Educational Sound Films Limited, Manufacturer

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Maker and Role
Educational Sound Films Limited, Manufacturer
Isolating transformer (230 to 110 volts), 1 kWatt. Heavy item. Originally grey crinkle finish. Square in shape with a metal shell. Single thick leather strap across top/ Single electrical cord covered in black rubber. Cord has a three pronged rubber head. There is a two pronged socket on top of the transformer and a single black switch.
Signature/Marks and Type
E.S.F. Transformer/ PRIM VOLTS 230 SEC VOLTS 100-110/ Capacity 1 KW Serial No. 1125/ Educational sound films Ltd./ Wellington Maker's Plate
ENZIDE/CAT. 98 Embossed
Accession No
Credit Line
Educational Sound Films Limited. Transformer, 2002.52. The Museum of Transport and Technology (MOTAT).

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