Omnigrip 7-1/2" x 7-1/2" Non-Slip Square Quilting Ruler by Omnigrid
Dritz-Omnigrid non slip quilter's ruler. For use with rotary cutters and straight edge blades! right and left hand numbering & angle system. Diagonal line for triangle cuts an extra 1/2 inches on two sides for seam allowances. Made in USA.