Multifunctional set triangle: this set square set contains 4 pieces 15 cm set square and 2 pieces 20 cm set square. It is used not only as a triangle, but also as a protractor. In addition, the set square itself has a parallel scale line. With this multifunctional set square, you can quickly measure lengths and degrees and even draw parallel lines. With handle and more precise scale: the scale lines and fonts of this set square for school use UV printing technology, making the precision of the set square more accurate. The great thing is that the set square has a small and removable handle. And I trust that you will find it comfortable. Not easy to break: compared to other plastic set squares, this set square set made of thickened plastic is not easy to deform and break. The corners of the set square are curved, which can effectively prevent the set square from scratching the skin and effectively protect the safety of the child. Portable and lightweight: this set square with handle is lightweight and takes up very little space. You can put it in your bag and take it with you at any time. Thanks to its precise standards, this geometry set is not only suitable for teachers and students. It is also suitable for designers or engineers. Clear scale line: the set square set is made of pure and transparent plastic material to easily read the data. And the scale line and fonts have a black design style, which is more visible, facilitates reading each number and reduces eye membrane fatigue.