5.20 Other Rules
To create one of our previous lists a total of at least three rules of a given manufacturer had to be in the collection. The remainder of the rules are grouped into the “Others” category here, although this tends to contain many of the more significant rules.
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Harrow Mark Reducer, E.S.A., London |
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Routledge Engineer | Fuller’s Calculator Model 1 | |
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Boykin RotaRule 510 | Fowler & Co. Long Scale RX | |
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Jacob and Halse Sector | Goodyear Promotional | |
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Fearns Calculators A13, UK | Matsku KL-1 (back), USSR | |
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Factory 10 YCP-12, USSR | Unique Navigational | |
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Alco P255 (front) | Alco P255 (back) | |
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Reiss 3223 (front) | Reiss 3223 (back) | |
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Staedtler 54408 | H-H Universum | |

Palmer’s Computing Scale
Total number of Other slide rules in the collection: 44.
Maker | Model | Year | Type | Mat | L0 | Country | Note | |
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Jacob and Halse | Sector | 1809 | L | iv | 5.0 | UK | beautiful but warn; J&H in business 1809-1810; note from owner dated 1861; 6in when folded, log scale is an A of 9.75in | |
Gill | Comparative Rule | 1816-1824 | L | wd | 9.0 | UK | Comparative Rule, part of a Sikes Hydrometer set made by Thomas Gill, London (in business 1806-1824) | |
Gill | Proof Rule | 1816-1824 | L | wd | 9.0 | UK | Proof Rule, part of a Sikes Hydrometer set made by Thomas Gill, London (in business 1806-1824) | |
Davies | Routledge Engineer |
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1840 | L | wd | 11.0 | UK | Maker is T. Davies, Gravel Lane, Southwark; references to pre-imperial units |
Palmer | Palmer’s Computing Scale | 1843 | C | pp | 27.0 | USA | First Issue of Palmer’s scale; first logarithmic calculating scale designed, manufactured, and sold in USA; original finger button for turning the disc | |
Palmer | Palmer’s Pocket Scale | 1845 | C | pp | 10.0 | USA | Pocket-sized book, 48 pages, with small Palmer Scale on inside back cover; companion to Palmer’s Computing Scale; weathered and worn | |
Dring and Fage | Excise Officers Rule | 1845-1849 | L | wd | 8.0 | UK | double slide; Tooley St. (19 & 20) London address; boxwood; brass pins at gauge marks; no Inland Revenue mark | |
Stanley | No. 15 |
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1858 | L | wd | 11.0 | USA |
Early American 2-foot 2-fold carpenter’s rule; Stanley Rule Level Co. No. 15; New Britain, Conn. (no USA ); Warranted Boxwood; brass slide
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Dring and Fage | Inland Revenue Rule | 1883-1902 | L | wd | 12.0 | UK | Marked with address 145 Strand, London; used for alcohol excise tax purposes; 24 inch total length | |
E.S.A. London | Harrow Mark Reducer | 1898-1925 | L | wd | 11.0 | UK | Educational Supply Association, incorp. 1898; rule was designed in 1875 by W.D. Bushell for the Harrow School, England, to reduce and calculate examination scores; 2 decades on stock, 3 decades on slide, 36 inch total length | |
Stanley London | Fuller’s Calculator Model No. 1 | 1909 | H | wd | 500.0 | UK | Original mahogany box, with original instruction manual; nice condition; no hole in handle; from bank in New Jersey | |
P.A.S. Co. | Engraving Rule |
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1928 | L | ss | 5.5 | USA | Engraving Proportion Scale; sold by Art Brown & Bro. Inc. NewYork; similar to Hyde Optical Slide Rule at ISRM |
MARC | promo |
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1930 | L | pl | 5.0 | FRA | Made in France; blank promo type; Kathy from FindGreatStuff (Medford, NJ): This rule belonged to my Dad who worked as an engineer for RCA Camden from the 30s through their demise. All the best… |
MARC | promo |
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1930 | L | pl | 5.0 | FRA | UNIS 1919; S.G.D.G. MARC __ PARIS; Engraved inside Chicago Pneumatic Tool Company |
Novotni | Weight Calculator |
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1935 | L | pl | 4.0 | USA | Novotni, but not marked as such; 13 inch o/a length; By-Products Steel Corporation; Commercial Trust Building, Philadelphia, Pa. |
UIF Shanghai | 4083-3 | 1939-1947 | L | wd | 10.0 | CHN | Chinese-made copy of K&E 4083-3 Vector Rule; paper (copy of K&E layout) on wood; no cursor; exact same rule presented by Clay Castleberry in JOS paper 15.1p36 (see refs.) | |
Sandish | Spring Calculator |
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1940 | L | wd | 4.0 | USA | apparent home-made dual-slide spring calculation slide rule; traced by F. Sandish; original owner M.L. Rowe |
Baetzmann | Spring Calculator | 1941 | L | wd | 2.0 | USA | Spring Load Calculations slide rule; large format 17 in x 2.5 in x 0.75 in; two slides on front, one on back; owner (maker?) R. K. Baetzmann, 1941 | |
Sillcocks-Miller | M1 Slide Rule No. 547 | 1942 | C | pl | 31.0 | USA | Military ballistic slide rule; angles in mils (800 mils = 45 deg); designed by Robert Crichlow | |
Fowler | Long-Scale (RX) | 1943 | C | ss | 30.0 | UK | very nice specimen; nickel-plated felt-lined box | |
Unique | Navigational | 1943 | L | wd | 10.0 | UK | Original box from London; Lt. Filipek (1943) ~WWII | |
Unique | 5L/L |
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1945 | L | wd | 5.0 | UK | Log Log, no CI scale; stock v. D; cursor v. iii |
HH | Universum | 1945-1955 | L | wd | 7.5 | GER | HH Universum rule; green felt-line hinged case with clasp; 3-hairline cursor; great condition; original instruction sheet | |
American Blueprint | Military | 1948-1957 | L | wd | 10.0 | USA | US Military slide rule, for field artillery problems | |
Otis King | Model L | 1949 | H | ss | 66.0 | UK | Type B/C, rare; original box, instructions (8 pg, folded) | |
Goodyear | promo |
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1950 | L | pp | 5.0 | USA | original paper case |
J.B. Carroll | Associated Spring M110 | 1952 | L | pl | 10.0 | USA | early version, made for Associated Spring; no cursor | |
Kahl Scientific | Culbertson Slide Rule | 1955 | C | pl | 24.0 | USA | Temperature, Depth, Salinity calcs; Designed by Margaret Culbertson for the U.S. Navy Electronics Lab; full instructions | |
Factory10 | YCP-12 | 1957 | L | wd | 10.0 | USSR | nice condition; made in year of Sputnik (and my birth year!); Kiev | |
Unique | Universal I | 1959 | L | wd | 10.0 | UK | Log Log, CI scale; stock v. D; cursor v. vi; stamped U.1 and dated 19 Mar 1959 on box; instructions | |
Rietz | UTO 601 |
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1960 | L | pl | 5.0 | DEN | promo-Acme Industries, Jackson, MI; very good condition |
Rietz | UTO 601 |
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1960 | L | pl | 5.0 | DEN | promo-Joslyn Service (on rule + case) |
Graphic Calculator | Percentage Calculator | 1962 | C | pl | 5.0 | USA | Circular Proportions Rule, made in nearby Barrington, IL | |
Staedtler | 54408 | 1964 | L | pl | 10.0 | GER | Staedtler Mars, made my Nestler?; very clean, great condition; 5-hairline cursor | |
Boykin | RotaRule Model 510 | 1965 | S | pl | 50.0 | USA | Original box, case, instruction book, ads – all the papers; 1 of only about 200 produced | |
Otis King | Model K | 1965 | H | ss | 66.0 | UK | Type C; leather case + original box, instructions (8 pg, folded) | |
Alco | P266 |
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1966 | L | ss | 5.0 | JPN | Made in Japan; all metal; addiator/slide rule combo |
Ruyi | 1002 | 1966 | L | pl | 10.0 | CHN | Vector rule, 28 scales, nice condition | |
MATSKU | KL-1 | 1969 | C | ss | 5.0 | USSR | box; directions | |
C-Thru | PS-79 |
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1970 | C | pl | 16.0 | USA | Proportional Scale, from the estate of Johnny Craig, noted comic book artist |
Fearns Calculators | A13 |
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1970 | C | pl | 12.0 | UK | Log-Log is single helical 3-turn scale; made for Industrial Scientific Instruments, Montreal; conversion factors on back |
USSR Military | Slide Rule RL | 1970 | C | pl | 2.0 | USSR | Translations: Slide Rule RL, GIVING AN ASSESSMENT OF THE RADIATION ENVIRONMENTS DURING GROUND EXPLOSIONS, For Official Use, Ex. No. D10342; Instruction booklet in Russian: Order of the Red Banner of Labor, Military Publishing House, Defense Ministries CCCP, Moscow – 1970; green plastic carrying case; gift from Brian Eddy (thanks!) | |
Reiss | 3223 Progress | 1971 | L | Al | 10.0 | EGER | very nice rule; made in E.Germany; 771 on stock = July 1971; multi-line cursor; case has been taped together | |
C-Thru | S-96 |
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1973 | C | pl | 15.0 | USA | from my high school years |