From Deb Tucker, this trim down ruler is for one of the most basic units in quilting that can be a real challenge to construct. This tool is a must have if you like making quilts with these tall star point units. Sometimes known as "Peaky and Spike", a nickname attached to the unit about 20 years ago by a famous quilter, Doreen Speckman, this particular shape has perplexed quilters forever. With Deb's tool, you'll be cutting the center and side triangles slightly over sized and then with the same tool trimming the sewn piece to an extremely precise unit with seams perfectly placed for crisp, sharp points at every intersection. So think about adding this magnificent new tool to your toolbox, you'll be glad you did. Illustrated instructions for left hand cutting and trimming are included. Ruler size: 7" x 11". Eleven unit size options: from 1" to 6" finished size in half inch increments.