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Cylindrical slide rule
A Position line slide rule in black painted metal cylindrical casing with black plastic fittings and paper scales. There are four scales for calculating altitude, log, co-tangents, and log cosines. In fitted white-wood box 12.6 x 4.2 x 3.6" (32 x10.5 x 9cm).
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Object Details
| ID: | ACO1277 |
|---|---|
| Type: | Cylindrical slide rule |
| Display location: | Not on display |
| Creator: | Unknown |
| Date made: | circa 1940 |
| Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory |
| Measurements: | Overall: 290 mm; 286 mm; Diameter: 64 mm |