Tray Balance is mainly made according to Robway mechanism and lever principle. As a small indoor weigh instrument, it is featured with easy to operate and carry. Ideal teaching tool for chemical and physics experiments. _x000D__x000D__x000D_Features: _x000D_1. 100% brand new and high quality. _x000D_2. Achieve precision weight measurement based on lever principle. _x000D_3. Use the tweezer to clamp the weights, keep them clean and accurate. _x000D_4. Easy to operate and carry. _x000D_5. Suitable for scholastic physics and chemical experiments, an ideal teaching tool. _x000D_ _x000D_Specification: _x000D_Max Weighing: 200g _x000D_Division Value: 0.2g _x000D_Package weight: Approx. 522g / 18.4oz _x000D_ _x000D_Package list: _x000D_1 * Tray Balance _x000D_1 * Tweezers _x000D_1 * Weight 5g _x000D_1 * Weight 10g _x000D_2 * Weight 20g _x000D_1 * Weight 50g _x000D_1 * Weight 100g 11. 100% brand new and high quality. 22. Achieve precision weight measurement based on lever principle.? 33. Use the tweezer to clamp the weights, keep them clean and accurate.? 44. Easy to operate and carry. 55. Suitable for scholastic physics and chemical experiments, an ideal teaching tool. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Dadangjia