- Practical ruler set of learning tools designed to cover daily study and life needs, combining a ruler and a protractor in one compact tool. - Size: about 18.5 cm; easy to use, simple to hold, and portable enough to carry in a bag or pencil case. - Clear, translucent design lets you see text, letters and numbers on the page through the tool, helping you read scales and align measurements more accurately. - Ideal for math at home and for students who are just starting to learn and draw math concepts. Use scenarios - Homework and practice at home: measure objects, draw straight lines, and practice angle measurement with a single, easy-to-use tool. - Learning in school or tutoring: introduce basic geometry concepts with a clear, readable protractor and ruler. - On-the-go learning: take it to the library, study groups, or after-school activities for quick measurements and drawing tasks.