Free Air Temperature Indicator, Type C-8 US Army Air Corps Weston 728 T-20 Korean War or transport aircraft such as

or transport aircraft such as the C-46 or C-47

as well as Bombers B-17 Flying Fortress and B-26 Marauder

such as the Lockheed F-104 Starfighter (see photo from F-104 Flight Manual in gallery)

The clock has the following features:

made by Fairchild

Free Air Temperature Indicator, Type C-8 US Army Air Corps Weston 728 T-20 Korean War or transport aircraft such asThis is an exceptional example of the WWII era electrical Free (i. e., ambient) Air Temperature Indicator, US Army Air Corps Type C 8, as used in versions of the heavy bomber B 24 (see photo of instrument panel from a B 24 Flight Manual showing the location of the indicator), also medium bombers B 25 C D Mitchell and B 26 B C Marauder, transports C 87 and C 45, and trainers AT 7 and AT 11, according to the Maintenance Interchangeability Cross