This handy, heavy-duty scale is a fantastic STEM teacher resource for classrooms and science labs. With a large, clear digital readout and a TARE button, elementary school students can learn and practice simple conversions between grams, pounds and ounces with this durable scale. Includes a mode button for simple conversion between grams, pounds and ounces. Capacity 500 grams/ 176.4 ounces; accuracy 1 gram/0.05 ounces. Plastic. 7" x 9 1/2" x 2" Requires 2 "AA" batteries, included.