Design features: colorful transparent cube design, rich color gradient, beautiful and unique. The ruler length is 20cm, suitable for a variety of measurement needs. Material characteristics: Acrylic material is light and sturdy, straight edge shatterproof ruler has no sharp edges, not easy to scratch hands, not easy to break, easy to hold and draw lines. Applicable people: suitable for students, adults, whether it is school, classroom or office. Functional use: The rich ruler set can be given as a practical gift to students, teachers, designers, family, friends, etc. Clear scale: The transparent color of the colored ruler allows you to clearly see the numbers and letters on the page, thereby relieving eye fatigue.