Airspeed Indicator, 500MPH, Army Type D-7, US Army Air Corps, WWII Spitfire automatically firing all rocket pairs

automatically firing all rocket pairs in 10 second intervals

USN 33451 has been etched on the back of the case

made by Waltham to Air Corps US Army spec #94-27749

5 inches diameter and 2

Definitely one of the finest examples we've come across

Airspeed Indicator, 500MPH, Army Type D-7, US Army Air Corps, WWII Spitfire automatically firing all rocket pairsThe Army Type D 7 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 D 7 was made by Pioneer, part number 1426 4H A7. It is in