second wire thread 3 are shaped approximately identically with each other and shaped as half cylinders the two halves of the cylinder 11 and 12 thereby lie flat against each other and produce a circular shaped cross section in their assembled or pressed together condition in this case the individual wire threads 2 and 3 are also enveloped preferably by an outer sleeve 13 in accordance with the forms of the invention presented in fig4 through 7 the magnetic fields 4 can be generated within each wire thread and also from one wire thread to the other permanently magnetically whereby as shown in detail in a top view in fig5 of the guide device 1 in accordance with fig4 in which the individual wire threads are nevertheless separated from each other each wire thread 2 and 3 is alternately oppositely polarized along its length and in the radial direction a mutual attraction of the wire threads 2 and 3 results from this with the axial arrangement of the wire threads 2 and 3 in accordance with fig5 as this is emphasized through the arrows a directed at each other in fig5 if the second wire thread 3 is now moved in the direction of arrow b relative to the first wire thread 2 in the axial direction as indicated in fig6 the wire threads 2 and 3 repel each other as the same polarities lie opposite each other in the wire threads this is emphasized by the arrows c directed away from each other in fig6 it is clear that the effect of the repulsion of the wire threads shown in fig6 can also be achieved beginning with the arrangement in accordance with fig5 in such a way that the first.