WWII Bendix/Pioneer Magnesyn Functional Test Kit Aircraft Instrument Synchronizer Tester

WWII Bendix/Pioneer Magnesyn Functional Test Kit Aircraft Instrument Synchronizer Tester – U.S. Army Air Forces / Navy Aviation Ground Support Equipment

Original WWII-era Magnesyn Functional Test Kit manufactured using Bendix/Pioneer Instrument components for testing and calibrating aircraft instrument synchronization systems. Features large rotary test indicator, original instrument and aircraft wiring connectors, fuse-protected circuits, and attached wooden test fixture. Rear-mounted tag identifies the unit as a Bendix Aviation/Pioneer Instrument functional test indicator operating on 26/52 volts AC. An uncommon piece of wartime aviation electronics and aircraft maintenance equipment that would have been used by ground crews servicing military aircraft instrument systems.