I bought this micro scale to weigh Indian Pharmacopoeia drugs I need to take to the hundredth of a gram (because I'm reach of MS and that I am Western treatments more disabling than anything else) which purports in powder form. Before that I had checked the calibration was just by comparing the weight of my covenant on this scale and on that of a jeweler. Result balance this gave me a weight of 1.21 g for my alliance while the jeweler showed 1.22 g. I accept without blinking away. And that may be because there was this gap that I did not put 5 stars.