Airspeed Indicator, Sensitive, 700MPH, Army Type F-1A, US Army Air Force, WWII Sally Bomber home of RAF Hucknall north

home of RAF Hucknall north of Nottingham England

and protects the lens from dirt and oil

Not much is known about this altimeter

P-61 Black Widow

a green light would illuminate

Airspeed Indicator, Sensitive, 700MPH, Army Type F-1A, US Army Air Force, WWII Sally Bomber home of RAF Hucknall northThe 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 739BU 03, and has a