Maintain straight, accurate, and precise lines with this 50 cm transparent plastic ruler. For perfect lines in your art, design, mathematical calculations, or simply everyday notes, this transparent ruler is an essential for your stationary supplies set. It keeps lines straight and precise to a 1 mm degree, and the transparent plastic material allows you to see the work beneath the ruler, enhancing precision. The plastic material of this ruler makes it durable and resistant, so you can apply pressure with a pen while drawing and not leave any damage. It has a length of 500 mm (50 cm) and is suitable for a wide variety of purposes. It is essential for home, office, or school.