Sometimes you need to keep close track of your yarn usage. The AVL Yardage Counter makes this simple. Use it with your Electric Bobbin Winder to track weft usage, or with an AVL Tension Box to meter your warp. Simple to use, it can be installed or removed from its holding bracket in seconds. Never run shy of warp again--add an AVL Yardage Counter to your tool kit. Provided with all mounting hardware.