"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
Precision Potentiometer
circa 1940s-circa 1950s
Precision Potentiometer
circa 1940s-circa 1950s
Tinsley & Co. potentiometer
1966
Cambridge Instruments portable potentiometer
Foster Instrument Company potentiometer
1940
resistance potentiometer
1897
dielectrimeter
circa 1925
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
Potentiometric Recorder
1930-1960
Fielden Temperature Indicator
1960-1969
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
potentiometer
circa 1947
Sullivan's potentiometer
Varley 25 watt 50
Bulgin potentiometer with switch
Universal Potentiometer Type K-3 Catalog No.7553-5 No.1599601
1960-1979
Portable potentiometer model 3155-DPW serial no. 68561 scale no.2235
1960-1970