Professional Design Drawing Jig 11 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 Template, Multi-Size Drawing Template, Ellipse Template, Multi-function Drawing Template, Geometric Drawing Template, Math Learning Template, Nut Template, Construction Template, Network Technology Template, Mechanical Model, Curve Template. 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 suit your needs, suitable for studios, ec...