Compass card

Card for a liquid compass.

Card: A one inch band of mica is supported by a wire framework attached to the dome. The card is mica, brown with black markings graduated to quarter points and quadrantally in degrees.

Needle: The two needles are enclosed in tubes which are attached to the domed float.
Length 2.9" (7.3 cm)

Pivot: The pivot is incorporated into the domed float and the jewel can be changed by a screw on the top of the float.

Object Details

ID: ACO1080
Type: Compass card
Display location: Not on display
Creator: Henry Hughes & Son Limited
Date made: 1940
Credit: National Maritime Museum, Greenwich, London, Admiralty Compass Observatory