Suction Gage, AN 5771-5, US Army Air Force WWII Luftwaffe while the index mark was

while the index mark was not labeled on this version) and the C-2 is ~1 inch shorter

Ammeter RF 0-3 Amps

The counter-drum-pointer altimeter consists of a pressure altimeter combined with an powered servo mechanism

The indicator measure and conveys the system oxygen pressure (i

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

Suction Gage, AN 5771-5, US Army Air Force WWII Luftwaffe while the index mark wasThis 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