Potentiometer
1905
Potentiometer, serial no.4696
1911
Potentiometer, by Cambridge Instrument Co. Ltd.
Potentiometer serial no.1796 by H. Tinsley and Co.
1912
potentiometer no.114 - 1890
potentiometer no.1012 - 1920
Potentiometer, incorporating 2 standard cells
1893
Potentiometer, serial no.988
Potentiometer and Wheatstone Bridge with 4 x 0.5m wires
1900-1943
Potentiometer type 3387B
1960-1979
Potentiometer, for electrometric titration apparatus
1925
Potentiometer with set of contacts
Potentiometer - 1887
Potentiometer type 4025C
1950-1960
Potentiometer type 4025 no.106073
1950-1960