1. EASY TO IDENTIFY SCALE: Unique rotating device and transparent design allow for effortless measurements, with numbers displayed on the side alongside a protractor. The black scale ensures quick and accurate readability. 2. CIRCLES WITH MULTIPLE RADII: Features 16 small circles for drawing patterns with radii of 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12.5 mm, and 15 mm, catering to diverse needs. Create a circle in just ten seconds. 3. 4 RANDOM COLORS: Crafted from quality, durable thick plastic, the protractor is resistant to breakage. Measuring 11.5 cm / 360 degrees with a round shape, this universal plastic protractor comes in four random colors: blue, red, green, and yellow. 4. EASY TO CARRY: Compact enough to fit in a backpack or sit neatly on a desk, this tool is convenient for portability and storage. Ideal for both teachers and students, it is also compatible with compasses, rulers, and other drafting tools.