Compass card

Card for a liquid compass.

Card: A mica card attached to a domed float. The card is white with grey markings graduated to quarter points.

Needle: Two edge bar needles attached to float. Dims 3.5" x 0.5" (9 cm x 1.2 cm)

Pivot: The pivot is incorporated into the float and can be removed by a screw at the top of the dome.

The float is attached to the card by studs.

O.A. height 1.25" 93.4 cm)

Object Details

ID: ACO1050
Type: Compass card
Display location: Not on display
Creator: Unknown
Date made: 1924
Credit: National Maritime Museum, Greenwich, London, Admiralty Compass Observatory
Measurements: 109 x 34 mm