Fig. 153 Fig. 153 forked arm was not thought of, for the pendulum itself formed apart of the verge. A far-reaching step had been taken, but it soonbecame apparent that perfection was still a long way off. The crown-wheel escapement forcibly incited the pendulum to wider oscillations ;these…
Clocks and watches
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![An illustration from [Abercrombie & Fitch Co., New York : Christmas Catalogue, 1916] (1916)](https://img.insideoutlibrary.com/img/200/ia-abercrombiefitch00aber_0-16-28.webp)
