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

It is very similar to I-65 compass indicators used in aircraft of the Air Corps US Army during WW2 (the primary difference in appearance being the centerpoint of direction

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