1. According to the principle: electronic scale, mechanical scale, electromechanical combined scale, electronic table scale
2. Divided by function: counting scale, price scale, weight scale
3. Divided by purpose: industrial scales, commercial scales, special scales
4. Classified by placement location:
Desktop scale refers to an electronic scale with a full weighing below 30Kg
Platform scale: Refers to an electronic scale with a full weighing within 30-300Kg
Floor scale: Refers to an electronic scale with a total weighing above 300Kg
5. Classified by accuracy:
Class I: Special balance, precision ≥1/100,000, reference weighing instrument
Class II: High-precision balance 1/10 thousand ≤ precision ＜ 1/10 thousand precision weighing instrument
Class III: Medium-precision balance 1/1000 ≤ precision ＜1/10,000 industrial and commercial weighing instruments
IV level: Ordinary scale 1/100≤ precision <1/1000 coarse scale
