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 has a switch on the side called a circuit-closer that takes the key off-line when not in use.

Date Made: ca 1900

Maker: J. H. Bunnell & Co.

Location: Currently not on view

See more items in: Work and Industry: Electricity, Telegraph Keys, Communications


Exhibition Location:

Data Source: National Museum of American History

Id Number: 2013.3040.09Nonaccession Number: 2013.3040Catalog Number: 2013.3040.09

Object Name: telegraph key

Physical Description: metal (overall material)plastic (overall material)Measurements: overall: 1 1/4 in x 2 7/8 in x 5 in; 3.175 cm x 7.3025 cm x 12.7 cm


Record Id: nmah_1440963

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