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.
Currently not on view
Object Name
telegraph key
submarine telegraph key
Elliott Brothers
Physical Description
brass (overall material)
rubber (overall material)
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
catalog number
accession number
Telegraph Keys
See more items in
Work and Industry: Electricity
Telegraph Keys
Data Source
National Museum of American History, Kenneth E. Behring Center
Credit Line
from the French Cable Company
Additional Media

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