Features: Angles Measurement Tool crafted from plastic ensures accurately measuring result and long time durability, solving traditional metal protractors deformation issues for math geometry drafting task. Light weight design with smoothly rounded edges eliminates sharply hazards while maintaining portability, great for students and educators needing safe, easy to carry math geometry tool accessories. Essential for students, teachers, and professional like engineers or architects requiring clear angular measuring tool in classroom, workshop, or creative studios. Features clearly marking visible in low light conditions, great for homework, engineering drafting, outdoor STEM activity, or technical drawing project. Multifunctional geometry measuting ruler math teaching aid doubles as straightedge ruler, empowering artist, architects, and enthusiasts to tackle complex diagrams and craft project effortlessly. Specifications: Component: Plastic Color: White, Redness Size: Approx. 19.2cm/7.56in Weight: Approx. 35g Package Includes: 1Piece Angles Measurement Tool 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