<p>This aluminum triangular scale ruler offers a professional drafting tool for architects, engineers, and students. Its durable alloy construction and multi-scale design ensure precise measurements for a variety of projects.</p><ul> <li>Precision engineered with multiple scales: 1:20 to 1:600 for versatile drafting needs</li> <li>Lightweight aluminum material with a colorful, durable finish</li> <li>Raised edge and finger groove for smooth, safe cutting and measuring</li> <li>Triangular shape provides easy access to six different scales</li> <li>Available in both 15cm and 30cm lengths</li> </ul><p>Ideal for technical drawing, architecture, and engineering projects, this ruler is a reliable companion for accuracy and durability.</p>