"Vernier" potentiometer (Thomson-Varley slides)
1889
Vernier potentiometer
1900-1918
Drysdale-Tinsley universal potentiometer
1910
Slide-wire potentiometer for industrial use
1893
Potentiometer, for spontaneous polarisation measurements
1931
Colvern 2 gang wire wound potentiometer
Precision Potentiometer
Lissen wire wound potentiometer
Crompton potentiometer
Lewcos wirewound potentiometer 10 000 ohms
potentiometer
potentiometer
Tinsley & Co. potentiometer
1966
Cambridge Instruments portable potentiometer
Potentiometric Recorder
1930-1960
Thermocouple Potentiometer (Electrical Resistance Meter), 1928
1928
Vernier potentiometer type 4363 serial no. 72400
1946
Deflection potentiometer no.L-270305 by the Cambridge Instrument Co. Ltd.
1950-1959
Cambridge portable potentiometer
1957
Two-metre potentiometer complete with jockey and insulated flexible lead
1954-1974
Foster Instrument Company potentiometer
1940
Fielden Temperature Indicator
1960-1969
resistance potentiometer
1897
dielectrimeter
circa 1925
Precision Potentiometer
circa 1940s-circa 1950s
Precision Potentiometer
circa 1940s-circa 1950s
Portable potentiometer no. L-150951 by the Cambridge Instrument Co. Ltd
1940-1959
original "Earley" Pocket Calibrating Potentiometer
1971
Clarastat humdinger balancing potentiometer for reduction of hum
Sator combined 10 K potentiometer
10 Ohm wirewound potentiometer
Wirewound potentiometer with swash plate contact
High resistance wire - wound potentiometer
Direct reading potentiometer
1900-1920
Feussner potentiometer No.478 by Otto Wolff
1890-1900
Single-wire potentiometer
Doran DC Potentiometer (no.3512)
1953
Early Crompton potentiometer
1900
Potentiometer, type 44228
1955-1964
Morganite 1 megohm linear potentiometer
Colvern potentiometer with integral knob
potentiometer
Tinsley & Co. ESM potentiometer
circa 1953
Sullivan's potentiometer
potentiometer
circa 1947
Varley 25 watt 50
Bulgin potentiometer with switch
Portable potentiometer model 3155-DPW serial no. 68561 scale no.2235
1960-1970