Slide Rules

Slide Rule Collection

Mike Syphers

See the Full Collection:

Following The Rules


Quick References:

Oughtred Society

     -- Beginner's Guide

     -- All About Slide Rules

"When Slide Rules Ruled" 

       by Clifford Stall

10" Hemmi/Post 1447  and  20" K&E N4053-5 slide rules

Sample Rules from the collection...

Keuffel and Esser, USA

Model 4041, c. 1900

4013  Thacher's Calculating Instrument,  1907

4083   16-inch Rule, c. 1916

4058 Student's Rule:  Front

                 c. 1916-1925

                               Back

Model 4094 -- Merchant's Rule

           1937

4139 Cooke Radio Slide Rule

                 1943

N4096 Merchant's Rule, 20" desk model, 1950

    Model 4181-1

1954        

68-1130 Deci-Lon 5

              1967

68-1100 Deci-Lon 10

              1969

Pickett, USA

Deci-Point (Model 1), c. 1945-46

Model 2, c. 1946-47

Model 3-T, c. 1953

Model 4-ES, c. 1958

Model 500-T  Ortho-Phase Log Log, c. 1964-75

Model 1010-T TRIG, c. 1964

Electronic Model N-515-T, c. 1962-65

Model N600-T Log Log Speed Rule, 1962

Model N600-ES Log Log Speed Rule, 1964

Sun-Hemmi, Japan

 (and Post, USA; Hughes-Owens, Canada; etc.)

Model 80/3 Electro, c. 1935

Model 40:  for US Blue Co. -- Model 1876, c. 1930

Frederick Post Co., Model 1442 --  WW-II production

  made by Charvoz-Roos, model SR-108, 1945

Model 153 Electrical Engineers Universal Duplex, 1955

Model 257 Chemical Engineer, 1956

Model 258:  for Frederick Post, Co. -- Model 1460 , 1951

         First-Year VERSALOG (1951)

Model 258:  for Post-Teledyne -- Model 44CA-600 , 1972

         VERSALOG II 

for Frederick Post, Co. -- Model 1461 

         5-inch pocket VERSALOG (1968)

Dietzgen, USA

Model 1761-AL, 8" scales,  1910-12

Model 1767 National, c. 1965

Model 1734 Microglide Decimal Trig Type Log Log, c. 1963

Model N1725 Microglide Vector Type Log Log, 1967

1797-M, Midget, c. 1940

   made by Gilson for Dietzgen

A.W. Faber &  Faber-Castell, Germany

Faber 365, c. 1898

Faber 367, c. 1900

Faber-Castell 363, c. 1912

Faber-Castell 387, 1935

Faber-Castell 1/87m, 1947

Castell 67/54R,  c. 1953-56 --                         Front :

                         --                Back :

Faber-Castell 2/82, 1957

Faber-Castell 1/54, 1960

Faber-Castell 2/83N, 1970

Faber-Castell 62/83, 1973

Lawrence / Engineering Instruments, USA

Model 8-B,  1935-1938

Model 10-B, c. 1942

Model 10-D, Lumber Calculator, c. 1946

Model 250-BT, c. 1960

Model 250-V, c. 1960

Sterling, USA

Model 684, c. 1968

Model 594, 1972

Others

Routledge Engineer - Bolton, c. 1825

Sector, Jacob & Halse, 1809

Comparative Rule, c. 1880

Engraving Proportion Rule, c. 1928

Harrow Mark Reducer, made by Educational Supply Association., London, c. 1899

Dring & Fage Excise Tax Slide Rule, c. 1885

Fuller’s Calculator Model No. 1, 1909

Fowler & Co, Long Scale, 1943

Richardson's Direct Reading, c. 1911

Government-issued Acu-Math 1300, c. 1975

Printer's Proportions Rule, c. 1960

Takeda No. 28

c. 1970

Otis King Model L

c. 1950

Goodyear Promo

c. 1950

Gilson Midget 

99 mm Type II1919

Staedtler Mars 54408, 1964

Blundell Rules Ltd,  Radiac No. 1, radiation exposure calculator, 1952-1956

Aristo Model 970 MultiLog, 1954

Albert Nestler No. 23R, c. 1930

4-in. Nestler Pocket Mannheim, c. 1925

           Alco, c. 1966 -- Front

                                          -- Back

Gilson Binary, 1941

Boykin RotaRule Model 510,  1965

Gilson Atlas Calculator, 1931

Felsenthal Altitude Correction Computer, 1943

Aristo No. 0968, 1963

Relay-Recoh, for Lafayette Electronics, Model F-686, 1961

H-H Universum, c. 1935-1942

Albert Nestler No. 24, c. 1930