American Encaustic Tiling Co TS-117/GP Wavemeter Test Set Signal Corps US Army

General Radio Type 247-W Wavemeter and Filter with One Coil. 1920's

American Encaustic Tiling Co TS-117/GP Wavemeter Test Set Signal Corps US Navy

General Radio Wavemeter and filter

General Radio Type 758-A Wavemeter. Frequency In Megacycles.

Antique General Radio Wavemeter 1140-A - Untested

Vintage J. GROSS & CO. Wavemeter *With Original Wooden Case