Omnigrid-omnigrip non-slip ruler 1.5×12 inch.The omnigrip 1.5×12 inch ruler offers both continuous and centering inch measurements, making it the ideal tool for paper piecing.In addition, the highlighted edges are perfect for marking one-eighth and one-quarter seam allowances.Use the 45 degree angle marking for bias cuts.Omnigrip non-slip rulers offer all the essential characteristics of the standard omnigrid rulers with one important added feature: the patented non-slip backing that literally grips your fabric while you cut it.Made in usa.