By designer Rachel Cross, this handy tool is two rulers in one! Use the straight edge to create double-strips, measuring 1 1/2" by 2 1/2" (4 1/2 when assembled). Use the other side of the ruler to make three, 90 degree, triangles (4" finished). This ruler is equipped with Creative Grids exclusive grip, allowing you to easily slide the ruler on your fabric yet grip firmly when pressure is applied. Use the included instructions or scan the QR code to view a video demonstration. Made in the USA.