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