Ferranti type V2015 ammeter
Siemens electro-dynamometer-ammeter
1882
Ferranti Ammeter
1920-1950
Model 401 Thermo-Ammeter
tong-test clip on ammeter
circa 1950
Ferranti ammeter
Holden's hot wire ammeter
1900-1903
Ayrton and Perry spring ammeter
1883-1894
Siemens Brothers
moving coil milliameter
circa 1942
Thermocouple ammeter
1937
Sangamo Weston Ltd ammeter
The British Westinghouse Company ammeter
electro-magnetic current meter
1910
Direct Coil Recording Ammeter
1930-1950
Ammeter by Schuckert
Ferranti ammeter
Duddell's Patent thermo-ammeter
Ammeter, 5A, in mahogany case
1900-1959
Ferranti type AA25 ammeter
circa 1974
Ferranti ammeter
Ferranti Ammeter
1940-1960
Weston thermoammeter
Voltmeter and ammeter indicating the direct pull of a solenoid and tubular core
Ferranti ammeter.
Moving coil milliammeter
Watson Multi-range milliammete
Steelyard ammeter, 1885
1885
Moving Coil Ammeter
1884-1890
DC ammeter, as used at RAE.
Hot-wire ammeter
1931
Microammeter with combined lamp and scale
1960
RF Ammeter: spare for 2LO transmitter (7)
Hot wire ammeter
RF Ammeter: spare for 2LO transmitter (9)
Crompton multi-range milli-ammeter
Ammeter, moving iron
7-range clip-on ammeter
Ferranti Milliammeter
1930-1950
Ferranti Ammeter
1950-1960
moving coil ammeter
1910
Polarised iron ammeter
Edelmann moving magnet milli-ammeter with pointer and key mounted in lid
circa 1897
moving coil ammeter
1890
Hot wire ammeter
Dynamometer ammeter
1914
Kelvin milliammeter for alternating currents
1881-1900
Ayrton and Perry direct reading spring ammeter
