Precise Scale: the scale is fine and clear, whether it is angle measurement or length measurement, it can provide accurate data to ensure the accuracy of drawing and measurementMulti-function in One: it integrates multiple functions such as protractor, ruler, triangle ruler, etc. to meet various needs such as drawing and measurement, making learning and office more efficient, simplifying your toolbox, meeting the needs of multiple independent tools, and providing excellent measurement experience anytime and anywherePortable and Easy to Store: the overall size is small (8.54 3.31 inches/21.7cm8.4cm), does not take up space, and is easy to carry and store; Whether it is school, office or going out, it is suitable for unique design, easy to hold and operate, and not easy to get tired after long-term use, which improves the use experienceMaterial: made of transparent plastic material, it is strong and durable, not easy to wear or break, and can be used for a long timeWide Range of Uses: whether you are a student, teacher, engineer, designer or architect, this ruler set can be used in a variety of settings - office, school, studio and home; Its versatility makes measuring and creating easy, meeting a wide range of your needs