This positioning calipers for circular saw is designed to improve cutting accuracy when using a circular saw. By combining a straight guide rail with clear measurement markings, it allows users to position the saw precisely and achieve clean, straight cuts without repeated measuring or marking. The guide rail is made from 3 mm thick premium stainless steel, and its rigid construction helps maintain cutting accuracy during operation, making it suitable for both DIY users and experienced woodworkers. The 50 cm adjustable length meets common cutting requirements for boards used in furniture projects and home renovations. Equipped with 4 smooth ball bearings, the guide glides steadily along the edge of the workpiece, supporting stable movement and consistent cutting. This cutting accessory is a practical addition to any woodworking shop, helping achieve precise wood cutting for cabinets, shelving, flooring, and general woodworking projects.