Navigational computing instrument

Navigational computing instrument.
Metal plate with perspex volvelle.
Dia. 8.7" (22.1 cm)
Metal arm, reversable.

Object Details

ID: NAV0132
Type: Navigational computing instrument
Display location: Not on display
Creator: Unknown
Date made: circa 1940
Credit: National Maritime Museum, Greenwich, London
Measurements: Overall: 2 x 229 x 310 mm
Parts: Navigational computing instrument
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