Wide Application: Math geometry tool set are useful tools which can be applied , school and office for architects, engineers, artists, designers, students, teacher and so on. Practical Compasses Set: 2 different style compasses can satisfy most needs of drawing circle, metal compass is sturdy and durable, not easy to bend or break during use, and the ergonomically designed top of the compass can provide a comfortable grip for easy control, the related accessories such as pencil, lead refills and eraser more convenient to use. Transparent Rulers: The ruler, protractor are made of high quality material, translucent color allows for a clear view of numbers and letters on the page; With the clear mathematics ruler, you can measure an object . Easy to Carry: Student compass geometry kit is designed with shatterproof storage box for easy storage of tools; has a compact size, and there is a hook on its top, which can be hung and stored without taking up too much space. colour:Blue Material:Metal + plastic Package Contents: 1 x Shatterproof Plastic Box 2 x Graphic Compass 2 x Triangular Rulers 1 x Straight Ruler 1 x Protractor 1 x Pencil 1 x Pencil Lead Refills 1 x Eraser Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.