Telegraph Key

Description (Brief)
Telegraph keys are electrical on-off switches used to send messages in Morse code and can spark when the circuit opens. This wireless telegraph key features a large disc on the knob to protect against the accidental shock. Until recently, “wireless” meant radio and early wireless equipment often used high voltages.
Location
Currently not on view
Object Name
telegraph key
semi-automatic key
sending key
maker
Clapp-Eastham Co.
Physical Description
plastic (overall material)
metal (overall material)
Measurements
overall: 1 3/4 in x 3 1/2 in x 8 in; 4.445 cm x 8.89 cm x 20.32 cm
ID Number
EM*320854
catalog number
320854
accession number
241556
subject
Communications
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 Franklin Wingard
Additional Media

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