7.9 Pocket Rules

The list below includes all linear slide rules in the collection with Length less than or equal to 6 inches, and circular slide rules with Length less than 15 inches (roughly 4.5 inch diameter).

Special cases include the Boykin Rota-Rule with its spiral scales, the segmented-scale Fowler Long Scale Calculator, and the Otis King helical scale slide rule, each of which can be classified as a pocket rule. Approximately 23% of the slide rules in the collection are pocket rules.

Maker Model Year Type Mat Length
Otis King Model L 1949 H ss 66.0
Otis King Model K 1965 H ss 66.0
Boykin RotaRule Model 510 1965 S pl 50.0
Fowler Long-Scale (RX) 1943 C ss 30.0
Gilson Midget 1919 C Al 12.0
Gilson Midget
1940 C Al 12.0
Felsenthal D-4 1944 C pl 12.0
Felsenthal Logarithmic Calculator FF-6 1951 C pl 12.0
Concise 270
1955 C pl 12.0
Pickett 101-C 1962-1964 C Al 12.0
Fearns Calculators A13
1970 C pl 12.0
Felsenthal Dial-A-Con 1968 C pl 9.0
Concise 600ST 1969 C pl 8.0
Concise 28
1970 C pl 8.0
P.A.S. Co.  Engraving Rule
1928 L ss 5.5
Jacob and Halse Sector 1809 L iv 5.0
Richardson Direct Reading Pocket
1912 L ss 5.0
Richardson Direct Reading Pocket
1912 L ss 5.0
KHH Pocket Rule 1919 L wd 5.0
Faber-Castell 379 1923 L wd 5.0
K&E 4088-1 1923 L wd 5.0
MARC promo
1930 L pl 5.0
MARC promo
1930 L pl 5.0
K&E 4097D 1944 L pl 5.0
K&E 4098A 1944 L wd 5.0
Charvoz-Roos PSR-105 1944-45 L wd 5.0
Charvoz-Roos SR-108 1945 L wd 5.0
Unique 5L/L
1945 L wd 5.0
Goodyear promo
1950 L pp 5.0
Pickett 600 1950 L Mg 5.0
Faber-Castell 67/54R 1953-1956 L wd 5.0
Pickett 20-BASIC
1955 L Al 5.0
K&E 4097C 1957 L wd 5.0
K&E 4181-1 1957 L pl 5.0
K&E 4181-1 1957 L pl 5.0
Pickett N1006-ES 1958-62 L Al 5.0
Pickett 600-ES 1959 L Al 5.0
Rietz UTO 601
1960 L pl 5.0
Rietz UTO 601
1960 L pl 5.0
Pickett N200-T Trig 1962 L Al 5.0
Pickett N600-T 1962 L Al 5.0
Pickett N600-ES
1964 L Al 5.0
Pickett N600-ES
1964 L Al 5.0
Hemmi Pocket Versalog 1965 L bb 5.0
Alco P266
1966 L ss 5.0
Pickett N3p-T 1966 L Al 5.0
K&E 68-1130 1967 L pl 5.0
Hemmi Pocket Versalog 1968 L bb 5.0
MATSKU KL-1 1969 C ss 5.0
Sterling 587
1970 L pl 5.0
noID noID
1970 L pl 5.0
Dietzgen 1771 1970-1972 L pl 5.0
Dietzgen 1776 1972 L pl 5.0
Faber-Castell 62/83 1972 L pl 5.0
Sterling 587 1972 L pl 5.0
Nestler 41 Pocket
1925 L wd 4.0
Hemmi 32 1936-43 L bb 4.0
Hemmi 32 1947-49 L bb 4.0
Hemmi 32 1957 L bb 4.0
Hemmi 30 1964 L bb 4.0
Blundell Rules Limited Radiac No. 1 1952-1956 C pl 2.0
Concise 380
1959-1966 C pl 2.0