Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 619
ine of wire. The left-handfigure is the manipulator, or sendinginstrument, in which the operator hasmerely to quickly turn round theindex in the direction of the handsof a watch, by means of the knob, P,until it points to the desired letter,pause at the letter for an instant, andthen quickly… … I.— The Step-by-stepMoiiement.
Inventions
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