Hood, Grant · Kansas City, Mo. : Kansas City Jeweler and Optician · leaf 108
ner coil to do our truing, and only the first quar-ter coil of this should be bent, so in truing in the round, we 104 THE BALANCE OR HAIR SPRING. should not bend our spring beyond a quarter of a coil fromthe point where it is pinned in. This can be better under-stood from Fig. 3, the line a. b.… … Fig. 4. be out of center as indicated by the dotted line ff., thenthe spring should be bent about half way between d. and e,which would throw the whole spring toward the right,bringing it nearer its correct position—shown by the heavyline. Should it be in the position sho .V7i by the dotted lineg.…
Clocks and watches
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