Ferranti type V2015 ammeter
Siemens electro-dynamometer-ammeter
1882
Ferranti Ammeter
1920-1950
tong-test clip on ammeter
circa 1950
Ferranti ammeter
Model 401 Thermo-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
Ferranti ammeter
Ammeter by Schuckert
Duddell's Patent thermo-ammeter
Ammeter, 5A, in mahogany case
1900-1959
Ferranti ammeter
Ferranti Ammeter
1940-1960
Ferranti type AA25 ammeter
circa 1974
Weston thermoammeter
Voltmeter and ammeter indicating the direct pull of a solenoid and tubular core
Moving coil milliammeter
Ferranti ammeter.
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
Edelmann moving magnet milli-ammeter with pointer and key mounted in lid
circa 1897
Polarised iron ammeter
moving coil ammeter
1910
moving coil ammeter
1890
Hot wire ammeter
Dynamometer ammeter
1914
Kelvin milliammeter for alternating currents
1881-1900
Ayrton and Perry direct reading spring ammeter
