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Keuffel and Esser, Specialty Scales



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This gallery displays K&E specialty slide rules with special-purpose mathematical scales. See K&E Standard Slide Rule gallery for slide rules with all-purpose scales for general engineering applications. Also see Rarities Slide Rule gallery for older or rare K&E's not shown in this gallery. For more detail, dating and related history go to the K&E Catalog Page by Clark McCoy.



K&E Short Base Triangulation Rule USArmy

ISRM 04.06.15.01

K&E Short Base Triangulation Rule US Army
Made in U.S.A. for the US Army
Front Scale: Aux Angle "A", Mils [ Vertex Angle "t" mils, base "b" ] Range "R"
Back Scale: [ Vertex Angle "t" mils, base "b" ]
Cursor: 2 hairlines Meters/Yards


K&E N4096 M 20 inch Merchants Rule

ISRM 2011.12.15.01

K&E N4096 M 20 inch Merchants Rule sn530063
Made in U.S.A.
Patents Marked: Pat. 1,934,232; Cursor: 2,086,502; Sleeve: 2,000,337
Front Scale
DF [ CF, CI, C ] D
Back Slide: Blank
Back: Equivalents Table


REF K&E M4 Graphical Firing Table Slide Rule - 1943
K&E M4 Graphical Firing Table
Made in U.S.A. for the US Army, 1943 - 18-1/4" long
Link - Clark McCoy Archive


K&E 4095-5 Mercant's Slide Rule sn55071 (1922)

ISRM 13.02.20.08
K&E 4095-5 Mercant's Slide Rule sn55071 (1922)
Made in U.S.A.
Front Scale: DF [ CF, C ] D
Back Slide: [ CI ] D
Donated in part by Martha Prince, Tucson, Arizona from the John Prince Collection.



K&E Percent Of Accuracy Estimate Slide Rule

REF
K&E Percent Of Accuracy Estimate Slide Rule (Lot 172)
Made in U.S.A. by Keuffel & Esser Co., New York - cWWIk
Front Scale
Index Mark[ 50-100-50, Estimated Range, 500-1500 ] True Range 500-1500
Back Scale: Blank
Soper Archive - Match 4638


K&E 4094 Merchant's Slide Rule

S043
K&E 4094 Merchant's Slide Rule S/N 730837
Made in U.S.A. by Keuffel & Esser Co., New York
Front Scale
Inch // DF [ CF, CI, C ] D || Cm
Back Scale: Blank


K&E 4095-1 Merchants Rule (1922)

ISRM 21,11,03.01
K&E 4095-1 Merchants Rule sn298391
Made in U.S.A. - Pat. 1,930,852, Pat. 8.17.16
Note: All-Glass Cusor
Front Scale: DF [ CF, C ] D
Back Scale: [ Index, CI ] D
Gift Of Karen Eccks of La Mesa, California.

1915 manual, 2.35MB PDF


K&E 4095-3 Merchants Rule with Time Scale (1922)

ISRM 20.06.05.01
K&E 4095-3 Merchants Rule with Time Scalesn none
Made in U.S.A. - Pat. June 5, '00, Dec. 22. '08. Cursor Pat.8,17,15
Note: All-Glass Cusor.
Note: There is a #8 on the face of the slide on the left end. Lot#?
Note: This specimen has a Time scale in 15 minute divisions.
Front Scale
DF [ CF, C ] D
Back Scale
Time Hour 16hrs, Minute 7:30 to 23:30 [ Index, CI ] D
Gift Of Matthew Grandy of New Sweden, Maine


K&E 4095-3 Merchants Rule (1922)

ISRM 18,09,17.04
K&E 4095-3 Merchants Rule sn218002
Made in U.S.A. - Pat. 1,930,852, Pat. 8.17.16
Note: All-Glass Cusor
Front Scale
DF [ CF, C ] D
Back Scale
[ Index, CI ] D
Gift Of Donald S. Bachelor collection,

1915 manual, 2.35MB PDF


K&E 4095-3 Merchants Rule with Magnifying Cursor (1922-1935)

ISRM 15.09.27.13
K&E 4095-3 Merchants Rule with Magnifying Cursorsn322686
Note: Magnifier mounted on all-glass cursor,
Made in U.S.A. - Pat. 1,930,852, Pat. 8.17.16
Front Scale
DF [ CF, C ] D
Back Scale
[ Index, CI ] D


K&E 4095-3 Merchants Rule (1936-1941)

ISRM 11.11.10.01
K&E 4095-3 Merchants Rule s/n 519731
Made in U.S.A. - Pat. 1,930,852 . Note: Improved Cursor.
Front Scale
DF [ CF, C ] D
Back Scale
[ Index, CI ] D


K&E N-4100 Stadia Slide Rule sn623559 c1936

ISRM 14.07.02.10
K&E N-4100 Stadia Slide Rule sn623559 c1936
Made in U.S.A. for Surveyor's
Front Scale: R [ H, HC, V ] A
Back Slide: [ C, B ]
Back: Instructions for horizontal distance and elevation.
Gift Of Ed Millis, dallas, Texas


K&E 4100 Stadia Slide Rule (mid 1950's)

ISRM 10.03.02.02
K&E 4100 Stadia Slide Rule
Made in U.S.A. for Surveyor's
Note: All plastic construction
Front Scale: R [ H, HC, V ] A
Back Slide: [ C, B ]
Well: Instructions for horizontal distance and elevation.
Back: Conversions
Donated by Robert C. Eaton, Boulder, Colorado


K&E 4108 Military Slide Rule (American Blueprint)

ISRM 14.09.21.04

K&E 4108 Military Slide Rule (American Blueprint) c1950
Made in U.S.A. for the US Army - 10", Similar to Short Base Triangulation SR
Front Scale: Opposite Angle Deg, Mils [ Apex Angle "t" mils, deg, CI, base C ] Range D, A
Back Slide: [ Sin, Sin Tan, Cos, C ]
Gift of Edward T. Wright of Odenton, Maryland.
Edward Wright (on left) received his B.A. with Honors in Mathematics from Rhodes College (formerly Southwestern at Memphis) in 1968, followed by his Ph.D. in Mathematics from the University of Notre Dame in 1973. Ed's thesis was on compact Kahler manifolds that admit Killing vector fields. After graduate school Dr. Wright was a visiting assistant professor at Notre Dame for one school year,then worked as an (applied) mathematician for the Department of Defense for 39 years. Ed retired 2014. Ed writes: "The only time I ever used a slide rule was in high school physics (1963/64). I started collecting them off of Ebay in the 2004/5 time period. I continue to marvel at how much was accomplished with these instruments. I am in the process of down sizing the modest collection that I have, and wanted them to go some place that will preserve this part of the technology."


REF K&E 4110 Power Trig
K&E 4110 Power Trig c1942
Made in U.S.A. - 13" Long (same stock as 4096 Merchants SR)
Front Scale: P, F, A [ B, T, Cot, S Cos, CI, C ] D
Scan donated by Clay Castleberry, California
US Patent


K&E 4128 Nordell Sewer Slide Rule (Version 2)

ISRM 21.04.02.01


K&E 4128 Nordell Sewer Slide Rule (Version 2)
Made in U.S.A. by K&E - c.1928
Front Scales:
Vel. Ft. Per Se., CU. Ft. Per SEC. [ Parts Full, L Length, H Drop in Ft, ] N (6 scales).
Back Slide: blank.
Back Advertising: Link-Belt Sewage Disposal Equipment, Philadelphia - Chicago
Belonged to George Washington Champe, Engineer, (1868-1937)
Gift Of Katherine Champe Jones of Vienna, Virginia. (Granddaughter).

Geoerge W. Champe was born in Dublin, Indiana, and was an 1893 graduate of of the University of Indiana. Soon after graduation he became the Bloomington, Indiana City Engineer. He spent one year at the Rose Polytechnic Institute and in 1900 opened his Toledo office for private engineering practice. He married Harriet May Noble (1872-?) of Indianapolois, Indiana. His arrival in Toledo coincided with a boom in the development of interurban electric railroads and he became a specialist in that field. In those years he devoted much time in pavement design and construction. He was a part time instructor in the University of Toledo engineering college,, vice chairman of the Toledo City Plan commission, chairman of the Lucas county planning commmision, and assisted the city civil service commision in the examination of applicants for engineering positions. He advised the city in its water supply and sanitation engineering problems, and was active in the development of the Transcontinental airport and in harbor projects. At the time of his death, at age 69, he was on the way home from working on a rail project in Missouri. One of his more notable projects, still standing today, is the High Blue Boy Anthony Wayne Bridge which is a high level three-span steel suspension bridge in Toledo, crossing the Maumee River. and was completed in 1931. George Champe's name can be found on the plaque commerating the bridge engineers.


REF K&E 4132_Cranes Sewer Slide Rule
K&E 4132_Cranes Sewer Slide Rule
Made in U.S.A. - c.1921
Front Scales:
Q Cu.Ft. Per Second (Egg Shaped) [ Coefficient Slope Per 1000 / Horizontal Diameter ] Acres / Slope Per 100
Back Scales:
Cu.Ft. Per Second (Circular) [ Parts Full Diameter ] Slope Per 100
Scan donated by Paul Tarantolo, Houston, Texas


S450 K&E 4133 Roy Lance Electrical
K&E 4133 Roy Lance Electrical sn 120
Made in U.S.A. - c1915 - narrow stock
Front Scale: 8in // A [ B  0-260 mid scale, C] D || B&S Gauge
Back Scale: [ S, L, T ] 20.5cm
Well(groove):Ampere Carrying capacity of wire:
1st row - Rubber coated wire
2nd row - weather proof wire
3rd row - rubber covered cable
4th row - weather covered cable
(3rd & 4th row gauge marks read hundred thousand circular mils)
Original owner: J.S.Wilson - Case marked:Aug 1915


S450 K&E N4133 Roy Lance Electrical
K&E N4133 Roy Lance Electrical sn 246401
Made in U.S.A. - c1949 - wide stock
Front Scale: 8in // A [ B  0-260 mid scale, CI, C] D || B&S Gauge
Back Scale: [ S, L, T ] 20.5cm
Well (groove): Ampere Carrying capacity of wire:
1st row - Rubber coated wire
2nd row - weather proof wire
3rd row - rubber covered cable
4th row - weather covered cable
(3rd & 4th row gauge marks read hundred thousand circular mils)
Original owner: Burnham -Plymouth, Indiana 


REF K&E 4135 (Engine) Power Computing
K&E 4135 (Engine) Power Computing - 2 Slides
Made in U.S.A. - c.1915
Front Scale: blank [ 1913 Commemerative ] A [ B, C] D
Back scales: I.H.P/B.H.P [ Strokes/Min./R.P.M. ] [ Stroke/Brake Radius M.E.P/Net Wt. ] Cyl Dia
Original Owner: J. B. Ferguson - embossed in gold leaf on case
Scan donated by Paul Tarantolo, Houston, Texas


REF K&E N4135 (Engine) Power Computing
K&E N4135 (Engine) Power Computing - Duplex
Made in U.S.A. - c.1922 (REF McCoys K&E Catalogs)
Front Scale
A [ B, CI, C] D
Back Scale:
P(IHP/BHP) [ R(Cyl Dia/Stroke/AHP), W(WT.Lever/RPM) ] D(Gas/Steam)
Archive


K&E Cooke Radio Rule - sn858377 (No Model Number)(1942-1957)

ISRM 18.09.17.02

K&E Cooke Radio Rule - sn858377 (No Model Number)
Made in U.S.A. - Produced from 1942 through 1967 by K&E,
Designed by Nelson M. Cooke, Lieut.(JG) USN Anacostia Station, Washington, D.C..,
Note, The SRT scale replaced the ST scale around 1958. In 1958-1959 the model number was changed to 68-1460 and 68-1465.
Front Scale: L, DF [ CF, CIF, CI, C ] D, 2π
Back Scale: LC, A [ B, T Cot, ST, S Cos ] D, DI
Original Owner: marking RMS No.53 on side of stock
Gift of Donald J. Bachelor Collection

Wikipedia Entry
Nelson Magor Cooke - (1903-1965) was a leader in developing electronic schools of the United States Navy, the recipient of the Navy Commendation Medal and Medal for Humane Action, a post-war engineering entrepreneur, and an author of books on applied mathematics and basic electronics. He enlisted in the U.S. Navy as an Apprentice Seaman on 22 November 1920, and progressively rose in rank through Petty Officer and Warrant Officer to Lieutenant Commander before retiring on 1 May 1951. After leaving the Navy, he formed and operated the firm Cooke Engineering. in Alexandria, VA and later San Mateo, CA. His company was acquired by Dynatech in 1968. Cooke began professional writing in 1934, and continued with multiple-edition technical books throughout his life. He developed the Cooke Radio Slide Rule (K&E model 4139) which was produced by K&E from 1942-1967.

"Cooke's Slide Rule" Response to inquiry from Nelson M Cooke Lieut.(JG) USN himself. Radio-Craft, January 1943


K&E 4139 Cooke Radio Rule (1942-1957)

ISRM 14.09.21.02

K&E 4139 Cooke Radio Rule - sn936496
Made in U.S.A. - Designed by Nelson M. Cooke, Produced from 1942 through 1967 by K&E,
Front Scale
L, DF [ CF, CIF, CI, C ] D, 2π
Back Scale
LC, A [ B, T Cot, ST, S Cos ] D, DI
Original Owner: marking RMS 659 on slide and sleeve.
Gift of Edward T. Wright


K&E 4139 Cooke Radio Rule (SRT scale) (1958-1959)

ISRM 18.04.06.41

K&E 4139 Cooke Radio Rule (SRT scale) - sn452225
Made in U.S.A. - Designed by Nelson M. Cooke, Produced from 1942 through 1967 by K&E,
Note: ST scale becomes SRT. exposed laminated edges
Front Scale
L, DF [ CF, CIF, CI, C ] D, 2π
Back Scale
LC, A [ B, T Cot, SRT, S Cos ] D, DI
Gift of Leroy Hausler Collection


K&E 4143 Kissam Stadia (for Surveyors)

ISRM 18.04.06.21

K&E 4143 Kissam Stadia (for Surveyors) sn399383
Note: Gives horizontal distance and difference in elevation.
Made in U.S.A. - 1960-1962
Front Scale: 10in // R1 [ V1, HC, V2 ] R2 || 25cm
Back: Conversion Factors
Gift of Leroy Hausler Collection


K&E 4160 Chemists Rule
ISRM 04.11.03.01
K&E 4160 Chemists Rule S/N 284743
Made in U.S.A.
Front Scale
SOUGHT [ GIVEN, CI] D (Oxide Elem.)
Back Scale
SOUGHT [ GIVEN, C] D< (Acid, Base, Salt)


REF K&E Chemical Slide Rule
K&E Chemical Slide Rule
Made in U.S.A.
Front Scale
C2S (A Scale), CaO [ S1O2, Fe2O3, SO3 ] Ca S, Ca S (B Scale)
Back Scale
Fe2O3, C4AF, AI2O3, C4AF, SO3, CaSO3
Archive - Scan by Clay Castleberry, California


REF Beatly I-Q Slide Rule
Beatly I-Q Slide Rule
Made in U.S.A. by K&E, distributed by Edward E. Babb & Co.
Front Scale: Mental Age [ Chronological Age ] Intelligence Quotient
Back: Directions
Notes: Copyrighted by Dr. Bancroft Beatley in 1922 while working on his doctorate thesis.(See Slide Rule Who's Who. The slide calculator is an unusual (certainly for K&E) single-purpose device for determining Intelligence Quotient (IQ) given a youngster's physical age and his mental age (apparently determined by a standardized test). More specifically, the rule is designed for use in calculating the IQ of young people from ages 3 to 18 with IQs ranging from 30 to 170.
Archive - Photo by Tom Wyman Collection, California as published in the Journal of the Oughtred Society JOS 2012, Vol. 21.2


REF K&E 4175 Kurtz Pyschrometric Rule


Instructions (1MB PDF)
K&E 4175 Kurtz Pyschrometric Rule
Made in U.S.A. - c.1936
Front Scale: 1, 2 [ 3, 4, 5 ] 6, 7, 8, 9, 10, 11
1 - Total Heat / Lb. Dry Air Sat
2 - Wet Bulb and Dry Bulb
3 - Dew Point and Dry Bulb
4 - Sensible Heat B.T.U./Lb. Dry Air
5 - Percent Relative Humidity
6 - Dew Point and Dry Bulb
7 - Vapor Pressure In. of Hg
8 - Lbs./Cu. Ft. Dry Air
9 - Lbs. Dry Air / Cu. Ft. Sat. Air
10 - Grains / Lb. Dry Air Sat.
11 - Grains / Cu. Ft. Sat. Air
Back: Directions for use
Scan donated by Paul Tarantolo, Housston, Texas


REF K&E Analon 68-1400 Science Analysis
K&E Analon 68-1400 Science Analysis - sn 003397
Made in U.S.A. - #397 of 597 made - c1966.
Front Scale
V2, V1/2, A [ B, U1/2, U-1, U, C ] D, V, V-1
Back: Dimensional factors
Archive - Not in Museum - Do you have one to donate for ISRM exhibits?
Instructions 2.8Mb


REF K&E National Union Radio
K&E National Union Radio
Made in U.S.A.
Front Scale
4(L or C Reactance) [ 3(Frequency), 2(Inductance)] 1(Capacitance)
Back Scale [Resonance Frequency]
Archive - Clark McCoy Collection
M74 Instructions 1.92Mb


K&E Associated Spring
Belleville Spring Washer Computer

S409
K&E Associated Spring Design - Belleville Spring Washer Computer
Made in U.S.A. by K&E for Associated Spring 1967
Front Scale
Load Flat [ OD, OD/ID (2 scales), h/t, E/1-σ2 ] Thickness
Back Scale Load Flat [ OD, OD/ID (4 scales), h/t, E/1-σ2 ] Stress
Archive - Scan donated by Jack Rababeh, engineer at Associated Spring
M145 Instructions 5.69Mb
See the Pickett page for more ASC slide rules.


K&E Brick-O-Meter
REF
K&E Brick-O-Meter
Made in U.S.A.for Mackensen C. Co., Inc., St. Louis, MO.
Scales: Q-Quantity [ M-Material H-Height ] L-Length
Scan donated by Paul Tarantolo, Houston, Texas

Click here on How to Date a K&E


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