• 20 cm parallel rolling ruler made of high-quality transparent plastic. • Multi-function tool ideal for technical drawing, engineering, architecture, and design. • Allows for drawing horizontal and vertical parallel lines with great precision thanks to its integrated roller. • Clear and legible metric scale engraved on the body for exact measurements. • Includes protractor functions and circle templates for greater versatility in work. • Lightweight and portable design, suitable for professional and school use.