Description: |
The telegraph is just one of many forms of communication using signals. In this case, electrical signals are sent over a wire. When the message comes to the relay, or receiver, the lever under the u-shaped rod sounds out the message. This relay, made about 1945, worked in the Western Union Company offices. |
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Source: |
http://www.digitalindy.org/cdm/ref/collection/tcm/id/644 |
Collection: |
The Children's Museum of Indianapolis |
Rights: | https://creativecommons.org/licenses/by-sa/3.0/; |
Copyright: |
Creative Commons (CC By-SA 3.0); |
Subjects: |
Telegraph Telegraph --Equipment and supplies 1940s |
Further information on this record can be found at its source.