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. In general, Omnigrid square rulers are used for secondary cutting of strips, and to square up finished quilt blocks Use with a rotary cutter or a straight-edge blade Diagonal angle line Edge markings for accurate measuring Laser cut edges for smooth, deep cutting Patented double-sight lines that show up on light and dark fabrics Heavy-duty durable acrylic material Left- and right-hand numbering and angle system
