Grades 3 & up. All-purpose balance provides accurate measurement of capacities to 2000g (readable to 1g). Molded from high-impact styrene, this durable unit features a zero adjust knob and two removable 10 cm square pans. Includes 8-piece brass mass set: 50 gram, 20 gram, 10 gram, 2 x 5 gram, 2 x 2 gram, and 1 gram weights and Activity Guide.