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1

First weighing

When used for the first time, the reading on the scale contains the self weight of the scale body, and when the scale is turned off, it is weighed again.
2

When weight is called, why is it repeated several times

When weight is called, why is it repeated several times (a reasonable error of 1%. If not within the range of error, please refer to the following reasons)
Ground factor interference. The ground must be level and hard. As far as possible on the same floor or tile, splicing floors or tiles must be uneven, may affect the accuracy.