Omnigrid 9-1/2" x 9-1/2" Square Quilting and Sewing Ruler

The Omnigrid 9-1/2" x 9-1/2" ruler is an excellent square-up tool; it features a 1/2" seam allowance on 2 sides; it is used for cutting triangles and borders, and to cut and square blocks 9-1/2" and under when quilting.