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:Transparent-Material:Plastic-Size:16.00X3.20X0.10cm/6.29X1.26X0.04in-This Tool Set is perfect for students, teachers, math experts, architects, engineers, artists, designers at any level.-It’s a good helper for artists, engineers, designers, architects, students and others.-Multi-functional and versatile, it can be used for a variety of fields, such as construction, professional applications, architecture, engineering, school supplies, etc.-It will work well in architecture, score measurement, art design or drawing templates as school work.-Portable and light, easy to store, not taking up any space, thus you can store it in your stationery bag.Packing list: 4 x Sets of Rulers