Free Air Temperature Indicator Type C-12 US Army Air Corps Weston 102134 Avro likely 1940-50's vintage

likely 1940-50's vintage

This looks very similar to the altimeter depicted in the JN-4D Curtiss Jenny cockpit at the US Naval Aviation Museum website

The aircraft from which this instrument was removed appears to have had an upper operating limit of 2800 RPM judging from the limit markings in thin red tape that have been applied upon the numerical scale beneath the glass

this indicator was used in the Avro Anson

perhaps others

Free Air Temperature Indicator Type C-12 US Army Air Corps Weston 102134 Avro likely 1940-50's vintageHere is a WW2 vintage electrical Free Air Temperature Indicator, used to measure outside air from 45 to +45 degrees C, Type C 12. Embossed on the face (black on black) is AC USArmy (Air Corps), so it is pre March 1942 vintage. The C 12 indicator was used in a variety of WW2 aircraft, primarily trainers. This case of this indicator is not affixed, and can be easily removed to inspect the internal mechanism. The glass is loose and appears to need a new