Good materialThe triangular ruler is made of lightweight and comfortable aluminum alloy, with good oxidation resistance and durability. Beautiful designUser-friendly design. The aluminum carpenter square has a thick overall design, which is safer and more meticulous, and refuses to be scratched. The horizontal base design makes it easy to design the edges, smooth and convenient. Scale is clear The scale of the metal ruler is clear. The printing scale is concave on the surface of the ruler, which is wear-resistant and durable. Hanging designThe triangle ruler tool has a small hole that can be hung on the wall to reduce space and make it easier to take More applicableThe protractor ruler is easy to use and comfortable to hold, suitable for linear cutting, professional design, decorative design, angle measurement, mechanical hardware sector measurement and office use.