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Show oo- MECHANISM OF THE WATCH. Few pieces of machinery show more marvelous features than that of the watch. As a general proposition It may be slated that a watch is the smallest, most delicate instrument of the samo number of parts that has ever been devised About 175 different dif-ferent pieces of material 'enter Into its construction, and upwaid of 2400 separate operations aro comprised In Its manufacture Certain of the facts connected with Us performances are almost Incredible Incred-ible when considered as a whole A blacksmith strikes sevoral hundred blows on his anvil In a day and. as a matter of course ,1s glad when Sunday Sun-day comes, but the roller jewel of a watch makes every day and day after day 432,000 Impacts a?ainst tho fork or 157.GS0.000 blows during the course of a year, without stop or rest or some 3,151,G00,00n blows dur-Ine dur-Ine the space of twenty years, the period per-iod for which a watch is usually guaranteed guar-anteed to keep good time But tho wonder of It does not cease here It has been calculated that thp power that moves the watch Is equivalent to onlv four times ,hc force used in a flea's jump. Tho watch-power is therefore what might be termed the equivalent of four flea-power flea-power One borse-rower would suffice suf-fice to operate 270.000.000 watches. Furthermore, the ba'anco wheel of a watch Is moved by this four-f lea-power lea-power 1 43 inches with each vlbrn tion, or 355S 3-4 miles continuously in one year. Not much oil Is required to lubricate lubri-cate the little machine on its 3500-mile run. It takes onlv one-tenth of a drop of oil to oil the entire machinery for a year's service Scientific American. Amer-ican. oo |