Model of Bell's Harmonic Telegraph Transmitter
notes: label: Description (Brief)
content: Model of Bell's Harmonic Telegraph Receiver, L-shaped electro-magnet, mounted on wooden base. A flattened steel clock-spring is clamped by one end to one pole of the magnet, while the other is free to vibrate over the other pole. This type of instrument was used by Dr. Bell in conjunction with the harmonic telegraph transmitter, Cat. # 308211, when the telephone was discovered. For details see the "Birth and Babyhood of the Telephone" by Thomas A. Watson.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from American Telephone & Telegraph Company
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.308212
label: catalog number
content: 308212
label: accession number
content: 70856
objectType: label: Object Name
content: Telegraph Set
label: Object Name
content: harmonic telegraph
label: Other Terms
content: Telegraph Set; Telegraphy; Receiver
physicalDescription: label: Measurements
content: overall: 3 in x 5 in x 3 in; 7.62 cm x 12.7 cm x 7.62 cm