Airspeed Indicator, Sensitive, 700MPH, Army Type F-1A, US Army Air Force, WWII Luftwaffe The luminous markings have turned

The luminous markings have turned color with age

The Receiver

Above this altitude an A-13A or A-14 oxygen mask were used

such as dropping with a parachute

Airspeed Indicator, Sensitive, 700MPH, Army Type F-1A, US Army Air Force, WWII Luftwaffe The luminous markings have turnedThe Army Type F 1A Airspeed Indicator was used across a number of US Army Air Corps and Air Force aircraft during WWII, including heavy bombers B 17, B 24, B 29, medium bombers B 25 and B 26, as well as light bomber A 20, according to the Accessories Interchangeability Chart dated Feb 1945. It was also used in versions of US Army Air Force WWII fighters P 38, P 39, P 40, P 47, and P 51. This F 1A was made by Kollsman, part number 729K 03, and has a