Assembling individual parts like pinions, pivots, wheels, springs etc. (pignons, axes, planches, ressorts etc.) in order to form complete assemblies (e.g. mobile de grande moyenne, mobile de seconde, mobile d’échappement, balancier réglé etc.) belongs to the core competencies of Feller SA. Various joining techniques like riveting - "rivage", making of chassis - "chassage", joining of two press fits etc. are employed.