Hood, Grant · Kansas City, Mo. : Kansas City Jeweler and Optician · leaf 110
may bend it as shown in Fig. 4. Wewish to bend it at a, but as we make the bend it immediatelysprings back again, we insert the fine point of a needle orfile down a small piece of wire and insert as shown in thedrawing. This acts as a fulcrum, and with our tweezers act- 106 THE BALANCE OR HAIR… … Fig. 6. makes a revolution, that one side seems to be thrown fromthe center and the other side toward the center. We shouldnot try to watch each separate coil, but see the spring as awhole. It would be better to liken the spring to a rounadisc, if it were not revolving from the center, it could…
Clocks and watches
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