This is a 12-1/2 inch square ruler with easy-to-read black & white markings. Ruler is marked with a one-inch grid with 1/8" and 1/4" increments within.
- Use numerical white dots and 1/4" grip sides to cut whole inches
- Turn-a-round to use the 1/2" grip side & numerical black dots to add the seam allowance
- Gripper holds fabric while cutting.