De-Icing Pressure Indicator, AN5771-3, B-17, B-24, B-29 Bombers F7F Tigercat This is a dual engine

This is a dual engine Intercooler Flap Position Indicator as appeared on the US Air Force's Korean War-era Boeing B-50 Superfortress

the D-7 Airspeed Indicator is a differential pressure measuring instrument used to indicate the speed of the airplane through the air

This altimeter traversed the Sacramento Air Logistics center at McClellan Air Force Base in Nov 1982 (see label)

See photo of the location of the instrument on the Flight Engineers upper instrument panel from the C-121 flight manual dated 1958

De-Icing Pressure Indicator, AN5771-3, B-17, B-24, B-29 Bombers F7F Tigercat This is a dual engineThis is a De Icing Pressure Indicator for the de icing system used in WWII US Army Air Forces aircraft such as the B 17 Flying Fortress, B 24 Liberator, and B 29 Superfortress. Made by Electric Auto Lite with a serial number prefix of AF43, likely made for a US Army Air Force order during 1943. On the B 17G, the indicator appeared on the Pilot's overhead Compass Panel, see illustration from the B 17G Erection and Maintenance Manual in the photos. In