Telegraph Key and Sounder Combination
date: label: date made
content: ca 1890
name: label: maker
content: J. H. Bunnell & Co.
notes: label: Description (Brief)
content: Telegraph keys are electrical on-off switches used to send messages in Morse code. The message travels as a series of electrical pulses through a wire that activate a register or sounder at the receiving end. This key is mounted with a sounder, a common arrangement.
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 Edward F. Gilroy
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.330416
label: catalog number
content: 330416
label: accession number
content: 290301
objectType: label: Object Name
content: telegraph key
physicalDescription: label: Physical Description
content: brass (overall material)
label: Physical Description
content: wood (overall material)
label: Measurements
content: overall: 4 in x 8 3/4 in x 5 in; 10.16 cm x 22.225 cm x 12.7 cm
label: Measurements
content: key: 1 1/2 in x 2 3/4 in x 5 in; 3.81 cm x 6.985 cm x 12.7 cm
label: Measurements
content: sounder: 3 1/4 in x 3 in x 4 1/2 in; 8.255 cm x 7.62 cm x 11.43 cm