Description A Practical Ruler Geometry Set is durable, the Ruler will not bend or flex during use, and the ergonomically designed Ruler head is comfortable to hold. Universal holder Ruler work with any standard sized pencil or pen. Also, the rulers, triangles and protractor feature a graduation for easy identification along. With a durable storage box, it is easy to carry and store. Features -Color:Blue-Material:Aluminum Alloy-Size(Ruler):21.00X2.30X0.10cm/8.25X0.90X0.04in-It can be used in school, office, home or at work, anywhere and whenever you need to use it. -Fine craftsmanSHLP and premium material ensure that it won't fade or rub off during use. -Suitable for art design, score measurement, building templates, architecture, network technology, and drawing. -Ergonomically designed anti-skid Ruler head makes it hold comfortably. -You can easily buy this set of practical Math Geometry Kits at an affordable price. Packing list: 1 x Ruler2 x Triangle Rulers1 x Protractor