Cowl Flap Position Indicator, Bendix Magnesyn, C-121 Lockheed Constellation P-51 the Consolidated B-24 Liberator

the Consolidated B-24 Liberator

The cover can be removed to reveal the gyro inside

likely used by the US military during the 1940-50s: AC 0-30 Volts

The Wing De-icing System worked by channeling (or bleeding) heated air from the engines thru ducts to the wings

manufacturer unknown

Cowl Flap Position Indicator, Bendix Magnesyn, C-121 Lockheed Constellation P-51 the Consolidated B-24 LiberatorThis is a dual Cowl Flap Position indicator as used in the US Air Force C 121 transport version of the Lockheed Constellation. See photo of the location of the instrument on the Flight Engineers upper instrument panel from the C 121 flight manual dated 1958. It has a date stamp of Dec 1956 on the side case. Measures 3. 25 inches diameter and ~3 inches deep.