- Creative Grids Acrylic Ruler.
Creative Grids 60 Degree Diamond Ruler. Increase your diamond design possibilities with the 60 degree Diamond Ruler. Cut 60 degree diamonds up to 8 1/2 inches; hexies up to 8-1/2 inches; and 60 degree triangles up to 8-1/2 inches. Maximize the design potential by cutting them from strip sets. There are even markings included to cut 120 degree side setting triangles.