Compass, Navigational, Armée de l'Air, Vion Type HA 82 Sherman Tank the horizontal pointer is exactly

the horizontal pointer is exactly on the middle luminous point

This is an authentic B-29 Familiarization and Maintenance Manual as designed by Boeing and published by AAF Publications of the US Army Air Force

Kyushu Q1W Anti-submarine Bomber Tokai aka "Lorna"

showing the location of this antenna)

Compass, Navigational, Armée de l'Air, Vion Type HA 82 Sherman Tank the horizontal pointer is exactlyThis is a fine example of a Navigational Compass as used in aircraft of France, likely pre WWII. Made by E. Vion, Type H. A. 82, it rests in its original wooden box with leather strap. The compass is affixed to a mounting bracket, which could be attached to either a vertical or horizontal surface of the aircraft. Small levers on either on either side of the round 'vibration mounts' tighten and release the security of the grip of the mount to the