(Blue) Set square protractor, school set square, with storage case, set of mathematical geometry rules aluminum alloy, Mathematical stationery

What You'll Get --- The set includes a 15cm ruler, a 60° triangular ruler, a 45° triangular ruler, and a protractor, making it a 4-piece ruler set. It comes with a storage box, which is convenient for you to put away when not in use. Durable Material --- Our ruler is made of high-strength aluminum alloy, thicker than other plastic or stainless steel rulers, making it difficult to break or deform. It's strong, reliable, wear-resistant, and durable. High Quality --- Exquisite workmanship, precise scale, and clear printing. The hollow design allows for better data acquisition. You can choose the appropriate ruler for measurement based on different items to be measured. Safe to Use --- The edges and surface of the ruler are smooth, free from burrs and bumps, designed for your safety. You don't have to worry about scratching your stationery or other items, or scratching your hands. Widely Used --- This ruler set is small in size, takes up little space, and is easy to carry. It's ideal for teachers, students, children, office workers, etc. It is an essential measuring and learning tool for schools, offices, and homes.