The escapement is a key device in mechanical watches that transfers energy to the timekeeping element and allows the number of its oscillations to be counted.
The most commonly used escapement is the so-called Swiss lever escapement but the detent escapement, also referred to as "chronometer escapement”, can guarantee higher precision.
The detent escapement became the universal standard for marine chronometers which were used on ships from the end of the 18th century till the 1970s, when they were replaced by electronic clocks.
Nonetheless, for more than two centuries the detent escapement could not be used for wearable timepieces, except for few rare high-precision pocket watches. Who invented it? How does it work? And how was the challenge to implement it in wristwatches finally won?
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