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 you 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 working with pencils and leads, thus ensuring safety , that users complete math tasks or blueprints with high efficiency. 5. Ideal gift: It is also a perfect gift for your kids and friends, easy to take to class and store in classroom and home. Just choose it as a school gift or Christmas gift. A notice: Please allow 1-3cm differs due to manual measurement Actual color may vary slightly from the picture due to the different monitor and light effect Description: Material: metal + reusable plastic size: as shown color: random contains: 1 set x Math Geometry Kit