Altimeter, Sensitive, Type C-12, 50,000 ft, US Army Air Force WWII P-40 They were only as accurate

They were only as accurate as the observers knowledge of aircraft identification and of course

This would be a very cool addition to your collection

and the US Navy's SBD Dauntless and SB2C Helldiver Dive Bombers

It was the forerunner of the Bendix Polar Path and Sperry CL 11

Altimeter, Sensitive, Type C-12, 50,000 ft, US Army Air Force WWII P-40 They were only as accurateHere 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