Our Triangles have some great features you will love! First, over the years we have come to realize that clear acrylic rulers and tools often cast a dark shadow along the edge which can have an impact on the accuracy. For that reason, ours are made from Fluorescent Green Acrylic which using the light in the room will naturally light up the edge for more accurate marking and cutting.
Next, all the markings are "Laser Etched or Engraved" into the acrylic so the lines and marks can never rub off. This also helps with slipping but for the best ruler "Grip" we recommend the affordable Grip Dots. They provide extra "grip without raising your tools off the fabric so you aren't marking or cutting under the tool. It takes very few dots per tool for great grip so an affordable package goes a long way