Whether you're working to a school project, drafting blueprints, or simply need precise measurements for home or office tasks, this drawing ruler kit is a nice choice. The geometric protractor and ruler are particularly useful for creating accurate angles and lines, making it an essential tool for engineers, architects, and students alike. 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 -Comprehensive kit: essential tools, triangle ruler, protractor and straight ruler for your geometric needs -Sturdy construction: crafted from aluminum alloy, these tools are built to last, offering durability and resistance to wear and tear -Versatile use: ideal for students, educational institutions, households, and office environments, providing solutions for various geometric tasks -Accurate readings: the rulers feature precise and clear markings, ensuring accurate measurements and aiding in detailed geometric drawings -Easy to carry: designed for convenience, the compact and lightweight ruler set is easy to transport and store Package list: 6 x triangle rulers 3 x protractor 3 x straight ruler