Search Results for: Ignition magnetos
last switchboard operator for a hand-crank phone when that exchange was converted; [ ] manual central office switchboards continued in operation at rural points like kerman, california , [ ] and wanaaring, new south wales , as late as , but these were central-battery systems with no hand-cranked magnetos
last switchboard operator for a hand-crank phone when that exchange was converted; [ ] manual central office switchboards continued in operation at rural points like kerman, california , [ ] and wanaaring, new south wales , as late as , but these were central-battery systems with no hand-cranked magnetos...
https://en.wikipedia.org/wiki/Switchboard_operator