30cm Plastic Scale Ruler. The 30cm Plastic Triangular Scale Ruler is a precision tool designed for architects, engineers, students, and professionals who require accurate measurements and scales in their work. Made from high-quality plastic, this ruler is both lightweight and durable, ensuring long-term use without the risk of warping or wearing down. Its triangular shape provides three different sides, each containing scales with different graduations to accommodate various types of technical drawing and scaling needs. This versatile tool is essential for drafting, drawing floor plans, creating blueprints, and executing detailed technical drawings. The 30cm length is ideal for most projects, offering ample space for measurements while still being compact enough for easy transport and storage in a toolkit or desk drawer. The clear markings on the ruler are easy to read, facilitating precise work and reducing the likelihood of errors. Whether you're a student learning the fundamentals of design, an architect working on detailed plans, or an engineer measuring components, the 30cm Plastic Triangular Scale Ruler is an indispensable tool that combines functionality, accuracy, and convenience in one package.