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Description: | Slide rule
Navigators dual face slide rule (N.52) Janus Series.
White plastic rule with perspex cursor.
Black leatherette case 13.75" x 3.5" (34.9 cm x 8.9 cm)
Instruction manual 15pp. 8to
On the face of the rule are four logarithmic scales A B C & D. These are divided primarily into whole numbers and subdivided into 1/10's and 1/100's as space permits. Also on the face are trigometrical scales of sines, tangents and cosines. On the reverse of the rule are scales for finding true altitude, density altitude, true air speed and for converting Farenheit to Centigrade and nautical miles to statute miles and kilometres.
AUDIT - object needs to be marked with its NAV number. One unnumbered part. Navigator's dual face slide rule (N52). | Publisher: | "http://collections.rmg.co.uk/" | Subjects: | slide rules | Source: | Royal Museums Greenwich | Identifier: | http://collections.rmg.co.uk/collections... | Go to resource |
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