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, lightweighted design for effortlessly portability. 【Multiple Colour Options】Available in black, blue, Silver and rose red to cater to diversed aesthetic preferences. 【Optimised Width Design】Enhances stability, it facilitates secure gripping and drawing, ensuring comfortable operating across diversed drafting environments. 【Full-Length Practicality】With 15cm/30cm optional it accommodates most drafting and measurement requirements. Specifications: Specifications: Component: about Aluminum Size: 15cm/5.9in 30cm/11.8in Optional Color optional: Black/Blue/Rose Red/Silver Size: Standard triangular shape easy to carry and use, suitable for various drawing needs. Package Includes: 1PC Multifunctional scale triangular scale 1PC Chinese and English bilingual instruction manual note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution