The "Fabric Gripping Rulers" in metric were designed by Betty Gall starting in 1988. They have shown continued success in Europe, Canada, and other areas of the world using metric measurement. Use these rulers for strip cutting and squaring up. They have cm and 5 mm markings along with angle markings . They have our exclusive molded in "Fabric Gripping Action" which many have attempted to copy but no one has quite accomplished. Now 6 of our metric rulers have "Fabric-Gripping Action".