After taking a Trapunto class with Diane Gaudynski in Lowell MA, many of us wanted to purchase a clear template/ruler from Dritz which was a “grid guide”. Viking Huskarvarna also made one for a while. It was perfect for marking parallel lines on fabric for free motion work that required more uniformity. Unfortunately it looks like both companies no longer offer them. Does anyone know where I can find one? Even a used one could be acceptable.