Image
Category
Collection
Maker
Object type
Place
Material
Date

Kelvin multicellular electrostatic voltmeter

1892-1900

Voltmeter

1885

Elliott sector voltmeter 0-120V, serial No.1107651

One Ayrton-Perry voltmeter

Kelvin recording Voltmeter no. 7

Lahmeyer electrostatic voltmeter no. 116298

8" dial

Cardew hot-wire type Voltmeter no.E68

Siemens torsion type Voltmeter

Soames and Nalders patent Voltmeter

Portable moving coil voltmeter

1902

Eight inch dial

Kelvin recording voltmeter

Ferranti millivolt meter

Ferranti Ltd model L1609 volt meter

Ferranti model VV2 voltmeter

Ferranti model NS kilovoltmeter

Ferranti model RMCAB35 voltmeter

Ferranti voltmeter

Ferranti voltmeter

1954

Voltmeter

before 1974

voltmeter

1924

Portable standard multi-range moving coil voltmeter

Ferranti voltmeter

Ayrton & Mather electrostatic gravity voltmeter by R.W. Paul

1893-1901

Pocket voltmeter, moving iron repulsion type

1910

Cardew's voltmeter, patent, no. 147 (Ediswan)

1890

Early moving coil voltmeter

1889

Silver voltmeter, for international ampere determination

1907-1930

Moving-coil voltmeter

1943

Sensitive electrostatic voltmeter, 1893

1893-1918

Voltmeter graduated to 100 volts

1887

Valve millivoltmeter type 784

Self-recording voltmeter, by Richard Freres, 1892-1893

1892-1893

Polarised iron voltmeter

Hot-wire voltmeter

1895

Pattern K unipivot millivoltmeter

1912

Voltmeter, centre zero, scale 3-0-3V

Direct reading two-range voltmeter

1900

Kelvin's patent multicellular Voltmeter no.501 by James White

Alioth's spring controlled voltmeter reading 0 to 250 volts

Universal voltmeter type 261 Serial No.116 made by Sapphire Research and Electronics Ltd

1955-1960

Avometer model 7 manufactured in 1956

1956

Crompton 6" voltmeter no.10707 - c.1899, 0 - 150v.

Crompton 8" voltmeter no.26725 - c.1910

Hot-wire voltmeter

1893

Kapp and Crompton alternating current voltmeter

Moving coil voltmeter

1894

Portable movable coil recording voltmeter no.157294

G.P.O. moving coil milliameter and voltmeter