telegraph key

A straight key is the common telegraph key as seen in various movies.

The telegraph key often directly made and broke the 2,000 volt supply.

Entering the station, Harry found the ticket window open, with the agent busy at his telegraph key.

Some interfaces also include an input for a telegraph key.

Larry had just found it, in the form of a telegraph key!

"I suppose the third key turned out to be a telegraph key."

At last she opened her eyes again, and bent to the telegraph key.

When Dyston reached the telegraph key he managed to call for help.

But Buele did so love to work the telegraph key.

The tapping of the black holder against his teeth had a sharp quick sound, like a telegraph key.