Features Accurate and Professional: This mechanical tray balance scale adopt high precision sensor system, it has 0.001g accuracy so it is extremely precise, and provides you with a accurate result from 0.001g to 50g. Measurements: The lab tray balance scale includes all the necessary weighing unites: g, oz, ozt, dwt, ct, gn. Set the scale to your desired measurement by pressing the mode button. Multiple Functions: This Mechanical Tray provides an accurate count and tare weighing function ensures more precise result. Wide Application: The postal scale is suitable for scholastic physics and chemical experiments, an ideal teaching tool. Also can be used as jewelry scale, powder scale, carat scale and more. Compact Size: The compact and lightweight design of this mini scale makes it easy to carry around in your pocket or keep on your desk. It also easy to operate and has clever windshield technology to avoid external disturbances. Specification: Max Weighing: 200g Division Value: 0.2g Package weight: Approx. 522g / 18.4oz Package list: 1 * Tray Balance 1 * Tweezers 1 * Weight 5g 1 * Weight 10g 2 * Weight 20g 1 * Weight 50g 1 * Weight 100g Package List