Handi Quilter Rulers were created for use with mid-arm and longarm quilting machines of any brand. They are precision-made from high quality acrylic, chosen for its strength, clarity and durability. The 1/4 inch thickness provides safety when used with a hopping foot. Handi Quilter Rulers are always etched, never printed, to provide long-lasting accuracy. Handi Quilter Mini Scallop Ruler has a straight side for stitch-in-the-ditch. Or use the scalloped side for perfect mini clamshells. Center 1 1/4 inch mark with 1 , 3/4 and 1/2 inch marks on either side. Measures 3 x 8 inch.