The Fiskars® Folding Square Ruler has a smart folding design that helps save creative space at home and on the go! This 8.375 in . x 8.375 in. folding ruler can be used open as a square or transformed into a triangle as you square off corners and cut half-square triangles, rectangles or squares without fabric waste. A clear, durable hinge allows the ruler to lie perfectly flat for exact alignment for smooth cuts without catching or snagging. Markings feature easy-to-read numbers and grid lines for enhanced visibility with transparent, two-color design that can be read on light, dark and patterned fabrics. There is a 3/8 in. unmarked seam allowance on 2 sides.