Size - Measuring range: 12 cm System: Metric Minimum scale: 1 mm Thickness: 0.8 mm Finish: Laser engraved The office ruler is made of aluminum alloy, which is rust-proof, corrosion-resistant, and not easily broken. It is durable, sturdy, and has a shatter-resistant design for long-term use. uxcell Straight Ruler 12 cm Metric Aluminum Alloy Ruler Double-Sided Scale Hollow Design Bookmark Measuring Tool for Children's Study Classroom Office Silver Tone ✼••┈┈┈••✼••┈┈┈••✼••┈┈┈••✼ \ ❤️ For details on special offers, see profile ❤️ / ◎ Follow & bundle discounts available ♪ ◎ Immediate purchase OK, all items free shipping ♪ ◎ Please check the actual product photos for the condition of the items. #Tamako☆'s products are here (✨New products are being added one after another✨) If there are any defects, please be sure to contact us BEFORE evaluation! We do not handle issues after evaluation. We are committed to a safe and secure transaction for both parties ❤️ ┈┈┈┈┈┈┈┈┈┈ ///008-38-07