Sir William Thomson's electrometer, portable attracted disc type by J. White, Glasgow, No. 80 Sir William Thomson's electrometer 1867-1896
Kelvin portable electrometer, 1867 type, by James White. Ex-Antarctic Expedition, 1901 Kelvin portable electrometer 1867
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
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
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
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
Rhé electrometer, designed by Louis Henri Frédéric Melsens, Belgium, c.1875. The device is circular with a wooden casing and a glass top, within which is the magnetised needle resting on top of a card. The card measures 180 degrees in 10-degree increments. Underneath and hidden below the card are the copper wire coil and iron bar. The device is attached to a circuit via conductors positioned at the north and south sides of the casing which connect directly to the internal copper wire coiling. Rhé electrometer designed by Louis Melsens, c.1875 1875
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
Electrometer (without telescope) for estimating radon. Late 1940's Electrometer (without telescope) for estimating radon. Late 1940's
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