Airspeed Indicator, Sensitive, 700MPH, Army Type F-1A, US Army Air Force, WWII Sally Bomber which pioneered the way for

which pioneered the way for future designs of aerial refueling aircraft

P-61 Black Widow

the manual is in very good condition given its age

The knob rotates stiffly to turn the dial to adjust for ground height

The selector enables selection of the desired track and provides to-from information

Airspeed Indicator, Sensitive, 700MPH, Army Type F-1A, US Army Air Force, WWII Sally Bomber which pioneered the way forThe 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