Built to last: Unlike engineering rulers with printed markings, our engineering scale is made of solid anodized aluminum. 100% laser etched markings for absolute precision and accuracy. Quality and Chamfered Edges: New updated Triangular scale with chamfered edges, giving you a safety guarantee. Every design deserves the quality and precision that the triangular Architect Scale can provide a lightweight and durable feel making it easy to use for any project. Constructed of high-grade anodized aluminum this ruler provides which will last a lifetime. All-in-one scale: Cyleibe metric scale ruler includes 6 of the most commonly used scales: 1:20, 1:25, 1:50, 1:75, 1:100, 1:125. No need to waste time figuring out how to measure each increment. Scales labeled two ways to be easily read from right to left or left to right. Wide application:Length: 30cm, Weight: 100g; Easy to carry and store. A useful measuring tool for any project, ideal for Architects, Draftsmen and students.