What is adjustment ?
Adjustment is the set of operations performed by the watchmaker on the regulating organ (balance and spring assembly) that ensures the smooth running and accuracy of the watch. Taking account of the parameters affecting the isochronism of this organ (e.g. variation of the moment of force transmitted to the balance, geometric shape and fixing of the balance-spring, variation of the position of a watch and the surrounding conditions such as humidity, temperature and magnetic fields) calls for exceptional manual dexterity and considerable mastery on the part of the watchmaker.
