Triangular aluminum architect's ruler, metric 1:20, 1:25, 1:50, 1:75, 1:100, 1:125, standard approximately 30.5 cm, for architects and students

High-Quality Material: Made of high-quality anodized aluminum, corrosion-resistant, durable, and lightweight, it won't easily deform. The edges are chamfered to prevent accidental cuts. High Visibility: The crisp graduations and precise markings work well on any plane or surface; 3-sided metric scales: 1:20, 1:25, 1:50, 1:75, 1:100, 1:150. Laser Engraved: The markings on the ruler are laser-engraved for perfect definition. Very quick and easy reading without errors. These permanent markings and grooves won't fade or stain. With Protective Case: The triangular ruler comes with a reusable and unbreakable protective case, allowing you to take your ruler anywhere without damaging it. Wide Application: The multifunctional metal scale ruler can be used for cutting, measuring, professional drawing, and designing decorations. The perfect measuring tools for architects, draftsmen, engineers, teachers and students.