Description: Thickened: Carpenter square ruler is made with aluminum alloy material, providing a sturdy tool for carpentry needs.Clear Scale: Clear scale for accurate measurement, determining and marking angles, triangle ruler can marking 30, 45, 90 degree, for versatile measurements and applications in woodworking projects.Multifunction: Square Layout Tool is suitable for the measurement, can be used as a woodworking tool, triangle square, smooth and practical.Portable: Carpenter Square, little size to fit in your pocket or tool case. Square ruler is a multipurpose tool that can be used for measuring, marking, and can also be used as straightedge for determining flatness of a surface.Measuring Tool: The 90 Degree Square Ruler is essential for carpenter, construction professional. Specification: Material: Aluminum Alloy30/45/90 Degree Size Chart: 45mmx45mmx5.4mm/1.77inchx1.77inchx0.21inchThickness: 5.4mm/0.21inch Package Includes: 1 Carpenter Square Ruler Note: Please allow slightly errors due to manual measurement and different monitors.