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Introduce elementary and middle school students to the science of metrology with this teaching tool! Features a pivoting beam that provides accuracy to 0.5 gram. The interchangeable, red, square pans are easily removable for pouring, cleaning, and storing. Students can measure the mass of small items, such as paper clips, marbles, and coins, as well as heavier objects, such as books, weighing up to 2,000 grams. Grades 4 and up
: An indispensable tool for the math classroom: measure a wide variety of items--from paper clips to books--with this easy-to-use balance