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 moved the lever on this so-called "double speed key" from side to side to make signals. This key has a switch on the side called a circuit-closer that takes the key off-line when not in use.
Location
Currently not on view
Object Name
telegraph key
date made
ca 1918
maker
J. H. Bunnell & Co.
Physical Description
brass (overall material)
metal (overall material)
plastic (overall material)
Measurements
overall: 1 1/4 in x 2 1/4 in x 5 in; 3.175 cm x 5.715 cm x 12.7 cm
ID Number
EM*320857
catalog number
320857
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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