Compass, Aperiodic, US Army Air Force Type D-12 Victor According to the US Army

According to the US Army Air Force Maintenance Interchangeability Chart dated Feb 1945

This is a fine example of a WWII-era Altimeter

Production was only about 500 units

or film spools

Compass, Aperiodic, US Army Air Force Type D-12 Victor According to the US ArmyThe US Army Air Force Type D 12 Direct Reading Aperiodic Compass was used at the navigators station across many US WWII aircraft, including heavy bombers B 17, B 24, B 29, medium bombers B 25 and B 26, and transports C 46, C 47, and C 54. Made by Bendix, part number 1832 1 A, it has a serial number prefix of AF 45, indicative of a manufacturing year 1945. The navigators' direct reading compass is known as an aperiodic (without a period) compass, since