• Suitable for school physics and chemical experiments, an ideal teaching tool. • Achieve precise weight measurement based on the lever principle. • Use the tweezers to hold the weights, keep them clean and accurate. • Easy to operate and carry, 100% new and high quality. • The tray balance is mainly performed according to the Robway mechanism and the lever principle. • As a small indoor weighing instrument, it is easy to operate and carry. • Ideal teaching tool for chemical and physical experiments. • Maximum weighing: 200 g. • Division value: 0.2g. • Package weight: approx. 522 g/18.4 oz. • Package list: 1 Tray balance, 1 tweezers, 1 Weight 5 g, 1 Weight 10 g, 2 Weights 20g, 1 Weight 50g, 1 Weight 100 g.