Premium Material: Our straight rulers are made of high quality plastic, the straight edges and angles are smooth, which can avert scratching the finger. Lightweight, durable and not break easily. Transparent Ruler: Measures range is 5.9 inches/ 15 cm. Through the transparent ruler, you can clearly see the measured objects, words or numbers below. The portable size is very convient to carry and stored in pencil case or bag. 2 Sided Measuring Ruler: Designed with precise centimeter scales, and general size number on one side and extra large number on another side, help you to measure objects and see the scale more conveniently. Bright Color: Each plastic ruler is designed with 2 colors, half is transparent and other half is coloured. Reusable and not easy to deform or damage. Package includes 3 pcs straight rulers, colour choice not possible. Wide Application: It is useful school supplies for students and kids. Suitable for math education, classroom teaching, class, school, office, home etc. And also ideal for measuring by artists, designers, machinists, architects, engineers and woodworking.