Frequency Wavemeter, GE CG-60ABO, for Ships Radar, US Navy Dept of Ships Douglas There are only very few

There are only very few pencil markings on pages

the C-1 Directional Gyro was used in versions of the Curtis P-40N Warhawk and Bell P-39N Airacobra Fighters and the A-30 Martin Baltimore light bomber

This is a triple Trim Tab Position Indicator

The WWII-era Directional Gyro Mark 1A was standard equipment in aircraft of the US Navy such as fighters F4F Wildcat

was typically mounted inside of the wing or nose

Frequency Wavemeter, GE CG-60ABO, for Ships Radar, US Navy Dept of Ships Douglas There are only very fewThis artifact is a WWII era Frequency Wavemeter Type CG 60ABO made by General Electric for use by the US Navy Dept., Bureau of Ships. "For General Radar Use." The scale on the Slide Bar is graduated from 0 to 150. The slide itself has a red index marker to align with the frequency measurement scale on the Slide Bar. There is a Calibration checklist mounted inside of the felt lined cherry wood case. The thumbscrew on the end of the device loosens,