Astro Compass, Mk II, and Case, Boes H-21 with an antenna wire connect

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

Was also installed with a "formation stick" controller in some aircraft

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

lateral antenna)

Astro Compass, Mk II, and Case, Boes H-21 with an antenna wire connectA 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