1.Scope of Application: Universal measuring tape, with the protractor to draw the required graphics, can also draw circular curves, horizontal parallel lines, vertical parallel lines, enough size drawing. 2.Perfect Gift: The plastic ruler is an ideal gift for friends, family and artists, the practical tool can bring them a lot of convenience and further enhance their creativity. 3.Clear Scale: Every centimeter has a round hole for drawing circles and ellipses, built in roller, clear scale, easy to slide, not easy to skew, easy to observe. Transparent material allows you to draw without ignoring some important figures or words 4.Applicable People: There are various formulas on the roller for quick calculation in use, whether you are an artist, student, pattern maker or designer, this measuring tape is a good helper for your work or study.