Suction Gage, US Navy Oscar Fighter part number 10499-A

part number 10499-A

Since the factory seals are intact over screw heads

22386 (although it appears closer to the Fl

made by Waltham to Air Corps US Army spec #94-27749

both of them were still awards

Suction Gage, US Navy Oscar Fighter part number 10499-AThis is a US Navy Suction Gage, made by Kollsman. It is labeled as last service at Naval Air Station Quonset Point, RI, in 1953. The Suction Gage measured the amount of vacuum generated to power the pneumatically operated gyroscopic instruments, such as the Gyro Horizon (Flight Indicator), the Directional Gyro, and the Turn and Bank Indicator, as well as automatic pilot systems. The vacuum is generated by either a engine powered vacuum pump or