Magnet holder - aircraft compass

Black plastic corrector box. Containing two independent pairs of magnets operated by bevel gearing inside box and rotated by square-headed key.

Object Details

ID: ACO1164
Type: Magnet holder - aircraft compass
Display location: Not on display
Creator: Air Ministry
Date made: 1940
Credit: National Maritime Museum, Greenwich, London, Admiralty Compass Observatory
Measurements: Overall: 40 mm x 62 mm x 62 mm