Hood, Grant · Kansas City, Mo. : Kansas City Jeweler and Optician · leaf 100
or example. Fourth wheel has 80 teeth.Escape pinion has 8 leaves.^Escape wheel has 15 teeth. lO Sqxso X 300 vibrations per minute, Fourtli wheel has 63 teeth.Escape pinion has 7 leaves.Escape wheel has 15 teeth. 9 X = 270 vibrations per minute. Fourth wheel has 80 teeth.96 THE BALANCE OR HAIR… … Fig. 3- to select our spring; experience will aid us greatly in thistask, as it is only by doing a certain piece of work often that 97 MODERN METHODS IN HOROLOGY. we are able to do it quickly and well. It is so in fitting hairsprings. There are numerous guages for testing the strengthof the…
Clocks and watches
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