Omnigrid-ruler, 4×18 inch.The omnigrid 4×18 inch ruler is a versatile tool loaded with precision markings for accurately cutting projects such as miniature quilts and seminole patchwork.Featuring an edge-to-edge one-eighth inch grid plus ruler markings along all edges, the ruler 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 usa.