Features: 【Precise Graduation】 The triangular ruler employs clear engraved technology, ensuring clear and easily readable graduations for enhanced measurement accuracy. 【Lightweight Aluminium Alloy Construction】Crafted from high-strength aluminium, the entire unit weighs approximately 90 grams for effortless portability. 【Multiple Colour Options】Available in black, blue, and red to cater to diverse aesthetic preferences. 【Optimised Width Design】 Measuring 23mm wide for enhanced stability, it facilitates secure gripping and drawing, ensuring comfortable operating across diverse drafting environments. 【Full-Length Practicality】 With a total length of 320mm, it accommodates most drafting and measurement requirements. Specifications: Component: about Aluminum Size: 320mm/12.59in in total length, 23mm/0.9in in width Properties: Color optional: Black/Blue/Red Technical parameters: Weigh about 90grams; engraved scale, clear and wear-resistant; For Architectural drawing | Art creation | Student learning Package Includes: 1PC Triangular ruler engraved drawing scale note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution