Math set features essential tools to let your students perform a variety of measurements in the classroom. Transparent protractor, ruler and triangles allow items to show through for precise measurements. Sharply defined graduations on the measuring tools prevent reading errors for accurate use. Plus, writing is simple with the pre-sharpened pencil, eraser and sharpener. Flip-open storage box keeps all of your tools neatly organized for safe storage between uses. Set includes a compass, divider, eraser, triangles, protractor, ruler and sharpener.