Magnetic corrector box - aircraft compass

Magnetic corrector box
Brass containing a horizontally mounted magnet which is turned by level gearing inside box, with the aid of a special key. This example is stripped of its top and bottom to show mechanism.

Object Details

ID: ACO0376
Type: Magnetic corrector box - aircraft compass
Display location: Not on display
Creator: Unknown
Date made: 1931
Credit: National Maritime Museum, Greenwich, London, Admiralty Compass Observatory
Measurements: Overall: 58 mm x 84 mm x 82 mm
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