The Sew Easy Seam Marker adds ¼” allowance to your quilt rulers so that you can test your design before quilting it. Also a sensibility in creating your quilt designs on paper because it simulates your hopping foot.
Some templates on the market ask you to add a ¼” seam allowance, and this is the tool to do that with ease.
It is simple to use because you use the hole in the middle of the disc for your pencil and then simply roll the marker along your ruler.
Also known as wheelies, I use it to mark my quilts as I create my designs with rulers.