The Split Seconds Slotted Ruler is one of a range of rulers created to make cutting gentle curves from squares, rectangles, or pieced blocks simple and easy. Cut gentle “S” curves from 7” – 18” squares. This multi-purpose tool features Non-Slip Gripper Strips and cuts squares, rectangles, or pieced blocks in half vertically – with a curve. These pieced curve units can then be cut horizontally and pieced into curved four-patches. Made in the USA. Designed by Karla Alexander.