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Hairspring
The spiral spring, considered as the soul of the watch, is fixed by its ends to the balance and the cock, and allows, thanks to its elasticity, to create an oscillation on the balance wheel on a regular basis.
The spiral spring, considered as the soul of the watch, is fixed by its ends to the balance and the cock, and allows, thanks to its elasticity, to create an oscillation on the balance wheel on a regular basis.