1、ALUMINUM MATERIAL: Sewing gauge is made of premium aluminum material, sturdy and not easy to deform, rust proof, with well polished edges and surface, comfortable to hold and use. 2、EASY TO USE: Simply place the sewing gauge on the target surface and hold the ends, then gently stretch it as needed and mark the distance between them with a pencil. Suitable for beginners and experienced people. 3、PROFESSIONAL: Expanding sewing gauge measures multiple equal distances, allowing you to quickly and accurately place buttons, hooks, and pleats on clothes for your sewing and marking needs in a variety of scenarios. 4、MULTIPURPOSE: Multi functional button guide sewing gauge that can also be used for woodworking equal space marking. Quickly and accurately mark positions on boards of any width or length. 5、COMPACT AND PORTABLE: Expandable sewing gauge is easy to store and carry. Before using, with one hand on each end, bend the gauge several times. Place the sewing ruler on the clothes (or craft).