(Black) Square Protractor School Ruler with Storage Box, Aluminum Alloy Mathematical Geometry Rulers, Mathematical Stationery

You will get --- The set includes a 15cm ruler, a 60° triangular ruler, a 45° triangular ruler, and a protractor. The 4-ruler set comes with a storage box, making it convenient to store when not in use.

Durable Material --- Our ruler is made of high-strength aluminum alloy, thicker than other plastic or stainless steel rulers. It is difficult to break or deform, sturdy and 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 different measurements.

Safe to Use --- The edges and surfaces of the rulers are smooth, free of 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 set of This ruler is small, doesn't take up much space, and is easy to carry. Ideal for teachers, students, children, office workers, etc. It's an indispensable measuring and learning tool in schools, offices, and homes.