Omnigrip Non-Slip Square Ruler, NeonThe Omnigrid Square Ruler is perfect for cutting squares from strips, cutting strip sets into segments, cutting pieces for quilts, trimming foundation piecing, and cutting diamonds, triangles and hexagons. It's marked for left and right handed use. Omnigrip square rulers are used for secondary cutting of strips, and to square up finished quilt blocks Use for quilting, sewing and crafts or any DIY project that calls for cut fabric Use with a rotary