Widely use for in school classroom , drafting , and home crafting project , ensuring versatility across various setting Very suitable for students , teachers , engineers , and craft enthusiasts , these math measuting ruler meets the measurement need of both learning and professional environment Light in weight and portable , these drawing ruler is designed to be resistant to breaking , with clear , easy to read marking for accurate result These math measuring ruler features clear designs that allows for easy reading of measurements , available in four different color to cater to different drawing needs precise measurements with our 30cm Colorful Clear Ruler , crafted from plastics for durability, Manufacturer: HUAJINGKEJI