Omnigrid R25G 2-1/2-Inch by 2-1/2 -Inch Grid Ruler Made from durable, premium quality acrylic plastic Laser cut smooth edge allows for easier, deeper cutting of fabric layers Black and yellow print allows the user to see the grid on dark and light fabrics Designed for left and right handed users Has 1/8-inch grid markings and 1/16-inch perimeter markings