Weston Normal Cell
1928
Early moving coil voltmeter
1889
Resistance divider box for use with potentiometer
Magnetic Cabinet, 1775-1800
1775-1800
Sub-standard 1000 ohm resistance
1930
Oscillograph, Cambridge Instrument Co. No. L 28466
1930
Rymer-Jones key
Motor driven oscillograph unit with "linear sweep" mirror
1925
Weston normal cell by Cambridge Instrument Co.
Electrostatic oscillograph
1925
Battery of nine Grove cells
Siemens dynamometer
1900
Twin element permanent magnet oscillograph in box
1910
Attenuator box
Liquid crystal display as used in sthe Scopex Voyager oscilloscope
1982
Ballistic galvanometer
Capacitance bridge
1950
Silver voltmeter, for international ampere determination
1907-1930
Attenuator box
Electrophorus
1872
Astatic needle galvanometer
1840-1877
Henley's quadrant electrometer, about 1790
1770-1795
Pair of bar magnets
Kelvin astatic mirror galvanometer
1901-1913
Lindemann electrometer
1924
Model of suspension for Paschen galvanometer
1930
Standardizing and switching apparatus
1900
Boys' contact electricity electrometer, c. 1891
1891
Siemens experimental galvanometer
1900
Astatic galvanometer by Elliott Brothers, 1872.
1872
Fixed parallel plate device for measuring positive emission currents
1907-1908
Rotating spark
1872
Sectioned induction coil
1874
Resistance box by Elliott Bros., London
Leaf electrometer with ionization chamber
1900
Wheatstone bridge
1932
Apparatus for measuring latent heat and cooling effects in electron absorption and emission
1909-1912
Quiz electrostatic air filter
1981
Large interrupter by Alfred Apps, London
Dipping needle with arc
1872
Blondel triple bifilar oscillograph, 1900
1900
Medical magneto-electric machine
1854-1890
Device for measuring lateral spreading of electrons
1907-1908
Kohlrausch Galvanometer
1900
Variable capacitor calibrated in jars, No.7
Campbell mutual standard by Cambridge Instrument Co.
1925-1930
Byrnes' cell, by Ladd
1878-1883
Helmholtz's quadrant electrometer
1876
Electro-medical machine by John Browning
Leyden jar
1851-1925