Airspeed Indicator, Sensitive, 700MPH, Army Type F-1A, US Army Air Corps, WWII F-89

Airspeed Indicator, Sensitive, 700MPH, Army Type F-1A, US Army Air Corps, WWII F-89The 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 739U 03, and has a

model 828 type 19Y1S

Measures 5 inches long

Mach speed is indicated from 0

The knob adjusts the indexing 'aircraft' within the dial to align the perspective of the pilot to the horizon indicator

There are two electrical connectors

This is a fine example of a Cold War-era

000 CDIA aircraft clocks where produced and equipped with Waltham’s famous 37 size

The manual appears to be complete with hundreds of pages of text

made by Sperry

It is in fine but 'experienced' condition for its age

This indicator was positioned at the Turret Trainers Station within a gun turret of a battleship or a cruiser

Here is a Wheel Position Indicator for a US military vehicle with what appears to be tandem axle steering