Hydraulic Pressure Gauge, 20 PSI P-51 It was his responsibility to

It was his responsibility to ensure that the dials on the handset for altitude

The co-pilot would select the tank to view by rotating the knob

Here is a WWII-era Sensitive Altimeter Mk XIVA 6A/1703 as used in aircraft of the British Royal Air Force

While "Elgin" cannot be found on the watch or the packaging

The alternating Munsell green and white markings were typical of US Navy aircraft instruments

Hydraulic Pressure Gauge, 20 PSI P-51 It was his responsibility toHere is a aircraft Hydraulic Pressure Gauge, 0 20 PSI, made by Manning, Maxwell, and Moore, part number 6730 03. It is in fair condition. The glass and case are intact. Measures 2. 25 inches diameter and ~2 inches deep.