A Model 5430 Leeds & Northrup galvanometer. This was a “second-generation”, electrical-measurements instrument, developed about 1960. “First-generation” galvanometers used mechanical movements and mirrors to detect small deflections produced by currents in a magnet coil. This instrument would have been used primarily for measuring electrical resistance in circuits. It would have been particularly useful in locating shorts to ground in the field by helping to identify the distance to a short when the resistance per unit length of wire is known. The galvanometer is housed in a wooden box that measures 22 cm by 19 cm by 16 cm in height.
