Airspeed Indicator, 700MPH, Army Type F-2, US Army Air Corps, WWII Fairey Fulmar hard to discern

hard to discern

The metal seal is in place in the lower right of the case

was used to train fighter pilots on the tactics of fixed gunnery when pursuing enemy aircraft

according to its markings

As found AlternateWars

Airspeed Indicator, 700MPH, Army Type F-2, US Army Air Corps, WWII Fairey Fulmar hard to discernThe Army Type F 2 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 2 was made by Bendix, part number 1426 37A A6, and has a