Astronomical reckoner

Astronomical reckoner. Bowl shaped instrument of black painted metal and glass. Two eyepieces. Lead and plug.
In wooden box. 9.8" x 9.8" x 8.2" (24.9 cm x 24.9 cm x 20.8 cm)

Query picture.

Object Details

ID: NAV0131
Type: Astronomical reckoner
Display location: Not on display
Creator: Argi
Date made: circa 1940
Credit: National Maritime Museum, Greenwich, London
Measurements: Overall: 180 mm; Diameter: 215 mm