Louët's Warp Tension Regulator ensures a tight warp. Whether one type of yarn is used, or a variety of types and thicknesses of yarns, the regulator makes sure that all the threads are put on the loom tightly and neatly. It has an adjustable tension on a friction drum and plastic disks to keep the threads separate. An innovative and different take a tension box. The regulator clamps on the backbeam of the Louët and most other brand looms.