Product Description: Material:Plastic Multifunctional: Whether you are an artist, student, pattern maker or designer, this ruler is a good helper for your work or study; it helps to develop your own manual skills and imagination. Accurate and clear: all kinds of shapes can be drawn, the scale is clear, the sliding is convenient, the drawing is stable, it is not easy to be distorted, and it is easy to observe. Multi-function ruler: The multi-function measuring scale can draw the required graphics, such as: protractor scale, Y spool, function drawing slot, round hole with radius mark, X spool, polygon hole, circular arc, short line groove, active short ruler, Parallel mark, built-in triangle ruler, oval hole, straight edge, etc. A variety of patterns: 14 geometric figures of different shapes are placed on the ruler, which is very convenient to carry, which can meet the different needs of your daily use and is convenient for measurement. High-quality materials: use high-quality plastics. Lightweight, durable and easy to carry. Use transparent materials. When painting, don’t ignore some important figures or words.