Double needle telegraph, with two electric alarms inside, 1840

Made:: 1840

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Double needle telegraph (c
Science Museum Group
© The Board of Trustees of the Science Museum

Double needle telegraph (c. 1840) with two electric alarms inside

Details

Category:: Telecommunications

Object Number:: 1949-325

type:: telegraph

credit:: King's College, London

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Double needle telegraph, with two electric alarms inside, 1840

Details

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