Electromagnetic device, Deprez signal time marker for use with kymograph

Electromagnetic device

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Electromagnetic device
Science Museum Group
© The Board of Trustees of the Science Museum

Electromagnetic device, probably Deprez signal time marker for use with kymograph (two miniature electromagnets with foil stylus) in wooden case, by Cambridge Instrument Co. Ltd., 1924

Details

Category:
Psychology, Psychiatry & Anthropometry
Object Number:
1996-277/50
type:
time marker