Description This is a multi-purpose rolling ruler, which is made of plastic material, and it is sturdy enough to support your long lasting use. It is suitable for engineers, draftsmen, illustrators and designer, can definitely give you a good use experience, don't miss it.-drawing ruler Features -Color:Transparent -Material:Plastic -Size:30.00X6.50X2.00cm/11.79X2.55X0.79in -Size:15.00X6.00X2.00cm/5.89X2.36X0.79in -Made of good plastic material which is durable enough for your lasting use. Clear scale for easy to read. -engineering scale ruler -Can be used to measure angle and draw circle, arc, horizontal parallel lines, vertical parallel lines.-drafting ruler -Suitable for home and office, students and teachers using and so on. A great measuring tool for -Plastic Measuring Ruler Toolengineers, and more. - for accuracy, a good helper for your design and measurement.-Measuring Tool -Suitable for engineers,, and students, it will give you a good use experience.-Students Drawing Ruler Light weight, smooth and easy to draw, with clear scale, the parallel ruler is easy to observe.-multi functional activity measuring ruler Best for drawing, charts, angles, horizontal lines, circles, graphs, musical-note etc.-measuring plastic rolling ruler This rolling ruler is only suitable for use on surfaces with relatively large friction such as drawing paper and canvas, and not suitable for use on surfaces that are.-drawing design ruler There are various formulas on the roller, which can quickly in use.-multi-purpose parallel line drawing ruler An excellent universal tool for making technical drawings parallel lines, hatching, circles etc.-multi-purpose tool