Professional design drawing template 10 sets (complete), made of high quality plastic, durable, not easy to break, the corners of the ruler are designed with curvature, not easy to hurt your hands, the ruler uses a lighter green, complete set meets all drawing needs. contains: multi-size circular drawing templatemulti-size ellipse drawing template template multi-function drawing template geometric drawing templatemathematics learning model nut model construction model network technology model mechanical model curve model. Widely used: These templates are suitable for building architecture planning, mathematical geometry, illustrations, score measurement, jewelry design, mechanical design, electronic information drawing , etc. Each ruler has different patterns and scales to meet your needs, suitable for studios, schools, offices, homes, etc. Washable: These drawing templates are all made by professional stencil printing process. There is no case where the scale blur disappears. It can be washed with water, with clear carving, long service life and complete collection. It is a very precious gift.