"Valley" battery charger no.167239 incorporating a vibrating contact rectifier

Made:
1925
SMG00208260

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SMG00208260
Science Museum Group
© The Board of Trustees of the Science Museum

"Valley" battery charger no.167239 incorporating a vibrating contact rectifier, about 1925

Details

Category:
Electricity Supply
Object Number:
1971-138
type:
battery charger
credit:
Ellis, J.