Description: 【Quality and Anti Glare Design】: This 4.5 inch mini triangle ruler features a matte coating that is anti glare, wear resistant, and sturdy, ensuring it won't easily break during use 【Safe and User Friendly】: Designed with no sharp edges to prevent hand injuries, the surface of the ruler allows for writing important information directly on it 【Quality Aluminum Alloy】: Made from premium aluminum alloy, this metric carpenter's square boasts high hardness and strong toughness, making it resistant to rust and ideal for long term use 【Versatile Tool for Various Projects】: Great for all construction and remodeling projects, this woodworking square can function as a protractor, miter guide, saw guide board marker, framing square, and straight edge 【Easy Marking with Thickened Edge Design】: The thickened edge design allows you to easily align your saw against the square for precise crosscuts or miters using etched protractor scales to quickly mark cutting lines on beams accurately Specification: Material: Aluminum Alloy Size Chart: 11.4cmx11.4cmx16cm/4.49inchx4.49inchx6.30inch Package Includes: 1 Carpentry Triangle Ruler Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.