The Omnigrid 4" x 18" mini grid ruler is a versatile tool loaded with 1/16" precision markings for accurately cutting projects such as miniature quilts and Seminole patchwork. It features an all-over 1/8" grid and 30, 45 and 60 degree angle markings to cut accurate triangles, diamonds and hexagons. It has edge markings for accurate measuring. The laser cut edges allow for smooth, deep cutting. The patented double-sight lines show up on light and dark fabrics. It is made from heavy-duty durable acrylic material with left- and right-hand numbering and angle system.Details:4" x 18"Laser cut edgesDouble-sight linesAcrylic