Earth inductor compass

Base-Unpainted aluminium plate, a galvanometer is fitted at centre. Fitted on the base plate is a second plate 8" (20.3cm) dia. with a hole at the centre to take the galvanometer, the outer edge of the plate is graduated to 360 degs.

Object Details

ID: ACO1299
Type: Earth inductor compass
Display location: Not on display
Creator: Aeronautical Instrument Co
Date made: circa 1901
Credit: National Maritime Museum, Greenwich, London, Admiralty Compass Observatory
Measurements: Overall: 35 mm; Diameter: 235 mm