This O’Lipfa Square quilting and sewing ruler is designed for precise cutting and measuring in quilting and sewing projects. Made for use with Olfa cutters and mats, it features clear gold markings on a transparent base for easy visibility and accuracy. The 12 1/2-inch by 12 1/2-inch square format makes it versatile for various fabric cutting needs. The ruler is in very good condition with minimal signs of use.