Accuracy & neatness in geometry has now been redefined with Youva Torus Geometry Box. The outer box is made of premium tin which is durable & convenient to use. All components are of high-grade material & quality. The box contains a 15 cm Ruler, a 180o Protractor, set Squares 600 & 450, a Compass, a Divider, a Pencil, Eraser & Sharpener. There is also a handy paper timetable in the box that you can use!