rd and threads it ; at 5 the screw is cut off, cate coiled hair spring is one of the most important and a plunger comes forward, seizes the screw and features of the watchmaker’s art. day. carries it over to 6, where the head is slotted; and To facilitate the turning of the balance, the fine Hair… … 16.—Fork, Pallet, and little revolving turntable, A, within the furnace and spring, and pallet and fork, metals or alloys which are Escape Wheel. kept there until the contents have been raised to the non-magnetic, but which possess the properties of proper heat. The hardness is then obtained by…
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