3000g / 1g, the error is 2g, weighing range: 3g-3000g

1000 g / 0.1 g, the error is 0.3 g, and the weighing range is 0.5 g to 1000 g

2000 g / 0.1 g, the error is 0.3 g, and the weighing range is 0.5 g to 2000 g