Compass, Aircraft Navigation, Armée de l'Air, Vion Short Sunderland as evidence by the fluid

as evidence by the fluid line across the face between 330 and 30 degrees (see photo)

2 pages per aircraft

It covers the development and basic principles of instruments used in the era

000 feet per minute

Compass, Aircraft Navigation, Armée de l'Air, Vion Short Sunderland as evidence by the fluidThis is the body of a Navigational Compass as used in aircraft of France, likely pre WWII. Made by E. Vion. The compass body would be contained in a cradle, and affixed to a mounting bracket, which could be attached to either a vertical or horizontal surface of the aircraft. This compass is intended to be positioned and read at eye level. The liquid is no longer contained in the body. The compass card floats freely. We believe it may be the compass