Boat's Liquid Compass

Bowl-Grey painted brass, filler plug at side, expansion chamber at base. Inside of bowl painted white with four black lubber lines on side. Mounted in grey painted gimbal ring 6.25" (15.9cm) dia.
Card-Dia. 4" (10.2cm) Annular mica painted white, with black markings graduated to 1/4 points. Attached by two magnets to pivot at centre.
Needle-Two flat bar needles of circular section 3" (7.6cm) long, attached to underside of card and which have the pivot cap attached at their centre.
Pivot-Unsighted but jewelled pivot cap is mounted at centre of card of the two magnets.

Object Details

ID: ACO1210
Type: Boat's Liquid Compass
Display location: Not on display
Creator: Baker Compass Co.
Date made: circa 1942
Credit: National Maritime Museum, Greenwich, London, Admiralty Compass Observatory
Measurements: Overall: 170 mm x 200 mm x 200 mm