Hedges and Lowrie-Hall vacuum earthing device

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Hedges and Lowrie-Hall vacuum earthing device for electrical
Science Museum Group
© The Board of Trustees of the Science Museum

Hedges and Lowrie-Hall vacuum earthing device for electrical conductors

Details

Category:: Geophysics

Object Number:: 1920-157

type:: earthing device

credit:: Killingworth Hedges

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Hedges and Lowrie-Hall vacuum earthing device

Details

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