This balance features a 10 gram beam that helps teach the concepts learned when using more advanced mechanical weighing instruments such as a triple beam balance. It has a 2,000 gram capacity with a 0.5 gram sensitivity. Made of high-impact polystyrene plastic. Activity guide included. Comes complete with a 7-piece brass mass set: 2 x 50 gram, 2 x 20 gram, and 3 x 10 gram weights. Grades 4-10.