The use of the Hacoba fully-automatic measuring system on the USK-sensocon section warping machine is studied. The chief advantage of the system is that, during the winding of the first section, the lateral traverse of each material, whether spun or filament yarn, is automatically determined correct to 1/100mm precision. The data are automatically stored so that successive sections can be wound without interruption or intervention from an operative, the same tension and diameter being maintained.