Astro Compass, Mk II, and Case, Boes H-21 the gyro produced vertical attitude

the gyro produced vertical attitude signals which were amplified and transmitted to the autopilot system and indicators on the flight deck of the aircraft

with an antenna wire connect from the top of mast to the top of the tail

lateral antenna)

Alternative markings have been added by hand in red on the exterior glass

was primarily used in aircraft of the Japanese Army such as the Type 4 Mitsubishi Ki-67 Peggy Bomber

Astro Compass, Mk II, and Case, Boes H-21 the gyro produced vertical attitudeA WW2 vintage aircraft Astro Compass, Mk II, in its original bakelite case, used for celestial navigation. Used across many versions of US Army Air Force aircraft with navigator crew during the era, such as bombers B 17 Flying Fortress, B 24 Liberator, and B 29 Superfortress, and transports C 46 Commando, C 47 Dakota, and C 54 Skymaster. The compass would be placed in a fixed mount on top of the instrument panel or in the navigators compartment, and