Turn and Bank Indicator (Face only), Type A-1 Pre-WWII Tony Fighter The part numbers have been

The part numbers have been confirmed in the TBM Avenger Erection and Maintenance Manual dated August 1945

is fully present

The serial number

The compass fluid has evaporated but it is otherwise in very good condition for its age

made by Bendix for an aircraft of the US Navy

Turn and Bank Indicator (Face only), Type A-1 Pre-WWII Tony Fighter The part numbers have beenThis is the face section of the first Turn and Bank Indicator used in Pre WWII aircraft of the Air Corps US Army: Type A 1. By the time WWII began, the common turn and bank indicator type was up to A 5. The serial number prefix is 27, and, if the serial numbering methodology is the same as used in WWII instruments, may have been manufactured in 1927. The glass tube in intact and still contains fluid and the floating ball. Measures ~2. 75 inches