I just got back from a garage sale that had quilting supplies. I bought a quilting pattern book, a non-slip ruler and a marking guide. The marking guide is medal and printed on it is ART NO. 134 TRAUM MARKING GUIDE. It has the markings for 12 inches on the longest sides and fraction markings on the short ends. There are cut outs of straight lines, dots, several sizes of half circles, a couple of corner angles and very small cut outs for a triangle, circle and square. Also on one of the long sides there are notches cut in out in inch intervals along the edge. It's about 13" long. I bought it for 50 cents, but the lady that does quilting wasn't there to ask how or what it is used for. Does anyone know and can tell me how to use it?