Telegraph Key
date: label: date made
content: ca 1890
name: label: maker
content: Siemens & Halske
notes: label: Description (Brief)
content: Telegraph keys are electrical on-off switches used to send messages in Morse code. The construction of this German key is heavier than most American models used in land-line telegraphy. The telegraph system in Germany was operated by the Deutschen Reichpost (German Post Office) for whom Siemens & Halske made this key.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
label: See more items in
content: Telegraph Keys
label: See more items in
content: Communications
creditLine: label: Credit Line
content: from the Museum of Science and Industry (Chicago)
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.327960
label: catalog number
content: 327960
label: accession number
content: 271855
objectType: label: Object Name
content: key
label: Object Name
content: telegraph key
label: Other Terms
content: telegraph key; Telegraphy
physicalDescription: label: Physical Description
content: wood (overall material)
label: Physical Description
content: brass (overall material)
label: Measurements
content: overall: 4 1/2 in x 3 1/2 in x 6 1/2 in; 11.43 cm x 8.89 cm x 16.51 cm