Abstract: Connection of a shaft with an element, in particular the shaft of a rotary setting element with a seating wheel, said connection comprising a recess provided for setting said shaft in said element and an opening by which said recess is connected with the outer edge of the element and through which the connection can be effected by relative movement of the shaft and the element transversely to the axis of said shaft, characterized in that a second element is inserted into the opening in a direction transversely to the axis of the shaft and that interlocking means provided on the first element and the second element cooperate to fix the second element in the opening of the first element.