Feature:1. The data is accurate, the scale is clear and responsive.2. Selected high-quality materials, more durable brackets with high-quality metal.3. Rugged and durable, the tray is made of drop-resistant plastic to avoid accidental damage.4. Streamlined design is more beautiful without affecting the function and avoiding injury to the hand.5. You can choose from 100g or 500g set to meet different needs.Specification:Item Type:Balance ScaleSet Type:500g Set/100g Set(Optional)Package List:500g Set:1 x Balance Scale2 x Tray1 x Tweezers1 x 10g Weight2 x 20g Weight1 x 50g Weight2 x 100g Weight1 x 200g Weight100g Set:1 x Balance Scale2 x Tray1 x Tweezers1 x 50g Weight2 x 20g Weight1 x 5g Weight1 x 10g WeightNote:Use and maintenance methods:1. When using the balance, it should be placed on the flat workbench.2. Move the cursor to the 0 point on the left end of the ruler: the pointer should be aligned with the center line of the header to obtain balance. Otherwise, the balance nut on the lever should be turned to adjust the balance.3. After the balance is adjusted, place the object to be weighed in the left disk, and add the weight from the big to the small in the right disk. Try to put the item and weight in the center of the weighing plate, when increasing or decreasing to the minimum. When the weight is still unbalanced, the movable code can be balanced. The mass of the object is equal to the sum of the mass of the weight and the mass of the travel code.4. After the weighing is completed, the travel code should be returned to the 0 scale and the weight should be put back into the weight box.