Sturdy material: Advanced material composition provides hardness, rust resistance and durability, delivering long lasting and stable performance for a variety of applications. It is a reliable tool to support accurate measurements. Improved measuring precision: Designed to increase productivity, this triangular ruler features clear and accurate metric scales. It maintains accuracy after repeated use, reducing measurement errors and supporting reliable results across different tasks. visibility: Black and white contrast design makes letters and lines easy to read, enabling quick and accurate use by anyone. Suitable for desk work, model making, drawing and other detailed measurement tasks. Suitable for many occasions: Ideal for civil engineering, interior design, educational drawing and related fields. Provides stable operation and precision, with consistent quality to improve work efficiency. Portable and easy to use anywhere. Practical use scenarios: Ideal for civil engineering projects and site planning, for interior design and furniture layout prep, and for classroom drawing or model making tasks.