Original 1943 electrical trade vintage ad for GENERAL RADIO COMPANY.  Main office and plant was located in Cambridge, MA

Manufacturers of Wavemeters.

These two instruments mark the initial and present boundaries of a development program that has produced, in the last twenty-six years, some twenty-five separate types of wavemeters, each filling a definite niche in the communication industry's need for simple-to-operate, frequency-measuring instruments.

Unbound from a 1943 electrical engineering magazine, this unique old one-page advertisement would display beautifully matted and framed. Nice graphics. World War 2 propaganda. A fabulous addition to your retro electrical library.