Features: This versatile layout square combines multiple functions including marking, measuring, and levels finding into essential carpenter tool for woodworking projects. Crafted from aluminum alloy and stainless steel, it features precise markings for long lasting accuracy and a built in bubble vials for instantly leveling. Ideal for professional woodworkers, and dedicated DIYer enthusiasts requiring reliably measuring tools for intricate tasks. Use this multifunctional square on your workbench, at the construction site, or in your home workshop for precise layout, angled measurement, and ensuring levels surfaces. Its pre set angled holes allow for quick adjustments and accurate marking, enhancing your workflow and measurement precise significantly. Specifications: Size:Approx.25cm/9.84inch Size:Approx.30cm/11.81inch Size:Approx.40cm/15.75inch Component: aluminum alloy, stainless steel Number of horizontal bubble: 2 Package Includes: 1pcs Aluminum Marking Square note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.