Key benefits Provides accurate angle measurement for precise cuts on stringers, framing, and other components Durable aluminum alloy construction for longlasting use in tough work environments Clear 090 degree scale with easytoread marks for quick and reliable readings Strong cast aluminum body that remains stable during marking and measuring What it is The triangle angle protractor is a hand tool used to measure angles and guide cut lines on materials. Its 090 degree scale allows fast, accurate transfer of angles to your workpiece. Material and build Material: aluminum alloy Body: cast aluminum for added strength Scale: clear, easytoread markings Key features 090 degrees scale for common framing and carpentry angles Durable cast aluminum construction Readable scale that reduces measurement errors on site Applications Building and remodeling projects Hobbyists, home builders, manufacturers, DIY enthusiasts, and artists Suitable for marking cut lines on stringers, trim, moulding, and other angled components Use scenarios Framing stair stringers: set the angle at the required degree, align with the baseline, and mark the cut line for a precise fit Roofing and rafters: transfer accurate angles from plans to lumber to ensure proper joint alignment Finishing work: mark reference angles for trim, moulding, or decorative pieces to achieve consistent joints How to use 1) Place the protractor along the edge where the cut is needed and align the baseline with the reference edge. 2) Read the angle on the 090 degree scale. 3) Mark the cut line on the workpiece and verify alignment before cutting.