Note
115 volts, 50-60 cycle,Freq. 27.120 M.C., F.C.C #D519, Amps 10, Plug included.
Artifact label reads:
Medical Diathermy Equipment
Lindquist, Los Angeles, CA
October 13, 1949
Diathermy is the use of electrical or sound waves to generate heat in the body as a treatment for pain and tension. This Chronotherm uses electricity to generate heat.