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It is made according to the lever principle, there is a small plate at both ends of the lever, one end puts the weight, the other end puts the object to be weighed, the center of the lever is equipped with a pointer, when both ends are balanced, the mass (weight) of both ends is equal. It is a common weighing instrument. Accuracy is not high, generally 0.2 grams. Load is 500 g.
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