The Arda Profil 40cm aluminum ruler guarantees maximum precision and durability in technical drawings and school measurements. Made of high-quality aluminum, it features a non-slip rubber base to prevent unwanted slippage and specific edges for use with ink or fine-tipped pens without smudging. Its metric scale is laser-engraved, ensuring the absolute indelibility of numbers and millimeters even after years of intensive use. Presented in a practical blister pack, this 40cm ruler is an indispensable tool for geometry and architecture students and office professionals looking for a reliable and durable measuring instrument.