1. materials: This linear bow scribing tool is crafted from durable aluminum alloy and stainless steel, offering wear resistance, practicality, and a long service life. The quality materials ensure reliability for various woodworking applications. 2. Accurate measurement: Easily measure and mark with precision, elevating the professionalism of your woodworking projects. The dualuse scribing tool is designed for userfriendly operation, enabling precise measurements across a range of tasks. 3. Multifunctional use: This versatile tool accommodates pens of different sizes and is suitable for wood, ceramic, iron, acrylic, and more. Its adaptable design makes it ideal for DIY enthusiasts working with diverse materials. 4. Complete DIY tools: The set includes a pen, holder, pens, and a spring, allowing you to tackle DIY projects independently. The linear arc scribing tool is for DIYers seeking comprehensive tools to enhance their woodworking experience.