➤ 【Various Styles & Colors】This multi-functional drawing ruler has two styles , A and B, and two colors are blue and transparent for you to choose from. ➤ 【Complete Functions】The multi-function ruler can not only measure angles and draw plane drawings , but also draw three-dimensional diagrams and parabola to meet any drawing needs of you. ➤ 【Practical Measuring Tool】This ruler will bring you a different experience, accurate scales , convenient measurement, a variety of graphics, allowing you to design your own pictures independently. ➤ 【Ingenious Design】The drawing ruler adopts a rotatable and arc design , which makes drawing more convenient and not easy to hurt your hands. It will bring you the best experience. ➤ 【100% Guarantee】If there are any product quality problems, please feel free to contact us for help and we will get back to you in time .