This aluminum alloy ruler set is nice for students, schools, homes, and offices. The set includes triangular rulers, protractor, and straight ruler, making it ideal for geometry, drafting, and architectural projects. The aluminum alloy construction ensures long-lasting use, while the precise measurements help achieve accurate results in every task. Features - Color: Black -Material:Aluminum alloy - Size: 9.50X5.70X0.10cm/3.73X2.24X0.04in - Size: 12.00X6.00X0.10cm/4.72X2.36X0.04in - Size: 12.00X7.00X0.10cm/4.72X2.75X0.04in - Size: 15.70X2.20X0.10cm/6.17X0.86X0.04in -Multifunctional set: includes triangle ruler, protractor and straight ruler, catering to various geometric measurement needs -Strong material: made from aluminum alloy, this ruler set is sturdy, resistant to deformation, ensuring long term use -Wide application: suitable for students, schools, homes, and offices, this ruler set meets diverse geometric drawing requirements -Precise measurement: features clear scales with high accuracy, aiding users in performing geometric measurements and drawings effortlessly -Portable design: the compact design of the ruler set makes it easy to carry and store, allowing for use anytime, anywhere Package list: 2 x triangle rulers 1 x protractor 1 x straight ruler