The Arda Profil 30cm aluminum ruler is the perfect compact and durable measuring instrument to carry in your pencil case or briefcase. Made of lightweight aluminum, it features a non-slip rubber grip to secure the ruler to the paper and a smudge-proof edge for marking with pens without smudging your work. The numbers and millimeters are laser-engraved, ensuring the metric scale won't fade with continuous use. At 30cm long, it fits perfectly into A4 notebooks, making it indispensable for students and professionals in office environments.