High Precision Laser Engraved Scale: Crafted from premium anodized aluminum, ensuring durability for lifetime use. Scale ruler features multiple scales for versatile applications, meeting the needs of discerning engineers Smooth & Comfortable Operation: Designed with precise markings and smooth edges to prevent hand injuries. Enjoy clear readings and accurate measurements with ease Versatile Design: This metric scale ruler offers 6 commonly used scales including Large: 1:100,1:200, 1:250,1:300, 1:400, 1:500 scales. Dual-sided markings allow for seamless measurement from either direction Portable & Durable: Compact at 30 cm in length, this sturdy and lightweight triangular ruler is convenient for on-the-go use and storage. Perfect for engineers, professors, hobbyists, and manufacturers Superior Accuracy: Upgraded triangular ruler with high precision, ideal for achieving the exact measurements required for your projects. A must-have tool for professionals seeking quality results