Metal position slide rule

Slide rule

Metal position line slide rule
Diam. 2.8" (7.1 cm)
For calculating altitude.
Cylindrical and three tubes.
Log cotangent and log cosine scales.
In metal case

Object Details

ID: NAV0197
Type: Slide rule
Display location: Not on display
Creator: Dennert & Pape
Date made: circa 1939
Credit: National Maritime Museum, Greenwich, London
Measurements: Overall: 292 mm; Diameter: 71 mm
Parts: Metal position slide rule
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