A Technical Perspective – The dilemma of Constant Force in Watchmaking

Monochrome

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Constant force is a holy grail of watchmaking and chronometry. The varying driving force delivered to the regulating organ of watches affects their rate, because balance wheels are not perfectly isochronous – isochronous means that the period of oscillation is independent of the amplitude of oscillation. Modern barrels and the Swiss lever escapement offer satisfactory regularity. Still, in their ongoing search for precision, watchmakers are showing renewed interest in taming power even further. Here is our technical guide to the complex concept of constant force.

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