Compass, Magnetic, Type B-14, Air Corps US Army, Pre-WWII Dinah Reconaissance The receiver function tunes from

The receiver function tunes from 200-1750 kHz across 3 bands

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

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

It has a few small nicks from its service

Measures 2 inches diameter by ~2

Compass, Magnetic, Type B-14, Air Corps US Army, Pre-WWII Dinah Reconaissance The receiver function tunes fromThis 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