This 3 by 7 inch Itty-Bitty Eights Rectangle Ruler, features easy to read 1/8 inch markings. The black and white dashed eighth inch markings show on both light and dark fabrics. The dashed 1 inch grid lines ensure accuracy when cutting pieces for miniature quilts. Refer to the black diamonds when cutting 1/8 inch units; the white diamonds when cutting 1/4 inch units. The ruler slides easily over the fabric until pressure is applied. Then, our exclusive gripper holds the fabric in place while cutting, eliminating slipping and miss-cuts!