Telegraph Key
notes: label: Description (Brief)
content: Telegraph keys are electrical switches used to send messages in code. The message travels as a series of electrical pulses through a wire. The exact method of operating this automatic double-current key is unknown at this time. The key may have been used in laboratory experiments at King's College in London investigating submarine telegraph signaling.
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 University of London King's College, Department of Physics
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1990.0539.12
label: catalog number
content: 1990.0539.12
label: accession number
content: 1990.0539
objectType: label: Object Name
content: telegraph key
physicalDescription: label: Physical Description
content: wood (overall material)
label: Physical Description
content: brass (overall material)
label: Measurements
content: overall: 2 1/8 in x 5 3/4 in x 10 5/8 in; 5.3975 cm x 14.605 cm x 26.9875 cm