Compass, Aircraft Navigation, Armée de l'Air, Vion Short Sunderland It covers the development and

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

All of the examples of these that we've seen appear to have been directly built onto the instrument panel (as opposed to being separate units such as landing gear indicators Army Type A-2

and bombs) as well as through an independent camera circuit

part number 8604-1

Compass, Aircraft Navigation, Armée de l'Air, Vion Short Sunderland It covers the development andThis 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