For Teaching: This triangle ruler's extra-large design with a 32.5cm base and 23cm side makes i t ideal for classroom demonstrations, visibility and accuracy during architectural drawing lessons and fostering an engaging environment for both teachers and students alike Versatile Measuring Solution: The combination of a set square and a transparent protractor provides functionality for measuring both length and angles,streamlining workflows for architects,crafters,and hobbyists engaged in intricate design or layout activities requiring meticulous attention to detail Precision Drawing Support: The triangular ruler's secure grip and flexible movement are complemented by a red handle,providing stability and accuracy when drawing lines or shapes,catering to professionals and hobbyists engaged in intricate design or measurement tasks Surfaces Adaptability: Designed to perform seamlessly,the drafting triangle provides excellent functionality with its clear ruler body and markings, reliable performance across various materials like white paper or shaded boards without compromising precision Durable ABS Material: The drafting triangle ruler,crafted from thickened ABS, outstanding resistance to high-frequency classroom wear while meeting teaching demonstration standards,making it ideal for educators and students who require reliable tools during daily lessons and presentations, Manufacturer: WDWDW