Mathematical Geometry Ruler Large Size Large Digital For Drawing Engineering Teachers 60 Triangles Description: [Math Teachers Help]: Large size ruler for drawing geometry and math lessons, suitable for classroom, school or office. [Large Numbers]: The mathematical geometry ruler has clear large numbers, easy to measure and read, suitable for whiteboards, dry erase boards, erase boards and more. [Easy to Use]: The teaching ruler is lightweight and easy to hold, perfect drawing aid for teachers. [Material]: The mathematical geometry drawing tool is made of PP material, strong and wear-resistant, not easy to deform, will not scratch your hand. [Widely Used]: Mathematical geometry teaching materials are essential tools for architects, engineers, artists, designers, teachers, and more. Size Chart: Length: 50 cm or 19,69 inch The package includes: 1 Ruler of Mathematical Geometry