- Set of 30 circular protractors made of durable plastic, each with a diameter of 10.2 cm. - Precise measurement of angles from 0 to 360 degrees, both from left to right and from right to left. - Includes protractors in light blue and red, colors sent at random for variety and easy identification. - Double scale in inches and centimeters, ideal for school, technical, and office work. - Perfect for measuring angles greater than 180°, making advanced geometry tasks easier. - Ergonomic and transparent design for clear and quick reading of values. - Essential tool for students, teachers, architects, and technical drawing professionals.