DRITZ-Design Ruler. This transparent ruler allow you to see your project under the ruler for accurate positioning and measuring. A convenient size to keep next to your machine for quick measuring and marking. Designed with multiple markings. This package contains one 6 inch ruler with 1/16 inch outer edge marks on one side of the ruler and a 3 inch centering ruler on the opposite side of the ruler. Has 1/4 inch spaced holes for centering. Imported.