Hood, Grant · Kansas City, Mo. : Kansas City Jeweler and Optician · leaf 120
to fall upon the impulse face, a veryserious defect; on the other hand, if the locking is excessive,then too much power is required in unlocking, and all powerthus used is just that much less for the impulse to the balance. 115 MODERN METHODS IN HOROLOGY. /x> Z y ttfX^^vQ // ^ ,o, \ ^ \ 116 THE… … Fig. 3- getting this point thoroughly impressed upon our mind, thedrawing shown in Fig. 3 has been made. The R. stone is di-vided into six equal parts shown by the dotted lines length-wise. The amount of the Ibck should be equal to the width of 117 MODERN METHODS IN HOROLOGY. one of these spaces,…
Clocks and watches
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