Measure Up to Excellence! 📐 High-impact aluminum construction ensures durability. Ideal for architects, engineers, and students alike. Three scales in one ruler for versatile measuring. Crafted for accuracy with laser-cut imperial prints. Quickly identify scales with vibrant color-coded grooves. Color-coded grooves 12" precision Durable aluminum The Nicunom 3 Pack Architectural Scale Ruler features three 12-inch triangular rulers made from high-impact aluminum, designed for precision in drafting and measuring architectural drawings. With durable laser-cut imperial prints and color-coded grooves, these rulers are perfect for professionals and students in architecture and engineering.