The Omnigrid 4” x 18” ruler (R418G) is a versatile tool loaded with precision markings for accurately cutting projects such as miniature quilts and Seminole patchwork. Featuring an edge-to-edge 1/8” grid plus ruler markings along all edges, the R418G adapts to either left or right hand users. Use the 30, 45 and 60 degree angle markings to cut accurate triangles, diamonds and hexagons. Omnigrid heavy-duty acrylic rulers have patented double sight lines, making the grid lines easy to see on light and dark fabrics. Made in the USA.