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. This key is a very simple type known as a strap key.
Location
Currently not on view
Object Name
key
telegraph key
date made
ca 1910
Physical Description
metal (overall material)
plastic (overall material)
Measurements
overall: 2 in x 4 in x 2 in; 5.08 cm x 10.16 cm x 5.08 cm
ID Number
EM*333359
maker number
3B
accession number
294351
catalog number
333359
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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