Summator meter
1950
Record bridge Ohm meter
1940-1950
Aron Electricity Meter Company electric meter
Metropolitan-Vickers Electrica
Ferranti Electric Meter
1940-1960
Ferranti model BS125-100 electric meter
Ferranti electric meter
1931
Ferranti model 196 electric meter
circa 1945
Ferranti electric meter
Ferranti Ltd electric meter A13F
Ferranti Electric Meter
1910-1950
Ferranti Electric Meter
1965
Ferranti Ltd A14F electric meter
1955
Ferranti Electric Meter
1910-1930
Ferranti Type F2K100 Electric Meter
1970-1985
Ferranti electric meter
Ferranti Wright AC Electric Meter
1890
Electric meter
Ferranti model 31015 electric meter
Ferranti model C72750 electric meter
Ferranti millivoltmeter
Ferranti Ltd electric meter
Electric meter
Ferranti Electric Meter
1910-1920
Ferranti electric meter
Ferranti Electric Meter
1910-1920
Ferranti Electric Meter
1900-1920
Ferranti electric meter
Ferranti v electric meter
Ferranti electric meter
Ferranti model 31013/1 electric meter
Ferranti P8 electric meter
Ferranti electric meter
Ferranti model FM electric meter
GEC electric meter
Ferranti electric meter
Ferranti electric meter
Ferranti electric meter
Ferranti model NS electric meter
Ferranti model FLF5 electric meter
Ferranti electric meter
Ferranti model FRF6A electric meter
Ferranti electric meter
Ferranti electric meter
Electric meter
Ferranti electric meter
Ferranti model MCBZ28 electric meter
Ferranti electric meter
Ferranti Ltd model F2Q-100 electric meter
1975