This 20-1/2 inch square features easy-to-read black and white markings printed in 1 inch grids marked in 1/8 and 1/4 inch increments.
Use the patented Turn-A-Round feature – designated by the easy to read, numerical white numbers (printed on black dots) and the 1/2 inch grip sides – to add the 1/2 inch seam allowance. A 45 degree angle is printed in black and is used to trim half-square triangles to size