Ferranti Ammeter
1950-1960
A.C. ammeter model 155
Hot wire ammeter
Ammeter graduated to 100 amperes
1887
First direct reading moving needle ammeter, 1883
1883
Moving magnet milliammeter
1900-1920
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
Hot wire ammeter
Ammeter, 5A, in mahogany case
1900-1959
Moving-magent microammeter `microid' pattern
1900-1926
Ammeter by Schuckert
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
Ferranti ammeter
Ferranti type LMk2 ammeter
Ferranti type V2015 ammeter
Ferranti type AA25 ammeter
circa 1974
Ferranti type MIN F4 ammeter
circa 1958
Ferranti type MINF32 ammeter
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
moving coil ammeter
1890
Ammeter for arc supply.
Duddell's Patent thermo-ammeter
Microammeter
Ferranti Milliammeter
1930-1950
Ferranti Ammeter
1940-1960
Ferranti Ammeter
1940-1960
Ferranti ammeter
polarized iron ammeter
circa 1888
