There were three metal objects with dials and switches; machines I'll call them, from which the wires ran.
After examining the various dials and switches on Quinn's machines, I had a fairly clear idea of each; I could turn it on and increase and decrease the settings.
He jumped to his feet flipping light switches and stumbling through both rooms, barely seeing still-sleeping Cynthia through eyes pinched nearly closed against the intrusive brightness.
Each subscriber's circuit on this system terminates upon the incoming portion of a selector switch, called a first selector, and is multipled upon the outgoing portions of a number of similar switches called connector switches.
Only calls originated by a subscriber pass through the selector switch (first selector) provided for his sole use; the calls incoming to him pass through one or other of the various connector switches upon which his circuit is multipled.
How would you define switches? Add your definition here.