Telegraph Key

Description (Brief)
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. The operator pushes the key’s lever down briefly to make a short signal, a dot, or holds the lever down for a moment to make a slightly longer signal, a dash. The sequence of dots and dashes represent letters and numbers.
Location
Currently not on view
date made
ca 1890
Physical Description
wood (overall material)
metal (overall material)
rubber (overall material)
brass (overall material)
Measurements
overall: 1 1/2 in x 4 1/2 in x 6 in; 3.81 cm x 11.43 cm x 15.24 cm
ID Number
EM.317861
catalog number
317861
accession number
233317
See more items in
Work and Industry: Electricity
Communications
Telegraph Keys
Data Source
National Museum of American History, Kenneth E. Behring Center

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