Review on 🔍 Horizon PRO-20B Precision Digital Jewelry Scale, 20g to 0.001g by Frank Garahana

I put 1mg, 3mg and 6mg weights on this scale calibrated with a precision laboratory balance. I placed them separately and this scale didn't even register them; it showed 0 with each of them. I did the same by placing one of the two 10g calibration weights that came with the scale. The scale has not moved from 10 gr. Then I put them all together and a few times it wouldn't move, and sometimes it showed a weight a few milligrams lower than it should. I don't know if it was just my scale or if this model is always inaccurate enough to weigh milligrams. I haven't tested it with heavier weights as I don't need it. Please tell me which scales for small scales are more reliable than this one. Thanks very much!