Turn and Slip Indicator, Mk IA, RAF 1937 PBM-5 Mariner part number AW-SS-1-C

part number AW-SS-1-C

has a rotating disk with Pioneer and numbers on it for us as a course reminder

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

The compass pointer is slightly sticky as it rotates

It is in decent condition given its age

Turn and Slip Indicator, Mk IA, RAF 1937 PBM-5 Mariner part number AW-SS-1-CHere 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