Stair Tread Measuring Tool Upgraded rotatable scribe with a strong locking system keeps the tool securely positioned during use. Eliminates the need for rubber gaskets, resulting in greater measurement accuracy and improved stability. Ideal for consistent and precise stair tread and riser work. Adjustable measurement range from 16.2 to 60.1 inches using three included extension parts (16, 12, and 8 inches). Provides flexibility to handle various stair sizes and configurations, making it suitable for both residential and commercial projects. Constructed from 4mm thick aerospacegrade aluminum alloy for exceptional durability. CNC anodized finish prevents corrosion, while electroplated markings ensure longlasting visibility even in tough job site conditions. Built to withstand heavy use without performance loss. Simple adjustable stop mechanism lets you set stair tread depth quickly. Stops can be mounted on either side of the jig for convenience. Unused stops store directly on the tool or attach to any metal surface for quick access when needed. Applications: 1. Installing hardwood stair treads and risers with precise fit and alignment. 2. Measuring and cutting replacement steps in renovation projects where accuracy is critical. 3. Crafting custom staircases for modern or traditional designs, ensuring all dimensions match exactly. This tool is designed for professionals and DIY users who demand precision, durability, and ease of use in stair building, remodeling, and projects.