Creative Grids. One side of the ruler features a gentle 3/4" wave with a 4'' repeat between the ''waves''. This wave is extended around the end of the ruler so the waves can be matched on the corners of a project. This curve adds a dramatic finish to any project but does not require a bias binding. The straight side of the ruler features easy-to-read black markings printed in 1" grids marked in 1/8" and 1/4'' increments. Our exclusive embedded gripper holds the fabric while cutting when pressure is applied.