Liquid Oxygen Quantity Indicator, Pressure Gauge, Bendix 2426-558-A2 USAF Douglas C-47 Dakota

C-47 Dakota

early WWII-era (pointer missing)

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

By turning the crank

Here is a main tank Fuel Quantity Indicator as used in a US Navy aircraft as evidenced by the yellow USN anchor symbol stamped on its side

Liquid Oxygen Quantity Indicator, Pressure Gauge, Bendix 2426-558-A2 USAF Douglas C-47 DakotaThis 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