EndedEnded WWll U.S. Army Air Corps Type D-12 Aircraft Compass Bendix Aviation Patt # 1833-1-A

The U.S. Army Air Force Type D-12 Direct Reading Aperiodic Compass, crafted by Bendix Aviation Co., is an authentic artifact from World War II. It was used at the navigator’s station across many U.S. WWII aircraft, including heavy bombers like the B-17, B-24, and B-29, medium bombers such as the B-25 and B-26, and transports like the C-46, C-47, and C-54. This compass is known as an aperiodic compass, which means that its needle returns to rest quickly and without appreciable overswing when deflected from its position. The radial arms or vanes attached to the card dampen the swing of the needle. The compass is mounted horizontally and read through a glass cover on the top. It consists primarily of a cylindrical metal bowl filled with compass fluid, with a semi-float type card marked with the four cardinal points. The navigators used it to determine the airplane heading. Note 2 of 3 mounting "lefs" have feet broken off. Don't have these. Appears to work fine. Local pickup in Eastgate Bellevue WA or can ship at my cost.