Astronomical Reckoner

Circular instrument of black and grey painted metal with black plastic fittings, with perspex disc 4.9" (12.5cm) diameter at centre. Two prismatic eyepieces are attached to a jointed arm which is mounted on edge of instrument. Supplied with a black silk cover and electric lead and plug.
In grey painted wooden box 9.8 x 9.8 x8.25" (25 x 25 x21cm).

Object Details

ID: ACO1275
Type: Astronomical Reckoner
Display location: Not on display
Creator: Unknown
Date made: circa 1940
Credit: National Maritime Museum, Greenwich, London, Admiralty Compass Observatory
Measurements: Overall: 180 mm; Diameter: 220 mm
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