The Omnigrid marking ruler trio contains 3 rulers that can be used to quickly and accurately perform a variety of marking tasks when quilting; their center lines are exactly ¼Â from both edges of the rulers, providing an excellent reference line for marking ¼Â sewing lines, adding and checking ¼Â seam allowances and marking ¼Â quilting lines.
Three convenient lengths: 4", 6" and 12"
Use a pencil with a fine, sharp point for the most accurate mark
Do not use with rotary cutters, knives or other cutting instruments
Rulers are designed for marking use only