6.4 Significant Rules
This list contains those rules that I feel are the more significant rules of the collection and have become some of my favorites, either because of their age, their historical significance, their complexity, their condition, or combinations of these qualities.
| Maker | Model | Year | Type | Mat | L0 | Lx | |
|---|---|---|---|---|---|---|---|
| Jacob and Halse | Sector | 1809 | L | iv | 5.0 | 12.0 | |
| Gill | Comparative Rule | 1816-1824 | L | wd | 9.0 | 9.0 | |
| Gill | Proof Rule | 1816-1824 | L | wd | 9.0 | 9.0 | |
| noID | Gunter Rule |
|
1820 | L | wd | 12.0 | 24.0 |
| Davies | Routledge Engineer |
|
1840 | L | wd | 11.0 | 12.0 |
| Palmer | Palmer’s Computing Scale | 1843 | C | pp | 27.0 | 11.0 | |
| Palmer | Palmer’s Pocket Scale | 1845 | C | pp | 10.0 | 3.0 | |
| Dring and Fage | Excise Officers Rule | 1845-1849 | L | wd | 8.0 | 10.0 | |
| Stanley | No. 15 |
|
1858 | L | wd | 11.0 | 12.0 |
| noID | Comparative Rule |
|
1880 | L | wd | 9.0 | 9.0 |
| Dring and Fage | Inland Revenue Rule | 1883-1902 | L | wd | 12.0 | 24.0 | |
| Faber | 360 | 1897 | L | wd | 10.0 | 10.0 | |
| K&E | American/Favorite |
|
1898 | L | wd | 10.0 | 10.0 |
| E.S.A. London | Harrow Mark Reducer | 1898-1925 | L | wd | 11.0 | 36.0 | |
| K&E | American |
|
1900 | L | wd | 10.0 | 10.0 |
| Dietzgen | MultiplexProto | 1905-1907 | L | wd | 10.0 | 10.0 | |
| K&E | 4013 Thacher | 1907 | L | wd | 360.0 | 18.0 | |
| Stanley London | Fuller’s Calculator Model No. 1 | 1909 | H | wd | 500.0 | 12.0 | |
| K&E | 4053-2 | 1910-1914 | L | wd | 8.0 | 8.0 | |
| K&E | 4092 | 1913 | L | wd | 10.0 | 10.0 | |
| K&E | 4133 | 1913-1922 | L | wd | 8.0 | 8.0 | |
| K&E | 4100 | 1915-1922 | L | wd | 10.0 | 10.0 | |
| K&E | 4083 |
|
1916 | L | wd | 16.0 | 16.0 |
| Richardson | Model of 1917 | 1917-1918 | L | wd | 17.0 | 18.0 | |
| Gilson | Midget | 1919 | C | Al | 12.0 | 4.0 | |
| Nestler | 1a |
|
1920 | L | wd | 10.0 | 10.0 |
| K&E | 4035 | 1922 | L | wd | 8.0 | 8.0 | |
| K&E | 4092-3 | 1923 | L | wd | 10.0 | 10.0 | |
| K&E | 4092-5 | 1923 | L | wd | 20.0 | 20.0 | |
| KHH | Mannheim Multiphase Adjustable | 1924 | L | wd | 10.0 | 10.0 | |
| Nestler | 33 Chemiker | 1924-1933 | L | wd | 10.0 | 10.0 | |
| Nestler | 41 Pocket |
|
1925 | L | wd | 4.0 | 4.0 |
| KHH | Mannheim Multiphase Adjustable |
|
1925-1930 | L | wd | 10.0 | 10.0 |
| K&E | N4053-3F | 1928 | L | wd | 10.0 | 10.0 | |
| K&E | Mystery2 | 1929 | L | wd | 10.0 | 10.0 | |
| K&E | 4093-3 | 1930 | L | wd | 10.0 | 10.0 | |
| Nestler | 24 |
|
1930 | L | wd | 20.0 | 20.0 |
| Gilson | Atlas |
|
1931 | S | Al | 468.0 | 8.0 |
| K&E | 4093-3 | 1933 | L | wd | 10.0 | 10.0 | |
| K&E | Mystery | 1933 | L | wd | 10.0 | 10.0 | |
| K&E | Mystery | 1933 | L | wd | 10.0 | 10.0 | |
| K&E | Mystery | 1934 | L | wd | 10.0 | 10.0 | |
| K&E | N4096 | 1935 | L | wd | 20.0 | 20.0 | |
| K&E | N4092-5 | 1936 | L | wd | 20.0 | 20.0 | |
| Hemmi | 153 | 1936-1940 | L | wd | 10.0 | 10.0 | |
| K&E | 4081-3 | 1937 | L | wd | 10.0 | 10.0 | |
| UIF Shanghai | 4083-3 | 1939-1947 | L | wd | 10.0 | 10.0 | |
| Gilson | Midget |
|
1940 | C | Al | 12.0 | 4.0 |
| K&E | 4110 | 1940 | L | wd | 6.5 | 15.0 | |
| Baetzmann | Spring Calculator | 1941 | L | wd | 2.0 | 17.0 | |
| Fowler | Long-Scale (RX) | 1943 | C | ss | 30.0 | 3.0 | |
| K&E | N4133 | 1944 | L | wd | 8.0 | 8.0 | |
| HH | Universum | 1945-1955 | L | wd | 7.5 | 7.5 | |
| Pickett | 1 | 1945-46 | L | Mg | 10.0 | 10.0 | |
| American Blueprint | Military | 1948-1957 | L | wd | 10.0 | 12.0 | |
| Otis King | Model L | 1949 | H | ss | 66.0 | 6.0 | |
| Pickett | 600 | 1950 | L | Mg | 5.0 | 5.0 | |
| Felsenthal | FAA-95 | 1950-1955 | C | pl | 16.0 | 8.0 | |
| Hemmi | 258 | 1951 | L | bb | 10.0 | 10.0 | |
| K&E | 4094 | 1951 | L | wd | 10.0 | 10.0 | |
| Richardson | GE Analizer |
|
1951 | L | wd | 4.0 | 18.0 |
| Hemmi | 255 | 1952 | L | bb | 10.0 | 10.0 | |
| Hemmi | 258 | 1952 | L | bb | 10.0 | 10.0 | |
| Pickett | 1025 | 1952-1956 | L | Al | 10.0 | 10.0 | |
| Hemmi | 258 | 1953 | L | bb | 10.0 | 10.0 | |
| K&E | 4081-3 | 1955 | L | wd | 10.0 | 10.0 | |
| Hemmi | 257 | 1956 | L | bb | 10.0 | 10.0 | |
| K&E | 4081-5 | 1956 | L | wd | 20.0 | 20.0 | |
| Faber-Castell | 2/82 | 1957 | L | pl | 10.0 | 10.0 | |
| Hemmi | 258 | 1957 | L | bb | 10.0 | 10.0 | |
| Blundell Rules Limited | Pilot Balloon Slide Rule Mark IV-A | 1957-1964 | L | pl | 7.5 | 24.5 | |
| Hemmi | 258 | 1958 | L | bb | 10.0 | 10.0 | |
| Pickett | 4-ES | 1958 | L | Al | 10.0 | 10.0 | |
| Pickett | N-515-T | 1958-62 | L | Al | 10.0 | 10.0 | |
| Pickett | N-515-T | 1958-62 | L | Al | 10.0 | 10.0 | |
| Pickett | N4-ES | 1959 | L | Al | 10.0 | 10.0 | |
| Pickett | N4-T | 1959-1962 | L | Al | 10.0 | 10.0 | |
| Concise | 380 |
|
1959-1966 | C | pl | 2.0 | 4.0 |
| Aristo | 1067U | 1961 | L | pl | 20.0 | 20.0 | |
| Dietzgen | 1734 |
|
1963 | L | wd | 10.0 | 10.0 |
| Hemmi | 258 | 1963 | L | bb | 10.0 | 10.0 | |
| Pickett | N600-ES |
|
1964 | L | Al | 5.0 | 5.0 |
| Pickett | N600-ES |
|
1964 | L | Al | 5.0 | 5.0 |
| Pickett | N4-ES | 1964-1975 | L | Al | 10.0 | 10.0 | |
| Boykin | RotaRule Model 510 | 1965 | S | pl | 50.0 | 6.0 | |
| Hemmi | Pocket Versalog | 1965 | L | bb | 5.0 | 5.0 | |
| Otis King | Model K | 1965 | H | ss | 66.0 | 6.0 | |
| Aristo | 969 | 1966 | L | pl | 10.0 | 10.0 | |
| Pickett | N3p-T | 1966 | L | Al | 5.0 | 5.0 | |
| Hemmi | 258 | 1967 | L | bb | 10.0 | 10.0 | |
| K&E | 68-1130 | 1967 | L | pl | 5.0 | 5.0 | |
| K&E | 68-1130 | 1967 | L | pl | 5.0 | 5.0 | |
| Thornton | P221 |
|
1967 | L | pl | 10.0 | 10.0 |
| Hemmi | Pocket Versalog | 1968 | L | bb | 5.0 | 5.0 | |
| Hemmi | 258 | 1969 | L | bb | 10.0 | 10.0 | |
| K&E | 68-1100 | 1969 | L | pl | 10.0 | 10.0 | |
| Aristo | 958 | 1970 | L | pl | 10.0 | 10.0 | |
| Faber-Castell | 2/83N | 1970 | L | pl | 10.0 | 10.0 | |
| Hemmi | 258 | 1971 | L | bb | 10.0 | 10.0 | |
| Hemmi | Pocket Versalog II | 1971 | L | bb | 5.0 | 5.0 | |
| Dietzgen | 1776 | 1972 | L | pl | 5.0 | 5.0 | |
| Faber-Castell | 62/83 | 1972 | L | pl | 5.0 | 5.0 | |
| Hemmi | 258 | 1972 | L | bb | 10.0 | 10.0 | |
| Pickett | X-3 |
|
1975 | L | Al | 10.0 | 10.0 |