Electrostatic voltmeter as used at RAE.
Laboratory valve voltmeter
Bristol's recording voltmeter
Voltmeter
Heathkit valve voltmeter
1970
Evershed gravity controlled voltmeter reading 0 to 120 volts
Voltmeter
1885
Elliott sector voltmeter 0-120V, serial No.1107651
8" dial
Siemens torsion type Voltmeter
Soames and Nalders patent Voltmeter
Lahmeyer electrostatic voltmeter no. 116298
Cardew hot-wire type Voltmeter no.E68
Portable moving coil voltmeter
1902
One Ayrton-Perry voltmeter
Eight inch dial
Kelvin recording Voltmeter no. 7
A F.H Royce & Co. Ltd voltmeter
Ferranti millivolt meter
Ferranti Ltd model L1609 volt meter
Ferranti voltmeter
Ferranti model VV2 voltmeter
Ferranti type A46F voltmeter
Ferranti model NS kilovoltmeter
Ferranti model RMCAB35 voltmeter
Voltmeter
before 1974
Ferranti model NS voltmeter
Ferranti voltmeter
Ferranti model NS voltmeter
Portable standard multi-range moving coil voltmeter
Ferranti voltmeter
1954
Ferranti voltmeter
Pattern K unipivot millivoltmeter
1912
Silver voltmeter, for international ampere determination
1907-1930
Ayrton & Mather electrostatic gravity voltmeter by R.W. Paul
1893-1901
Cardew's voltmeter, patent, no. 147 (Ediswan)
1890
Sensitive electrostatic voltmeter, 1893
1893-1918
Moving-coil voltmeter
1943
Voltmeter graduated to 100 volts
1887
Hot-wire voltmeter
1895
Valve millivoltmeter type 784
Direct reading two-range voltmeter
1900
Voltmeter, centre zero, scale 3-0-3V
Universal voltmeter type 261 Serial No.116 made by Sapphire Research and Electronics Ltd
1955-1960
Alioth's spring controlled voltmeter reading 0 to 250 volts
Avometer model 7 manufactured in 1956
1956
Hot-wire voltmeter
1893
Crompton 6" voltmeter no.10707 - c.1899, 0 - 150v.
