This ruler designed by Karen Montgomery & Rachel Cross for Creative Grids® can be used to cut any 45 degree angle with seam allowance included. It will also draw circles in 1/2in increments from 1in to 46in. · Made in the USA with high quality acrylic and precision measurements ensuring accuracy for your quilting, sewing, patchwork, and crafting projects. · Creative Grids® exclusive non-slip grip allows you to easily slide the ruler over the fabric until positioned correctly. Then, when slight pressure is applied, the grip holds the ruler in place, eliminating slipping while you cut. · Easy to read black and white markings. · Includes our exclusive Turn-a-Round feature as well as all of the markings of a traditional Creative Grids® ruler. · 45 degree angles allow for adding seam allowance to flying geese units and half-square triangle blocks so you can trim before you sew. Angled lines also help in trimming binding and mitered border seams. · Use the holes drilled down the center of the ruler to draw circles. · Comes with fully illustrated step by step instructions. · Scan the QR Code printed on the ruler to view a how-to video of these features and to see the patterns that can be made with this ruler. Total Size: 4-1/2in x 24-1/2in Creative Grids® Rulers are made in the USA and sold through independent quilt shops as well as select online retailers. Creative Grids® products have a MAP/IMAP (Minimum Advertised Price/Internet Minimum Advertised Price) Policy. Please do not advertise them for less than the suggested retail price.