Almencla 2 Pieces Large Triangle Ruler Clear Scale for White Board Office Black Board

[Math Teacher Aids]: Large Triangle Ruler for geometry drawing and math lessons, suitable for classroom, school, or office [Easy to Use]: Teaching ruler is designed with a removable handle, lightweight, and easy to hold, making it an great drawing aid for instructor [Widely Used]: Math geometry teaching ruler is an essential tool for architects, engineers, artists, designers, instructor, etc [Material]: Drawing math geometry tool is made of premium PP material with high flexibility, sturdy and wear resistant, not easy to deform, smooth surface, will not scratch your hand [Clear Scale]: Math geometry ruler has a clear scale, easy to measure and read, suitable for chalkboards, whiteboards, erase boards, and more Size Chart: 36.5cmx36.5cm/14.37inchx14.37inch 29.5cmx51cm/11.61inchx20.08inch Package Includes: 2 Math Geometry Straight Triangle Rulers Note: Please allow slightly errors due to manual measurement and different monitors.