Hood, Grant · Kansas City, Mo. : Kansas City Jeweler and Optician · leaf 32
on thechronograph (Fig. 10). The beats of the pendulum of the clock are also re-corded so that by comparison the exact moment the star passesthe center spider web can be easily computed. Modern methods of obtaining accurate time are as farin advance of those of a century ago as the modern,… … In beginning a series of articles on modern methods usedin horology, there is nothing that interests the watchmakeror that should be better understood than the proper workingof iron and steel, yet there is no department of his work thatseems to be more neglected. A spring will break or lose…
Clocks and watches
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