Fritts, Charles Edgar. [from old catalog] · Philadelphia, The Keystone · leaf 120
er XVI.) and not found satisfactory, itsgauge-number, and the number of vibrations it gives are usedfor calculating the gauge-number which will give the requirednumber of vibrations with that balance, according to the rule THE WATCH ADJUSTERS MANUAL. 107 given in section (266). It is of course… … FiG. 17. makers, is shown in the cut. Directions for use of course ac-company all gauges, and need not be explained here. (249). Spring-shaping tweezers ajzd pliers.—The tweezers areused for ordinary watch springs, and the pliers for the heavysprings of marine chronometers, which require more force…
Clocks and watches
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