Altimeter, Sensitive, Type C-12, 50,000 ft, US Army Air Force WWII F4F Wildcat The system allowed a single

The system allowed a single gunner to train

as used in B-17s (glass cracked)

This specimen of the WWII-era Model 2 Sensitive Altimeter is made by Tanaka for aircraft of the Japanese Navy

It's condition gives clues of its age

Here is a WWII-era artifact: an Oxygen Flow Indicator

Altimeter, Sensitive, Type C-12, 50,000 ft, US Army Air Force WWII F4F Wildcat The system allowed a singleHere is an early WWII era Sensitive Altimeter, Air Corps US Army Type C 12, made by Kollsman. The C 12 Altimeter was used across all aircraft of the Air Corps US Army, including heavy bombers B 17 and B 24, medium bombers, B 25 and B 26, Fighters P 38, P 39, P 40, P 47, and P 51, and transports C 46 and C 47, according to the Maintenance Interchangeability Chart dated Dec 1943. It has a serial number prefix AF 43, evidence of a manufacturing year