Airspeed Indicator, Sensitive, 700MPH, Army Type F-1, US Army Air Force, WWII Cessna loosen clamp (C)

loosen clamp (C)

The small protrusion right of the digit display counter was likely used to reset the counter to zero once pressed

Also note the photo of the fuel tank locations in a B-36H with their capacities in gallons (note that the gages indicate fuel in pounds

The knob turns and the display rotates as it should

Airspeed Indicator, Sensitive, 700MPH, Army Type F-1, US Army Air Force, WWII Cessna loosen clamp (C)The Army Type F 1 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 1 was made by Bendix, part number 739U 03, and has a serial