Frequency Wavemeter, GE CG-60ABO, for Ships Radar, US Navy Dept of Ships Douglas This is a fine example

This is a fine example of a WWII-era Altimeter

There are only very few pencil markings on pages

25 inches diameter and ~2

The next 30 pages cover Allied (USAAF

Frequency Wavemeter, GE CG-60ABO, for Ships Radar, US Navy Dept of Ships Douglas This is a fine exampleThis 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,