Astro Compass, Mk II, and Case, Boes H-21 the 6A/1581 appeared in the

the 6A/1581 appeared in the DeHavilland Mosquito

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

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

This WWII-era

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

Astro Compass, Mk II, and Case, Boes H-21 the 6A/1581 appeared in theA 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