale (extended)
A Sale (Units to Sq In.) [ B Scale (Height in Ft.), C Scale (Length in Ft.) ] D Scale (Total Number of Units)
Back: Reference Dimensions of Materials
Adv: W.H. Pipkorn Company, W. Bruce Street, Southern End of 16th Street Viaduct, Milwaukee, Wisconsin
Scan donated by David Rance, The Netherlands
Instructions

Henry W. Tomlinson



REF Henry W. Tomlinson Winslow Strength Computing 		Henry W. Tomlinson Winslow Strength Computing
Made in USA - Copyright 1904 Metal construction
Designed by Benjamin E. Winslow, Structural Engineer
Front Scale (Wood Beams):
A1, A2 [ A3, A4 ][ A5, A6 ] A7, A8
B1, B2 [ B3 B4 ][ B5, B6 ] B7, B8
Back Scale (Steel Beams):
C8, C'7, C7 [C6, C5 ][ C4, C3 ] C2, C1
D8, D'7, D7 [D6, D5 ][ D4, D3 ] D2, D1
Archive - SR and Instructions scans provided by Peter Fox, UK
Instructions (1.81MB PDF)


REF Henry W. Tomlinson Winslow Strength Computing 		Henry W. Tomlinson Winslow Strength Computing
Made in USA - Copyright 1931 Fiberboard construction
Designed by Benjamin E. Winslow, Structural Engineer
Front Scale (Wood Beams):
A1, A2 [ A3, A4 ][ A5, A6 ] A7, A8
B1, B2 [ B3 B4 ][ B5, B6 ] B7, B8
Back Scale (Steel Beams):
C8, C'7, C7 [C6, C5 ][ C4, C3 ] C2, C1
D8, D'7, D7 [D6, D5 ][ D4, D3 ] D2, D1
Arcvhive - Scan provided by Peter Fox

Tru-Bilt



S156 Tru-Bilt 79CB		 Tru-Bilt 79CB
Made in USA - retail package
Front Scale
S, K, A [ B, CI, C ] D, L, T
Back blank

U.S. Blue



S309 U.S. Blue 1876		 US Blue 1876
Made in Japan by Hemmi for U.S. Blue Co., Chicago
Front Scale
A [ B, C ] D
Back Scale
[ S, L, T ]

F. Weber & Co.



REF Weber No. 5 Special		 Weber No. 5 Special
Made in USA - Philadelphia
Front Scale
A [ B, CI, C ] D
Archive - Herman van Herwijnen Slide Rule Catalogue


S568 Weber 4280-A		 Weber 4280-A - c1930
Made in USA - Same as Post 1457, Charvoz-Roos 109
Material: Wood stock with plastic laminate
Front Scale
T Cot, DF [ CF, CIF, CI, C ] D, S Cos, ST
Back Scale
Fraction-Decimal [ B, K, L, C ] Trig identities
Original Owner: E. Ewan, 1472 S0. 303 rd., Auburn, WA (on case)


S158 Weber 4281-S Students Slide Rule		 Weber 4281-S - Students Slide Rule - c1930
Made in USA - Philadelphia
Front Scale
A [ B, CI, C ] D, K
Back Scale: [S, ref, T ]


S547 Weber 4285N 		Weber 4285N
Made in Germany by Nestler for F.Weber
Front Scale
K, A [ B, CI, C ] D, L
Back Scale: 29.5cm [S, S&T, T ] 11-5/8 inch
Multiple Hairlind Cursor
Original Owner: Rigterink (on case)


S547 Weber 4285P Scola 		Weber 4285P Scola
Made in USA by Acu-Rule for F.Weber
Front Scale
S, K, A [ B, CI, C ] D, L, T
Back Scale: Equivalents and Conversions Archive - Tom Dilatush Collection


REF Weber 4287 Pocket 		Weber 4287 Pocket
Made in Germany by A. Nestler for F.Weber
Front Scale
A [ B, C ] D
Back scale: 11cm [S, S&T, T ] 4.5in
Archive - Scan provided by Mark D. Sutton


S417 Weber 4288 Rietz		 Weber 4288 Rietz
Made in Germany by A. Nestler for Weber (similar to Nestler 23R)
Front Scale (extended)
11in // K, A [ B, CI, C ] D, L || 1:25
Back scale: [S, S&T, T ]
Well: 55cm
Back: Equivalents (English)
Multi-lined Cursor


S547 Weber 4293		 Weber 4293
Made in USA by Charvos-Roos (or Acu-Rule) - c1945
Front Scale
LL0, LL00, A [ B, K, CI, C ] S Cos, ST, T Cot,
Back Scale:
L, LL1, DF [ CF, CIF, CI, C ] D, LL3, LL2
Archive - Tom Dilatush Collection


P229 Weber 42121 N		 Weber 42121 N
Made in Germany by A. Nestler for Weber (similar to Nestler 021)
Front Scale (extended)
5in // P, K, A [ B, CI, C ] D, S, T
Back Scale
[ LL1, LL2, LL3 ]
Multi-lined cursor

Misc OEM - Promotional Rules



ISRM Honeywell Metric Conveter 		Honeywell Metric Conveter
Made in Italy (stamped on sleeve)
Front Scale
PSI to KG/cm2. LBS to KG, FT3 to M3. BTU to K-CAL
Inches to CM, Feet to Metres, US Gal to Litres, Farenheit to Centigrade
Sleeve adv: Honeywell 'First in Control', Worldwide
Donated By Zdenka Novosad, Louisville, Colorado
Zdenka used this slide rule during her career as a petroleum engineer. She attended high school and graduated with a masters degree in Czechoslovakia. She received a PhD. from the University of Pennsylvania (1975) and later became a Petroleum Engineer for Shell Canada Limited and was a member of the Society of Petroleum Engineers. One of her many papers, published in 1996 by the journal 'SPE Reservoir Engineering', was Composition and Phase Changes in Testing and Producing Retrograde Gas Wells and she wrote Spectroscopic and Magnetic Resonance Studies of Aromatic Molecules published by the Graduate School of Arts and Sciences, University of Pennsylvania, 1975.


P126 Atlas 51 		Atlas 51
Made in Japan
Front Scale
A, [ B, CI, C ] D, K
Back Scale: [ S, L, T ]
Sleeve adv: Tower Const. Co. Sioux City, Iowa


P067 Atlas-Copco Fluidics		 Atlas-Copco Fluidics - Closed simplex
Made in Sweden - Text in Spanish
Front Scale
ΔP1,  ΔP [ d, P, L  ] Q, Q1
Back Scale
[d, P1, L1 ]
Original owner: UNK/Peru


P117 Dupa 012b General Electric
 		Dupa 012b General Electric
Made in Germany by Aristo
Front Scale
F, A, [ B, CI, C ] D, E
Back Scale: Blank
Back adv: General Electric
Original Owner: R.M. Hull


P187 Fawick Airflex
 		Fawick Airflex
Made in Japan for U.S. Company
Front Scale
A, [ B, CI, C ] D, K
Back Scale: [ S, L, T ]
Back adv: Fawick Airflex Industrial Clutches and Brakes


P152 General Electric Cable Calculator
 		General Electric Cable Calculator
Made in USA
Front Scale
A, [ B, C ] D, E
Back Scale: Wire Current Capacities
Back adv: Wire Gage Working Table


P213 Globemaster 62200 		Globemaster 62200
Made in Japan for Globemaster
Front Scale
A, [ B, CI, C ] D, K
Back Scale: Blank
Sleeve adv: Globemaster 5" Plastic Slide Rule


P144 Johnston Bros		 Johnston Bros - Simplex
Made in USA - Probably by Sterling
Front Scale
A [ B, CI, C ] D, K
Back Adv: Johnston Bros, Ferrysburg, Michigan


ISRM RCA 551		 RCA 551
Made in Japan for RCA
Front Scale
K, A [ B, S, T, C ] D, DI
Back Scale
DF [ CF, CI, C ] D, L
Donated by David Hecht, Alexandria, VA


P181 RCA 551		 RCA 551 - Duplex
Made in Japan for RCA
Front Scale
K, A [ B, S, T, C ] D, DI
Back Scale
DF [ CF, CI, C ] D, L


P166 SKF [ Early Hemmi 74 Variant ]		 SKF [ Early Hemmi 74 Variant ]
Made in Japan by Hemmi for SKF Ball Bearings
Front Scale (Extended)
14cm // K, A [ B, CI, C ] D, L 
Back Scale
[ S, S&T, T ]
Back Adv: SKF


P145 Swinston - Mesta		 Swinston - Mesta
Made in Germany for Swinston, Pittsburgh, PA, USA
Front Scale [Extended]
5in // K, A [ B, C ] D
Back Scale: Blank
Back Adv: Mesta Machine Co., Pittsburgh, PA
Copyright © 2003-2012 International Slide Rule Museum