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Station electrometer by James White

1867

Lindemann electrometer

1924

Boys' contact electricity electrometer, c. 1891

1891

Electrometer, specially designed as an electrostatic wattmeter

1900

Electrometer by Simmons

Kelvin attracted disc electrometer with replenisher

1895

Quadrant electrometer with magnet control

1895

Capillary electrometer

1890

Kelvin quadrant electrometer

1890

Wilson gold leaf electrometer

1912

Gold leaf electrometer with sliding condenser

1886

Osram Electrometer T valve

Addenbrooke quadrant electrometer No.13

1902

Quadrant electrometer in fitted case

Leaf electrometer with ionization chamber

1900

Helmholtz's quadrant electrometer

1876

Henley Pith-ball 'Electrometer', 1801-1825

1801-1825

D.C. amplifier and electrometer

1960-1979

Cuthbertson's balance electrometer

Lindemann electrometer

1924

Sir W. Thomson's absolute electrometer No. 12

1886

Smith's capillary electrometer

1902

Kolhorster electrometer by Gunther & Tegetmeyer

Boys' pocket electrometer, c.1891

1891

Single leaf gold leaf electrometer, leaf detached

Dolezalek quadrant electrometer

1913

Lindemann electrometer serial no. C435384

1946

Elster and Geitel dissipation electrometer

String electrometer by Edelmann, Munchen

Quadrant electrometer

1945-1954

First divided ring (semicircular) electrometer

1857

Kelvin portable electrometer No.91

Attracted disc electrometer

String electrometer

1929
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 portable electrometer, 1867 type, by James White. Ex-Antarctic Expedition, 1901

Kelvin portable electrometer

1867
Sir William Thomson's electrometer, portable attracted disc type by J. White, Glasgow, No. 80

Sir William Thomson's electrometer

1867-1896
Small parts from Minchin's absolute electrometer

Minchin's absolute electrometer

1901
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
quadrant electrometer consisting of glass bottle with cork stopper, constructed by Pierre Curie

Electrometer made by Pierre Curie, probably 1880s

1880-1890
Replica of original Hertz apparatus, in Deutsches Museum:- rolled paper electrometer

Replica of original Hertz apparatus

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
Addenbrooke electrometer

Addenbrooke electrometer

Clifton's electrometer

Clifton's electrometer

1888
Electrometer (without telescope) for estimating radon. Late 1940's

Electrometer (without telescope) for estimating radon. Late 1940's

Minchin's absolute electrometer

Minchin's absolute electrometer

1901
Peltier electrometer

Peltier electrometer

1870-1889
Compton quadrant electrometer

Compton quadrant electrometer

1929