Office ruler is made of aluminum alloy, which is anti-rust and anti-corrosion and is not easy to break. It is durable and sturdy, has a shatterproof design for long lasting use. The geometric ruler has smooth edges, and the four corners are rounded, so don't have to worry about hurting your hands. The ruler has clear marks on one side and wavy on the other for drawing curves.In addition, it also comes with triangle and protractor dies for easy drawing of triangles and measuring angles. The children's ruler is perfect for children and is a useful geometry and measuring tool in learning, it can be used in math classrooms, teacher teaching, class, office, home, etc. Please do not store the ruler with metal or sharp objects, so as to avoid scratches on the ruler, which may cause inaccurate scales.
