Liquid Oxygen Quantity Indicator, Pressure Gauge, Bendix 2426-558-A2 USAF Douglas By turning the crank

By turning the crank

was found in Tunisia in a wine cellar operating as an instrument repair shop

The case has compartments which suggest that it might have once contained additional lenses

Here is an Attitude Gyro component of a 1950's-era Lear Autopilot System (the exact early Lear system has not been determined)

The H-4 was equipped with a boom mounted microphone M-6A/UR to be used below 10

Liquid Oxygen Quantity Indicator, Pressure Gauge, Bendix 2426-558-A2 USAF Douglas By turning the crankThis LOX Quantity Indicator, 0 20 liters, is a pressure gauge which accepts oxygen in liquid form at the inlet and oxygen in gas form exits at the outlet. Must have been a high pressure application judging from its construction (number of screws and thickness of lens). Likely from the 1950s or 1960s, and produced for a US Air Force application per its MIL spec. It is in experienced condition. The dial markings are clear and the glass and case are