Experimental carbon pencil microphone, 1878-1890

Made:: 1878-1890 in England

maker:: David Edward Hughes

Experimental microphone consisting of carbon pencil in carbon cups, probably made by David Edward Hughes, England, 1878-1890

Details

Category:: Telecommunications

Object Number:: 1922-225

type:: microphone

credit:: Executors of the late Anna C. Hughes

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Experimental carbon pencil microphone, 1878-1890

Details

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