Altimeter, Sensitive, Type C-12, 50,000 ft, US Army Air Force WWII B-47 Courter Instruments

Courter Instruments

the Zero Reader can be compared to an auto pilot in which the human pilot replaces the servos

The data label shows manufacturing for an order by the BUAER

the angled line to the semi-circle lands at the second "0"

Here is a post-WWII-era Sensitive Altimeter

Altimeter, Sensitive, Type C-12, 50,000 ft, US Army Air Force WWII B-47 Courter InstrumentsHere is a 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. The C 12 Sensitive Altimeter displayed altitude using 3 pointers. The first and