Liquid compass card - aircraft

Liquid compass Card
White painted mical with black markings, graduated to 1/2 points and to 360 degs. Mounted on black painted float, whcih incorporates two 3.25" (8.2cm) neeedles. Centre of float coned to take pivot, top of cone fitted with jewelled pivot cup.

Object Details

ID: ACO0227
Type: Liquid compass card - aircraft
Display location: Not on display
Creator: Captain Chetwynd; Kelvin Bottomley & Baird Ltd
Date made: 1914
Credit: National Maritime Museum, Greenwich, London, Admiralty Compass Observatory
Measurements: Overall: 45 mm; Diameter: 142 mm