Premium Material: Our straight rulers are made of high-quality plastic with smooth edges and angles to help prevent finger scratches. Lightweight, durable, and resistant to breaking. Transparent Ruler: Measures 5.9 inches (15 cm). The transparent design allows clear visibility of objects, text, or numbers underneath. Its compact size makes it easy to carry and store in a pencil case or bag. 2-Sided Measuring Ruler: Features precise centimeter scales with standard numbers on one side and extra-large numbers on the other for easier reading and accurate measurement. Bright Color: Each ruler features a two-tone design with one half transparent and the other half colored. Reusable and resistant to deformation or damage. Package includes 3 straight rulers; color selection is not available. Wide Application: Ideal school supply for students and children. Suitable for math eon, classroom use, school, office, and home. Also great for measuring tasks by artists, designers, machinists, architects, engineers, and woodworking professionals.