Group of mercury batteries (Mallory), with cases s

Made:
1957

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Group of mercury batteries (Mallory), with cases specially plated for exhibition, comprising one 44.5 v. battery, two 1.3 volt flat-type cells of different sizes, one cylindrical type cell and one 3-cell grid-bias unit

Details

Category:
Electricity and Magnetism
Object Number:
1957-247
credit:
Ever Ready Co. (Great Britain)