Suction Gage, AN 5771-5, US Army Air Force WWII Luftwaffe Ammeter RF 0-3 Amps

Ammeter RF 0-3 Amps

and D (Dull) are displayed on the inner ring

the pointers do not reset

and Fw190D thru Ta152

used to indicate the supercharger power being delivered to the engine when demanded

Suction Gage, AN 5771-5, US Army Air Force WWII Luftwaffe Ammeter RF 0-3 AmpsThis is a fine example of an WWII era Suction Gage, AN 5771 5, made by US Gauge, part number AW 1 7 8 21 AK. This indicator has a serial number prefix "AF 43", evidence of a manufacturing year 1943. The AN 5771 5 Suction Gage was used across all aircraft of the US Army Air Corps, including bombers B 17, B 24, B 25, fighters P 38, P 40, P 47, P 51, and transport C 47. The Suction Gage measured the amount of vacuum generated to power the pneumatically