Compass, Magnetic, Type B-14, Air Corps US Army, Pre-WWII Dinah Reconaissance so it may have been

so it may have been used in a twin-engine bomber such as the B-25

See image of technical description of the system

whose fuel quantities are indicated individually on their dedicated gages on the Engineer's panel

evidence of a manufacturing year 1943

Measures 2 inches diameter by ~2

Compass, Magnetic, Type B-14, Air Corps US Army, Pre-WWII Dinah Reconaissance so it may have beenThis is a example of a pre WWII era Magnetic Compass, Type B 14, made by Kollsman using its Poly Plane Compensator design. It was made for an order by the Air Corps US Army (as evidenced by the embossed AC US ARMY) in 1937 (further evidenced by the serial number prefix AC 37). It is an electrically lighted compass, with two small lamps intact, one each above and below the lens. The fluid is discolored and about 2 3rds level. But for an 80 year old