direct reading wavemeter model 127
Date: 1920-1935
Inventory Number: RS0228
Classification: Wave Meter
Subject:
Maker: U.S. Army, Signal Corps (founded 1860)
Maker: General Radio Company (1915-present)
Cultural Region:
Place of Origin:
Dimensions:
17 x 21 x 16 cm (6 11/16 x 8 1/4 x 6 5/16 in.)
Description:
Wooden rectangular case with black top panel. 2 circular windows, larger one with an arched scale (0-100) and stylized needle. Smaller one with (fixed) vertical line painted on window and moving scale underneath. It has 5 electrical connectors and a heavy switch.
A General Radio type SCR60, serial number 190.
A General Radio type SCR60, serial number 190.
Signedetched and white filled on top panel, center bottom: SIGNAL CORPS U.S. ARMY / DIRECT READING WAVEMETER / TYPE S.C.R. 60 ORDER 40733SC / SERIAL No 190 / GENERAL RADIO COMPANY / CAMBRIDGE, MASS.
on face of meter: HOT WIRE / GALVANOMETER / MODEL 127 NO. 894 / GENERAL RADIO CO. / CAMBRIDGE, MASS.
on face of meter: HOT WIRE / GALVANOMETER / MODEL 127 NO. 894 / GENERAL RADIO CO. / CAMBRIDGE, MASS.
InscribedFront piece: illegible
FunctionWavemeters can be used to check the wavelength of a strong signal source. It can also check the output of a transmitter for harmonics.
The output of this instrument is an electric current, which is read using a galvanometer, which is included.
This wavemeter was likely used in accordance with radio and military operations
The output of this instrument is an electric current, which is read using a galvanometer, which is included.
This wavemeter was likely used in accordance with radio and military operations