Type D

Bowl- Brass, inside painted white. Expansion chamber and filler plug fitted to base. Verge glass has wire lubber line and arrow mounted across diameter.
Card- Plastic spider, North end red, South end blue, of four legs.
Needle- Two needle magnets mounted on underside of spider.
Pivot- Steel on brass needle attached to crossbar at base of bowl.
O.A.height 2.85" (7.8cm)

Object Details

ID: ACO0414
Type: Liquid compass - aircraft compass
Display location: Not on display
Creator: Air Ministry
Date made: 1932
Credit: National Maritime Museum, Greenwich, London, Admiralty Compass Observatory
Measurements: Overall: 55 mm; Diameter: 100 mm
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