![](https://coimages.sciencemuseumgroup.org.uk/338/611/large_thumbnail_smg00233444.jpg)
![](https://coimages.sciencemuseumgroup.org.uk/338/611/large_thumbnail_smg00233444.jpg)
![](https://coimages.sciencemuseumgroup.org.uk/323/978/large_thumbnail_smg00026357.jpg)
"Vernier" potentiometer (Thomson-Varley slides)
1889
![](https://coimages.sciencemuseumgroup.org.uk/334/422/large_thumbnail_smg00049952.jpg)
Vernier potentiometer
1900-1918
![](https://coimages.sciencemuseumgroup.org.uk/348/929/large_thumbnail_smg00052693.jpg)
Drysdale-Tinsley universal potentiometer
1910
![](https://coimages.sciencemuseumgroup.org.uk/424/118/large_thumbnail_smg00173487.jpg)
Slide-wire potentiometer for industrial use
1893
![](https://coimages.sciencemuseumgroup.org.uk/365/230/large_thumbnail_smg00176538.jpg)
Potentiometer, for spontaneous polarisation measurements
1931
![](https://coimages.sciencemuseumgroup.org.uk/486/537/large_thumbnail_smg00313349.jpg)
Colvern 2 gang wire wound potentiometer
![](https://coimages.sciencemuseumgroup.org.uk/491/958/large_thumbnail_smg00313375.jpg)
Precision Potentiometer
![](https://coimages.sciencemuseumgroup.org.uk/491/960/large_thumbnail_smg00313377.jpg)
Lissen wire wound potentiometer
![](https://coimages.sciencemuseumgroup.org.uk/439/358/large_thumbnail_smg00206514.jpg)
Crompton potentiometer
![](https://coimages.sciencemuseumgroup.org.uk/504/695/large_thumbnail_smg00314686.jpg)
Lewcos wirewound potentiometer 10 000 ohms
![](https://coimages.sciencemuseumgroup.org.uk/729/410/large_thumbnail_smg00450118.jpg)
potentiometer
![](https://coimages.sciencemuseumgroup.org.uk/731/311/large_thumbnail_smg00450138.jpg)
potentiometer
![](https://coimages.sciencemuseumgroup.org.uk/529/158/large_thumbnail_smg00221149.jpg)
Precision Potentiometer
circa 1940s-circa 1950s
![](https://coimages.sciencemuseumgroup.org.uk/529/161/large_thumbnail_smg00221152.jpg)
Precision Potentiometer
circa 1940s-circa 1950s
![](https://coimages.sciencemuseumgroup.org.uk/476/472/large_thumbnail_smg00245526.jpg)
Tinsley & Co. potentiometer
1966
![](https://coimages.sciencemuseumgroup.org.uk/208/600/large_thumbnail_cd0508_018_090220_2005_29_4_26a_meter.jpg)
Cambridge Instruments portable potentiometer
![](https://coimages.sciencemuseumgroup.org.uk/248/991/large_thumbnail_cd0745_065_160927_y1984_171_12_potentiometer.jpg)
Foster Instrument Company potentiometer
1940
![](https://coimages.sciencemuseumgroup.org.uk/478/290/large_thumbnail_smg00247810.jpg)
resistance potentiometer
1897
![](https://coimages.sciencemuseumgroup.org.uk/477/886/large_thumbnail_smg00247262.jpg)
dielectrimeter
circa 1925
![](https://coimages.sciencemuseumgroup.org.uk/318/370/large_thumbnail_smg00051791.jpg)
Thermocouple Potentiometer (Electrical Resistance Meter), 1928
1928
![](https://coimages.sciencemuseumgroup.org.uk/348/931/large_thumbnail_smg00052699.jpg)
Vernier potentiometer type 4363 serial no. 72400
1946
![](https://coimages.sciencemuseumgroup.org.uk/387/228/large_thumbnail_smg00085830.jpg)
Deflection potentiometer no.L-270305 by the Cambridge Instrument Co. Ltd.
1950-1959
![](https://coimages.sciencemuseumgroup.org.uk/372/72/large_thumbnail_smg00085972.jpg)
Cambridge portable potentiometer
1957
![](https://coimages.sciencemuseumgroup.org.uk/393/43/large_thumbnail_smg00157105.jpg)
Two-metre potentiometer complete with jockey and insulated flexible lead
1954-1974
![](https://coimages.sciencemuseumgroup.org.uk/642/994/large_thumbnail_smg00246954__0001_.jpg)
Potentiometric Recorder
1930-1960
![](https://coimages.sciencemuseumgroup.org.uk/476/436/large_thumbnail_smg00245467.jpg)
Fielden Temperature Indicator
1960-1969
![](https://coimages.sciencemuseumgroup.org.uk/371/108/large_thumbnail_smg00054264.jpg)
Portable potentiometer no. L-150951 by the Cambridge Instrument Co. Ltd
1940-1959
![](https://coimages.sciencemuseumgroup.org.uk/439/567/large_thumbnail_smg00224459.jpg)
original "Earley" Pocket Calibrating Potentiometer
1971
![](https://coimages.sciencemuseumgroup.org.uk/504/690/large_thumbnail_smg00314680.jpg)
Clarastat humdinger balancing potentiometer for reduction of hum
![](https://coimages.sciencemuseumgroup.org.uk/491/955/large_thumbnail_smg00313372.jpg)
Sator combined 10 K potentiometer
![](https://coimages.sciencemuseumgroup.org.uk/491/951/large_thumbnail_smg00313368.jpg)
10 Ohm wirewound potentiometer
![](https://coimages.sciencemuseumgroup.org.uk/491/940/large_thumbnail_smg00313356.jpg)
Wirewound potentiometer with swash plate contact
![](https://coimages.sciencemuseumgroup.org.uk/491/941/large_thumbnail_smg00313357.jpg)
High resistance wire - wound potentiometer
![](https://coimages.sciencemuseumgroup.org.uk/333/316/large_thumbnail_smg00052961.jpg)
Direct reading potentiometer
1900-1920
![](https://coimages.sciencemuseumgroup.org.uk/348/899/large_thumbnail_smg00051012.jpg)
Feussner potentiometer No.478 by Otto Wolff
1890-1900
![](https://coimages.sciencemuseumgroup.org.uk/333/292/large_thumbnail_smg00052081.jpg)
Single-wire potentiometer
![](https://coimages.sciencemuseumgroup.org.uk/342/254/large_thumbnail_smg00178396.jpg)
Doran DC Potentiometer (no.3512)
1953
![](https://coimages.sciencemuseumgroup.org.uk/340/687/large_thumbnail_smg00052618.jpg)
Early Crompton potentiometer
1900
![](https://coimages.sciencemuseumgroup.org.uk/342/24/large_thumbnail_smg00175888.jpg)
Potentiometer, type 44228
1955-1964
![](https://coimages.sciencemuseumgroup.org.uk/491/953/large_thumbnail_smg00313370.jpg)
Morganite 1 megohm linear potentiometer
![](https://coimages.sciencemuseumgroup.org.uk/491/945/large_thumbnail_smg00313362.jpg)
Colvern potentiometer with integral knob
![](https://coimages.sciencemuseumgroup.org.uk/731/316/large_thumbnail_smg00450143.jpg)
potentiometer
![](https://coimages.sciencemuseumgroup.org.uk/477/267/large_thumbnail_smg00246563.jpg)
Tinsley & Co. ESM potentiometer
circa 1953
![](https://coimages.sciencemuseumgroup.org.uk/477/882/large_thumbnail_smg00247256.jpg)
potentiometer
circa 1947
![](https://coimages.sciencemuseumgroup.org.uk/423/879/large_thumbnail_smg00050133.jpg)
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