Liquid compass

Card-Mica, painted black with white markings, graduated to 1/4 points and quadrantally in degrees. Attached to a black painted float at centre by a light wire framework.
Needle- Four needles of a circular section 2 x 3.5"(8.9cm) & 2 x 2.6" (6.7cm) long, attached to underside of float by a light wire framework.
Pivot-A cone-shaped pivot cup with jewel at top, carried in centre of float.

Object Details

ID: ACO0906
Type: Liquid compass
Display location: Not on display
Creator: Unknown
Date made: 1945
Credit: National Maritime Museum, Greenwich, London, Admiralty Compass Observatory
Measurements: Overall: 50 mm; Diameter: 175 mm