Variable Inductor Qty 1

General Radio Co. Variable Inductor, Type 107, Cambridge, Mass., U.S.A. A precision laboratory variable inductor used for radio-frequency experiments, bridge measurements and tuning circuits. Adjustable inductance via calibrated dial, with series/parallel and mutual inductance options. Housed in a wooden cabinet for bench use. Typical early American radio laboratory equipment. c.1920s–1930s.

W17 x D17 x H24 cm.

Untested.