The index (regulator) is the organ of the watch on which the first adjustments are made for the fine-tuning of the watch movement. It modifies the pace of the watch by expanding or contracting the effective length of the balance spring. The index is friction-fitted on the end piece of the balance.

The shock absorber system is integrated into the raquetterie which also comprises of mobile stud-holders, spring-holder and the full-indexes (regulators).

The Group offers standard products as well as the study and production of fine adjustment devices for specific purposes. It can also supply complete, pre-assembled index-assemblies for the balance bridge, together with standard fine adjustment devices meeting expectations of the customers.