'Quick Period' compass for scouting aircraft

Creagh-Osborn type 5/16 liquid aircraft compass, used on scouting aircrafts during the First World War, also known as 'Quick Period' compass, patent no. 1148/15, developed by Captain F.O. Creagh-Osborne, made by Henry Hughes and Son Ltd., London, 1917-1919

Details

Category:
Navigation
Object Number:
1919-531
Materials:
glass, paint, cotton (fibre), brass (copper, zinc alloy), aluminium (metal) and steel (metal)
Measurements:
overall: 175 mm x 140 mm x 105 mm,
type:
radioactive material, aeronautical compass and magnetic compass
credit:
Air Ministry