T-shaped sliding gauge sewing measurement: the double-sided measuring system can be used to quickly and easily add the seam allowance to the pattern or marking line of the fabric. You can use it for buttonholes, seam allowance chart, DIY process, patchwork etc. Easy to use and read the numbers and make sewing much easier.5-in-1 sliding gaugeUse this practical tool to mark buttonholes; seam allowance indicator; hem measurement; compass; calliper.Premium material: the patchwork tool ruler is made of high-quality plastic, is finely processed, lightweight and elegant, strong and robust and can be used for a long time. Easy to use: the double-sided measuring system can be used to quickly and easily add seam allowance to the pattern or marking line of the fabric, lightweight and easy to use and meet your different sewing requirements. Wide ApplicationLinear 5-in-1 slide cutting tool, suitable for DIY crafts, patchwork, shoe logo. Easy to store in a sewing tool bag.