Perforated Seam Sew Quilting Ruler Measuring Ruler Patchwork Stencil 40JAOOTDTY Features: General Sewing Accessories: suitable for home sewing machines and can be used to create seam patterns along with fabrics. This seam gauge is compatible with all types of quilting and sewing machines. Easy to use: simply slide the sewing guide under the presser foot to place the needle in the required sewing hole for an accurate edge. It is a good helper of the quilting machine to get the correct seam size. High-quality Materials: Made of high-quality acrylic, non-toxic, tasteless, , easy to clean, and can be used for a long time. Transparent Feature: Transparent green sewing ruler, it is easy to see the hole and fabric underneath. It is convenient to enter the needle, the graduation line is more obvious, and the sewing accuracy is better. Sewing Guide: The seam indicator has a 45-degree line and is used to trim semi-square triangles. Specification: Material: AcrylicSize: Approx. 13.9x6.3cm/5.47x2.48 inPackage Included: 1x Ruler of Seam AllowanceNote: 1. Please allow 1-2cm errors due to manual measurement, please make sure you do not mind before ordering.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.