Precision Square Ruler for Stair Construction and More Designed to fit a wide range of stair dimensions, this square ruler ensures accurate angles and consistent spacing for precise, professional results in stair building and fitting. Features a builtin clear ruler with easytoread step and angle scales, allowing you to quickly mark stair treads, risers, and slopes while reducing setup time on any project. Ideal for woodworking, framing, renovation, and finish carpentry. for measuring, marking, aligning, and calibrating in both professional trades and DIY projects. Crafted from durable metal and reinforced plastic, the tool resists wear, impact, and deformation, maintaining its accuracy and reliability even with years of job site use. Practical Applications: 1. Quickly measure and mark uniform tread and riser cuts when constructing stairs. 2. Accurately align stringers during stair renovation to match existing dimensions. 3. Ensure precise angle measurements when framing or installing custom shelving and cabinetry. Specifications: Function: Measuring, marking, alignment, calibration Compatibility: Adapts to varied stair widths and angles Materials: Durable metal with reinforced plastic components Performance: accuracy, longlasting stability, and dependable markings for repeated use