Turn and Bank Indicator Type A-11, AN5820-1 Air Force US Army, WWII, B-17, P-51, P-38 Vulcan 25 in diameter and ~4in

25 in diameter and ~4in deep

turns the card when caged

a green light would illuminate

or in order to distance the attacking aircraft from the blast effects of a nuclear (or conventional) bomb

Horizontal Situation

Turn and Bank Indicator Type A-11, AN5820-1 Air Force US Army, WWII, B-17, P-51, P-38 Vulcan 25 in diameter and ~4inThis Turn & Bank Indicator Army Type A 11, AN5820 1, made by Bendix Part No. 1721 2U A2, was used across virtually all aircraft of the US Army Air Force during WWII, including bombers B 17, B 24, B 25, B 26, fighters, P 38, P 39, P 40, P 47, P 51, and transports C 46 and C 47. Imprinted on the face, but barely discernible in the photos, is "AF US Army", and its serial number prefix is AC 42, indicates the manufacturing year 1942. This unit has the