High precise 2 in 1 aluminum alloy carpentry square combines angles ruler and straightedge for woodworking tool, ensuring measurement accuracy within 0.5mm error Perfect for furniture crafting, home renovations projects, and professional woodworking workshops requiring 45° / 90° angles verification Aluminum construction with anodized antiglare finish and upgraded triangular scale enables 0-180° marking in precise measuring tool For woodworkers, DIYer enthusiasts, and users needing clear visibility during detailed measurement tasks resistant surfaces maintains calibration accuracy through heavy use, functioning as both measuring instrument and right angles guide, Manufacturer: APGLSXY