Kleinlein, Walter John, 1876- [from old catalog] · [Boston, Hooper printing co.] · leaf 60
he spring to collet is toface the train side of the movement and hold thebalance stationary with a small twig, and with thepallet fork justmidway be-tween the twobankings. Presume theexistence of avertical linethrough thecenter of hair-spring and col-let as shownat A B Fig.9. Then pre-sume a…
Clocks and watches
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