Compass, Magnetic, Type B-20 Vertical Card, WWII, US Army Air Force Vulcan The housing had been repainted

The housing had been repainted at one point

Here is an aircraft battery Ammeter

and comes in its original box

The part numbers have been confirmed in the TBM Avenger Erection and Maintenance Manual dated August 1945

a microphone trigger switch

Compass, Magnetic, Type B-20 Vertical Card, WWII, US Army Air Force Vulcan The housing had been repaintedHere is a WWII era Type B 20 Direct Reading Magnetic Compass, made by Autoflight, part number 2221. The B 20 Compass design is unique in that it contains a magnetic horizontal float suspended in damping fluid that engages the directional pointer on a vertical compass card to display direction. The pointer indicates the direction of aircraft flight. The knob in the lower left corner manually rotates the course indicating pointer (i. e., the two