ACCURATE MEASURING TOOL -- This jumbo Straight Edge measures 24” and 60cm. Sides are scaled in 1/4” and 1/2cm increments TEACH STEM -- This jumbo tool ensures easy demonstration of math, engineering and geometry concepts. Use it to teach measurements, angles and shapes PRECISE DRAWING TOOL -- Straight edges are perfect for art which requires measurements. This handy, magnetic measurement tool is useful for creative classrooms and engineering offices HANDY FOR HOBBIES -- Add this jumbo resource to your craft room to measure fabric, yarn, ribbon or construction paper. Stick it to your steel refrigerator or toolbox for measurements on the fly! INCLUDES A HANDLE -- Grasp this oversized tool with ease. This Straight Edge includes a large handle, which makes it easy to hold while drawing COMPLETE YOUR GEOMETRY TOOLBOX -- Pair this straight edge with other LEARNING ADVANTAGE Dry Erase Measurement Tools: Protractor (7591), Compass (product # 7593) and Triangles (product # 7595, 7594)