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 the cable to make certain the circuit worked.
Location
Currently not on view
maker
Muirhead & Co. Ltd.
Physical Description
brass (overall material)
metal (overall material)
rubber (overall material)
Measurements
overall: 4 in x 9 1/2 in x 4 1/4 in; 10.16 cm x 24.13 cm x 10.795 cm
ID Number
EM.336822
catalog number
336822
accession number
1978.2346
Credit Line
from the French Cable Company
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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