Turn and Slip Indicator, Mk IA, RAF 1937 PBM-5 Mariner The Master Compass Indicator AN5752-2

The Master Compass Indicator AN5752-2 was an integral component of the WWII era Bendix Gyro Flux Gate Compass System used in aircraft such as the B-17

part number AW-SS-1-C

The indicator provides directional and course information to the pilot as transmitted from the gyros mounted elsewhere within the aircraft

but it is an exceptional artifact from WWII

Turn and Slip Indicator, Mk IA, RAF 1937 PBM-5 Mariner The Master Compass Indicator AN5752-2Here is an exceptional specimen of a Turn and Slip Indicator, Mark IA, invented by George Reid (according to the 'all knowing' Wikipedia) and made by Reid & Sigrist, as used on the blind flying panel of aircraft of the British Royal Air Force and the Royal Australian Air Force of WWII. It is an early version as evidenced by the all white markings; later versions had both white and green markings on the face. While the Mark IA was used across numerous