Capillary electrometer, Sand's enclosed pattern, with moving coil voltmeter and potential divider all in fitted wooden case, by Griffin, London Capillary electrometer 1900-1926
Sir William Thomson's electrometer, portable attracted disc type by J. White, Glasgow, No. 80 Sir William Thomson's electrometer 1867-1896
Replica of original Hertz apparatus, in Deutsches Museum:- rolled paper electrometer Replica of original Hertz apparatus
quadrant electrometer consisting of glass bottle with cork stopper, constructed by Pierre Curie Electrometer made by Pierre Curie, probably 1880s 1880-1890
Capillary electrometer after Lippmann with microscope, telescope, caoutchouc air press, manometer and cell Capillary electrometer after Lippmann with components 1876
Kelvin divided ring electrometer and gauge, made by William Thomson, 1st Baron Kelvin, 1861 Kelvin divided ring electrometer and gauge, 1861 1861
Vibrating reed electrometer type no.616B serial no.S284, by Ekco Electronics Ltd., complete with head amplifier and two interconnecting leads Vibrating reed electrometer type no.616B serial no.S284 1960
Kelvin portable electrometer, 1867 type, by James White. Ex-Antarctic Expedition, 1901 Kelvin portable electrometer 1867
Cary 401 Vibrating Reed Electrometer, made by Varian Instrument Division/Cary Products, Palo Alto, California 94303. Serial no.1369. Date of manufacture c.1978. With instruction manual Vibrating Reed Electrometer 1975-1980
Electrometer by Unilab comprising D. C. amplifier (003.813) 1 m a meter (081.111) and charge range adaptor (016.817) Electrometer by Unilab 1979