High Quality Materials: Our roller rulers are made of high-strength plastic, convenient and durable, but also lightweight, very compact and lightweight, so you can carry and use them with you whether youre working in the office or outdoors. field work trips. Scope: Whether you are an artist, student, designer or architect, this rolling ruler is a good helper for your work or study. It can help different groups of customers develop their surveying and mapping skills and spatial imagination to meet different needs. Dual Function: The plastic measuring rolling ruler differs from ordinary rulers in that it has both a scroll rule and a balance rule with two properties. It can not only draw smoothly, but also accurately or move quickly and steadily, which ensures that the drawing is fast and efficient. Unique Design: Each centimeter of the ruler has a round hole for easy marking, and the roller has different formulas to help you quickly do your calculations during use. The most important thing is that our rolling ruler is made of transparent material, which allows you to draw without overlooking some important shapes or texts. Versatile: Our rolling ruler makes it easy to draw lines horizontal and vertical parallels, draw circles up to 4 cm in diameter and use the built-in protractor to draw angular and sectional lines, as well as squares, quadrants. , and other geometric shapes.