[Flexible Combination] - Our stair tread template tool features 16'', 12'', and 8'' aluminum sliding rods, allowing you to combine them to meet various measurement needs. With an adjustable range from 10.5'' to 60.5'', it’s ideal for all stair tread and riser projects. [Angle Measurement Made Easy] - The tool includes a 0°-180° protractor etched into the center of the 10-inch gauge panel, with additional 0° and 180° angle markings on the corners. Perfect for achieving precise angles when measuring stair treads, risers, or other woodworking projects. [Wide Range of Applications] - Designed for professionals and DIY enthusiasts, this stair tread jig is perfect for measuring stair treads, wooden floors, window sills, closets, and more. A must-have for woodworking, construction, and home improvement tasks. [Premium Quality & Durability] - Made from high-strength aviation-grade aluminum alloy with a thickness of 0.16 inches (4 mm), this tool is built to last. Its CNC anodized surface ensures resistance to wear, rust, and deformation, making it suitable for heavy-duty use. [Easy to store and carry] - Comes with a sturdy plastic case to keep all components organized and protected. Its compact design ensures portability, making it the perfect tool to carry to a variety of job sites or to store neatly when not in use. The Stair Ruler is a stair tread template tool designed for DIYers and professional craftsmen. Whether you are refurbishing an old staircase or installing stairs in your new home, this tool will help you measure and cut the perfect stair treads with ease. Made from high-quality materials, this stair ruler is sturdy and durable, ensuring that it won't warp or break with long-term use.Its unique design allows for more accurate measurements and can easily accommodate a variety of stair shapes and sizes. The scale on the stair ruler is easy to read, so you can quickly get the dimensions you need for both straight and curved sections, saving you a lot of time and effort. With the Stair Ruler, you will be able to easily draw the shape of each tread without complicated calculations or tedious steps. It is not only suitable for professional installers, but also perfect for home users, you can complete the decoration and remodeling of your staircase at home by yourself and give the space a new look. Choose Stair Ruler to make your staircase project simple and efficient!