This 6 inch Itty Bitty Eights Square Ruler designed by Lisa Bongean of Primative Gatherigs 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 acccuracy when cutting pieces for minature quilts. Refer to the black damonds 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 aplied. Then the exclusive gripper hold the fabric in place while cutting, eliminating slipping and miss-cuts!