Wireless Telegraph Key
name: label: associated institution
content: Bureau of Standards
notes: label: Description (Brief)
content: Telegraph keys are electrical on-off switches used to send messages in Morse code and can spark when the circuit opens. This wireless telegraph key features a large micarta disc on the knob to protect against the danger of accidental shock. Until recently, “wireless” meant radio and early wireless equipment often used high voltages.
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 United States Bureau of Standards, Dept. of Commerce
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.313506
label: catalog number
content: 313506
label: accession number
content: 188571
label: collector/donor number
content: R-2230
objectType: label: Object Name
content: telegraph key
label: Other Terms
content: telegraph key; Radio
physicalDescription: label: Physical Description
content: brass (overall material)
label: Physical Description
content: rubber (overall material)
label: Physical Description
content: wood (overall material)
label: Physical Description
content: metal (overall material)
label: Measurements
content: overall: 3 1/2 in x 3 in x 5 1/2 in; 8.89 cm x 7.62 cm x 13.97 cm