Telegraph Key

Description (Brief)
Telegraph keys are electrical switches used to send messages in code. The message travels as a series of electrical pulses through a wire. This British key was designed for testing underwater telegraph cables. The operator used the key to apply a charge then remove the charge from a repaired cable to make certain the circuit worked.
Location
Currently not on view
Object Name
telegraph key
submarine telegraph key
maker
Elliott Brothers
Physical Description
brass (overall material)
rubber (overall material)
Measurements
overall: 3 1/2 in x 8 1/2 in x 4 in; 8.89 cm x 21.59 cm x 10.16 cm
ID Number
EM*336824
catalog number
336824
accession number
1978.2346
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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