Professional: Due to the extremely high accuracy given by the marks in centimeters, millimeters, it can achieve a completely professional effect. This ruler slides smoothly to position it on the material to be cut or measured, and adheres perfectly when pressed. Readable: The patchwork ruler are provided with legible pattern and precise scale displays. The gridded lines of pattern ruler are black, this makes it easy to complete a precise project in perfect. Applications: suitable for all types of patchwork, quilting, sewing, pattern, quilters templates and project. the clear material allows you to see the work you are doing through ruler. Follow the easy-to-read markings: Square for 2-1/2 inch cuts and star for 1-1/2 inch cuts, no math required! Cut five 2-1/2 or eight 1-1/2 inch strips.