High-Quality Materials: Made of high-quality PVC materials which is light, durable and easy to carry. The transparent material allows you not to ignore some important numbers or words when drawing. Various Patterns Ruler: 14 geometric figures of different shape are placed on a ruler, Such: Protractor scale, Y spool, Function drawing slot, Circle hole with radius mark, X spool, Polygonal hole, Circle arc, Short-drawn wire slot, Active short ruler, Built-in ruler, Oval hole, Straightedge, etc. Multifunctional Ruler: The multifunctional measuring ruler has a round hole per centimeter for drawing circles and ellipses; About 20 Elementary School Common Graphics can be drawn. You can draw the desired figure with a protractor, or you can draw arc curves, horizontal parallel lines, and vertical parallel lines. Have enough size for drawing. Fast, accurate, and no auxiliary lines Easy to Use: Precise and clear, the rulers are very easy to use. The scale is clear, the sliding is convenient, the drawing is stable, it is not easy to be skewed, and it is easy to observe. It can perfectly meet your different needs in daily use, and it is very convenient to measure and carry. Wide Range of Use: Whether you are an artist, student, pattern maker or designer, this measuring ruler is a good helper for your work or study. it can help develop your own manual skills and imagination.