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kilowatt-hour meter (intermittent integrating type) by Holden

Reason patent kilowatt-hour electricity supply meter

Pre-payment electricity supply meter

1928
Hookham's patent alternate current electricity supply meter, serial no. 38964, 200 volts, 5 amp, 90 cycles per second, by Chamberlain & Hookham Ltd., Birmingham, 1895-1905

Hookham's patent alternate current electricity supply meter

1895-1905