Features: 1.Premium material: Made of high quality metal+reusable plastic material, durable and long lasting, not easy to fade.2.Easy to Carry: Come with a storage case, protable and keep organized, anti lost.3.Wide Application: The architectural scale ruler is suitable for architects, engineers, draftsmen, builders, roofers, teachers and students, etc.4.Ergonomic design: greatly improves the safety and comfort of using the compasses, which work with pencils and leads, thus ensuring that users complete math tasks or construction plans with high efficiency.5.Ideal Gift:It's also a perfect gift for your kids and friends,easy to take to class and to store in the classroom and at home. Just choose it as school season gift or Christmas gift. Notice: Please allow 1-3cm deviation due to manual measurement Actual color may be slightly different from the image due to different monitor and light effect Material:Metal+Reusable Plastic Size:as shown