Features: This for Triangle Ruler is Made of sturdy aluminum alloy after oxidation treatment, this woodworking for triangle ruler is durable, resistant to distortion, practical, anti-rust and corrosion resistant. Engraved imperial and metric scales on the front and side of this angle ruler are clear and precise, making it convenient and easy to read value or make marks while using. Lightweight and portable, easy to carry or store; square with 0.6inches thickness allows it to stand up by itself, using for measuring the length, height and thickness. The large center hole design would fit for your finger to hold or fasten this ruler on workpieces, easy and comfortable to place, handle or move around and won'for t damage fragile cutting edges. This 45 degree aluminum alloy angle ruler is designed to clamp boxes, photo frames, etc, to assist with square making process; an essential tool for woodworking lovers, home builders, carpenters. Specifications: Material:Aluminum Alloy Dimension:Approx. 88x88x14mm/3.46x3.46x0.6inches Net Weight: Approx.150g Note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1 x Angle Ruler