Airspeed Indicator, Sensitive, 700 MPH, Army Type F-1A, US Army Air Force, WWII F-84 and service/inspection

and service/inspection

and the smallest pointer is just peaking from behind the 1000's pointer

25 inches across and ~ 3

but it was also made by Detrola

Feathering switches were found on Boeing B-17 Flying Fortress and B-29 Superfortress bombers

Airspeed Indicator, Sensitive, 700 MPH, Army Type F-1A, US Army Air Force, WWII F-84 and service/inspectionThe 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 Bendix, part number 1432 220 B A1, and has