【Package Contents】You will receive 4 rulers, all 30 cm in length. 【Nice Quality】The material of our ruler is made of good quality plastic, strong and durable, not easy to deform or damage. 【Two Scale Design】Ruler is desgin with centimeter scale and inch scale, can meet your different measurement requirements. 【Features】The ruler is transparent, and it will not block the sight when measuring. Plastic ruler can avert scratching the finger. 【Wide Application】The clear ruler is widely used in in schools, math classes, office, home etc, perfect for students, teachers, artists, architects, workers., Manufacturer: LAMXD