Sandwich Line Sacle - Sandwich line to prevent numbers from rubbing off. KEARING pattern sewing ruler is made of High Quality plastic(PVC material), which is soft but strong. The sandiwch line scale is clear and accurate. The L-square ruler size is 12" x 12". The sewing ruler is excellent tool for fashion designers. It is practical measure tools during your sewing work process. Perfect for drawing, cutting, quilting, dressing making and other clothing design work. This L square will be your practical measure tools during your sewing work process, and satisfy your various needs, you can also prepare them as backup in daily life., Manufacturer: KEARING