Hood, Grant · Kansas City, Mo. : Kansas City Jeweler and Optician · leaf 181
N METHODS IN HOROLOGY. posite side of the rim from the other two, being photographedfrom the under side. It also shows the rim in its normal po-sition at a normal temperature. In Fig. 8 we see the balanceand a portion of the alcohol lamp. The flame does not show,as it is nearly colorless. The rims… … Fig. 8. trifle while being photographed. In Fig. 9 we have the effectof extreme cold on the wheel. In this case the rim is thrownfrom the center. Now let us see what effect the action of heat and coldwill have on the time keeping qualities of the watch. In heat 174 THE COMPENSATING BALANCE AND…
Clocks and watches
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