Ferranti electric meter
Ferranti millivoltmeter
Ferranti model A55F electric meter
1955
Ferranti Ltd electric meter
Ferranti model electric meter
Ferranti electric meter
GEC model CI43S1E electric meter
Ferranti electric meter
Ferranti electric meter
Ferranti electric meter
Ferranti model A440F electric meter
1961
Ferranti electric meter
Ferranti electric meter
Record bridge Ohm meter
1940-1950
GEC electric meter
Ferranti model FM electric meter
Ferranti electric meter
Ferranti model FM electric meter
1960
Ferranti type FH electric meter
circa 1940
Ferranti electric meter
Ferranti electric meter
Ferranti Electric Meter
1940-1960
Summator meter
1950
Ferranti Electric Meter
1965
Ferranti Wright AC Electric Meter
1890
Ferranti Electric Meter
1910-1920
Ferranti Electric Meter
1910-1920
Ferranti Electric Meter
1910-1950
Ferranti Electric Meter
1910-1930
Ferranti Electric Meter
1900-1920
Simpson,electric meter
Ferranti electric meter
1891
Ferranti electric meter
Ernest Turner electric meter
Ferranti model MCAA25 electric meter
Ferranti model A233F electric meter
Ferranti model MCAA25 electric meter
Ferranti electric meter
Ferranti electric meter
Ferranti electric meter
Ferranti model A233F electric meter
Ferranti electric meter
Ferranti model MIAB25 electric meter
Ferranti model MCBZ28 electric meter
Ferranti electric meter
Ferranti model MCAA45 electric meter
Demonstration of a simple mercury meter
Ferranti model NS electric meter
