ジラールペルゴのインスタグラム(girardperregaux) - 5月14日 14時39分

The #girardperregaux Constant Escapement
As the culmination of years of research and development, it was the very first constant force escapement to be successfully placed in a wristwatch. The feat is an advanced and sophisticated solution to a quest that has perplexed clockmakers and watchmakers since the beginning of time, constant force – as such it is a victory over decreasing power in traditional mechanical watches to achieve greater precision and regularity. To accomplish this, Girard-Perregaux watch masters have integrated an intermediate device into the escapement, consisting of an extremely thin silicon blade that stores the energy up to an invariable threshold bordering on instability, and then transmits it all instantaneously, before recommencing the cycle.
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