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 Alloy 30/45/90 Degree Size Chart: 45mmx45mmx5.4mm/1.77inchx1.77inchx0.21inch Thickness: 5.4mm/0.21inch Package Includes: 1 Carpenter Square Ruler Note: Please allow slightly errors due to manual measurement and different monitors.