Airspeed Indicator, Sensitive, 700MPH, Army Type F-1A, US Army Air Corps, WWII F-89 000 CDIA aircraft clocks where

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

made by Sperry

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

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

Airspeed Indicator, Sensitive, 700MPH, Army Type F-1A, US Army Air Corps, WWII F-89 000 CDIA aircraft clocks whereThe 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