30cm Triangular Architect Scale Ruler Aluminum Scale Ruler for Drafting, Small proportion, 501 Original

Features:1. Light, not easy to break, not easy to deform, smooth lines2. The scale is clear and accurate, with built-in scale, easy to carry3. Triple precision drawing, multi-functional, convenient for your life4. Printed numbers with high color contrast and easy to readSpecifications:Purpose: ideal tools for engineers, technical drawings and architectsSmall 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 * 20mm/12.64*0.79*0.79\\\"Notes:1. 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!2. Please allow 1-3cm measuring deviation due to manual measurement.Package Content:1 X Scale Ruler