Features: This multifunctional set square protractor geometry measuring tool delivers precisely drafting with clear construction featuring centimeter and angles scales and precisely measuring markings for effortlessly technical drawings. Integrated parallel rulers and 45°/90° angles guides simplify geometric constructions. Enhancing your these drafting efficiency with these professional geometry drawing and measuring tool. Suitable for architecture students completing technical drawings, engineers drawing precisely schematics, and artists crafting lined illustrations requiring measurement accuracy. Widely used for classroom geometry lessons, architectural drawing, engineering drafting, woodworking, sewing, art craft project, and professional engineering diagrams requiring precisely angles calculations. Crafted from from water resistant pp, these set square with angles-measuring instrument multifunctional geometry measurement tool maintain calibration integrity through repeated use in academic, artistic, and technical environment. Specifications: Color: Clear, Yellow, Red Component: Plastic Size: Approx. 156x110mm/6.14x4.33in Weight: Approx. 40g Package Includes: 10Pieces Set Square note: 1.Please allow 0-1cm error due to manual measurement. Be sure you donot mind before bid. 2.Due to difference between different monitors, the picture may not reflect the actual color