Resistance tester Qty 1

Shallcross Mfg. Co., Selma N.C. – precision laboratory bridge instrument (USA).

A specialist electrical measurement bridge, likely a capacitance/impedance or universal AC/DC bridge used in laboratory calibration and component testing. Features decade dials, galvanometer controls, phase shift and bridge balance adjustments, indicating high-precision bench testing use (mid-20th century). Rugged professional lab construction.

W26 x D15 x H33 cm.

Untested.