A high quality 1/4" acrylic curved ruler set for longarm use. This ruler features an inside and outside curve and the curve matches the Quick Curve Ruler for easy stitch in the ditch. Straight and curved edges have guidelines for custom quilting and marking quilts for domestic machine custom quilting. Create quilting scallops in borders and curved crosshatching. 'QCR Curvit' curve acrylic ruler, includes 'how to' examples, by Sew Kind Of Wonderful Contemporary Quilt Designs.