Replica of Hughes microphone of 1878
date: label: date made
content: ca 1957
notes: label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Ohio Bell Telephone Company
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.315083.04
label: catalog number
content: 315083.04
label: accession number
content: 215004
objectType: label: Object Name
content: Telephone Transmitter
label: Other Terms
content: Telephone Transmitter; Telephones; Transmitter; Magneto, Carbon
physicalDescription: label: Measurements
content: overall: 4 7/8 in x 3 in x 2 1/2 in; 12.3825 cm x 7.62 cm x 6.35 cm