30cm Architect Triangular Scale 3 Sides Straight Ruler for Draftsman Silver, Huge comparison, 501 Original

30cm Aluminum Alloy Architect Triangular Scale Ruler Measurement Tools 3 Sides Straight Ruler for Student Draftsman Engineer SilverFeature:1. Lightweight, not easy to break, not easy to deform, smooth lines2. The built-in scale is clear, accurate and easy to carry3. Drawing paper with triple precision, multi-function, bring convenience to your life4. High color contrast, easy-to-read engraved numbersUse: Ideal tool for engineers, technical drawings and architectsSpecification:Small scale: 1:20/1:25/1:50/1:75/1:100/1:150Large scale: 1:100/1:200/1:250/1:300/1:400/1:500Material: aluminum alloySize: 321*20*20mmNote:Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!Please allow 1-2cm measuring deviation due to manual measurement.Package Content:1*Scale bar