A cable is drawn through a first opening of a cable holder from a rear side to a front side, and drawn back through a second opening to the rear side, and drawn again through a third opening to the front side. The cable holder on which the cable is wound is contained in a chamber of a load cell. Central lines of the cable are soldered to a circuit board in the load cell. A male thread of a nut is screwed into a female thread of the chamber, so that the cable holder is pressed against a front side of the chamber via a rubber sleeve.