Features: Our architectural scale ruler is made from aluminum alloy, lightweight, durable, and resistant to fading and breakage, making it easy to carry and store. Clear scale markings ensure precise and accurate measurements. The 300mm triangular architectural scale ruler is designed for drafting and measuring architectural drawings such as floor plans, blueprints, and construction projects. This ruler includes commonly used scales: 1:20, 1:25, 1:50, 1:75, 1:100, 1:125, 1:200, 1:250, 1:300, 1:400, and 1:500. Scales are clearly labeled for easy reading from left to right or right to left, eliminating guesswork during measurement. Sharp graduations and precise markings provide high accuracy, making this ruler ideal for professional use. A practical measuring tool for architects, engineers, drafters, and students. Multipurpose drafting ruler suitable for a variety of design and technical projects. Specifications: Color: Golden; Black Material: Aluminum Alloy Size: Approx. 2.5 x 32.2 cm (0.98 x 12.67 in) Weight: Approx. 105g Package Includes: 1 Piece Drawing Ruler Note: 1. Please allow 0–1 cm error due to manual measurement. Ensure you are comfortable with this before purchasing. 2. Due to differences in monitor displays, the actual color may vary slightly from the image.