Handheld Gold Miner's Balance Scale with Weight Set Solid brass with a certified capacity of 3.5 ounces (100 grams) Bowls measure 3 inches (7.6 cm) in diameter Balance arm is 5 1/4 inches (13.3 cm) long Comes complete with five brass weights, each weighing 1, 2, 5, 10, and 20 grams A needle indicates when the weights of the two bowl's contents are equal