at which weakens the elastic done ina special machine, part of which is shown in force of the hair spring serves at the same time to re- Fig. 12. Fifty or more of the punchings are assembled duce the diameter of the balance, so as to exactly adapt on a split arbor, B, which is placed between the… … of which are so fine as to call for a magnifying 15.—Watch-hand Polishing Machines, effective weight of the rim in respect of vibra- glass to discover at which end is the head and tion. Forascrew placed near the supporting at which the thread. The wires enter long arnt will not, under the changes…
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