The ruler is made of acrylic for easy measurement. The case protects all tools and stores them in one spot on a backpack or table for easy portability and storage. Convenient and easy to apply to draw precise patterns, and can also accurately measure the length of things. The math ruler is given as a present for students to start math learning and drawing. Features -Color:Multi -Material:Acrylic -Size:15.00X1.00X1.00cm/5.89X0.39X0.39in -Size:20.00X1.00X1.00cm/7.86X0.39X0.39in -Size:30.00X1.00X1.00cm/11.79X0.39X0.39in -It can be used in office, home or at work, anywhere and whenever you need to use it. -Fine craftsmanship and good 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 design can give you good usage experience and it can be your good helper. -You can easily this set of practical Math Geometry Tool with . Package list: 3 x Rulers