Multifunctional geometry measuting ruler math teaching aid doubles as straightedge ruler, empowering artist, architects, and enthusiasts to tackle complex diagrams and craft project Features clearly marking visible in low light conditions, great for homework, engineering drafting, outdoor activity, or technical drawing project Angles Measurement Tool crafted from ensures accurately measuring result and long time durability, solving traditional metal protractors deformation issues for math geometry drafting task Essential for students, teachers, and professional like engineers or architects requiring clear angular measuring tool in classroom, workshop, or creative studios 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, Manufacturer: Hrtyvhin