Liquid compass; Azimuth circle

Azimuth circle of unusual type is fitted in whcih bearings are taken at right angles to line of sight through an aperture on prism frame. Two prisms are fitted, one for sighting object and partly for reflecting the line of sight through the second prism to edge of card. One coloured shade is fitted.

Object Details

ID: ACO0470.1
Type: Liquid compass; Azimuth circle
Display location: Not on display
Creator: E. S. Ritchie & Sons
Date made: 1880
Credit: National Maritime Museum, Greenwich, London, Admiralty Compass Observatory
Measurements: Overall: 96 mm x 238 mm x 242 mm
Parts: Liquid compass
  • Liquid compass; Azimuth circle (ACO0470.1)