Cowl Flap Position Indicator, 4 Engine, PB2Y Coronado, GE Type 8DJ4, Lear Avia Inc. B-25 The knobs are functioning but

The knobs are functioning but stiff

The earth's surface reflects some of this radiated carrier

Here is an aircraft Pressure Gauge

as used in the US Army Air Corps tricycle-landing gear (wings & nose gear

the F6F Hellcat Fighter

Cowl Flap Position Indicator, 4 Engine, PB2Y Coronado, GE Type 8DJ4, Lear Avia Inc. B-25 The knobs are functioning butThis is a Cowl Flap Position Indicator for a 4 engine aircraft as used in the WWII era US Navy Patrol Bomber PB2Y Coronado made by Consolidated, GE part number 8DJ4PBH . See photo of the Coronado's engineers panel showing the location of this instrument from the Flight Manual dated 1942. Measures 3. 25 inches diameter and 3 inches deep. It is in exceptional condition for its age.