Omnigrid-ruler, 2.5×8 inch.The omnigrid 2.5×8 inch ruler is a convenient, portable size for classes or keeping next to your sewing machine.It features 45 degree angle markings for bias cuts and cross cutting strata strips.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.