7-range clip-on ammeter
Hartman and Braun ammeter no.9382 scaled 0-800A
1890
Portable ammeter no.9865 - 1898 0-15, 0-75amps
Ammeter/voltmeter n.277 - 1882, .5amp, 3.5v.
H.F. ammeter (0.2)
ammeter, Siemens torsion type
Ammeter no.15740 - 1902, 0-10, 0-40amps
1902
Crompton 6" ammeter no.62214 - c.1916, 0 - 15amps.
Crompton portable ammeter no.9614 - c.1899
ammeter, prototype - 1884 15-40amps
Crompton multi-range milli-ammeter
Thermocouple ammeter
1937
Ammeter, 0-50, 0-150 amps
First alternating current magnifying strip spring ammeter
1888
Dead beat hot wire ammeter
Ammeter, moving iron
366B aerial ammeter (M.F.) no. 2715
Ammeter, 5A, in mahogany case
1900-1959
Moving-magent microammeter `microid' pattern
1900-1926
Duddell's Patent thermo-ammeter
A.C. ammeter model 155
Ammeter graduated to 100 amperes
1887
First direct reading moving needle ammeter, 1883
1883
Moving magnet milliammeter
1900-1920
Hot wire ammeter
Hot wire ammeter
Ferranti Ammeter
1950-1960
Ferranti ammeter
Ferranti ammeter
Ferranti type LMk2 ammeter
Ferranti type V2015 ammeter
Ferranti Ammeter
1940-1960
Ferranti type AA25 ammeter
circa 1974
Ferranti type MIN F4 ammeter
circa 1958
Ferranti type MINF32 ammeter
Ferranti Milliammeter
1930-1950
Microammeter
Ferranti ammeter
Ferranti Ammeter
1940-1960
Siemens ammeter
circa 1900
Ferranti ammeter
Ferranti ammeter
electro-magnetic current meter
1910
The British Westinghouse Company ammeter
moving coil ammeter
1910
moving coil milliameter
circa 1942
polarized iron ammeter
circa 1888
moving coil ammeter
1890
