Would you trust Chinese calibrated weights?

:open_mouth: did not knew that… :open_mouth:

Mechanical powder scales are rated as accurate to 1/10 grain…

Yep I talked to a gunnerd, look at post #16.
0.1 grain =0.006479891 grams
So I guess even if his scale is bit out of balance it will give a good possibility to check the accuracy of Chinese weighting tools.