Two Igranic-Pacent porcelain potentiometers 400-ohms, with instruction leaflets, in manufacturer's carton, c1927 Two Igranic-Pacent porcelain potentiometers 400-ohms
Vernier potentiometer 44246/2 serial no.L346153 made by the Cambridge Instrument Co Ltd in 1958 Vernier potentiometer 44246/2 1958
Potentiometric titration apparatus by Baird and Tatlock with Mullard potentiometer. Possible other part to be located. Potentiometric titration apparatus
Cambridge precision vernier potentiometer, Model No. L-93361. Cambridge precision vernier potentiometer
Potentionometer with four 50cm wires, by Philip Harris Ltd. Potentionometer with four 50cm wires 1943-1980
Potentiometer made by Cambridge Instrument Company, 1960 ca. Cambridge Instrument Company potentiometer 1960