Review on High-Precision Milligram Scale: 50 x 0.001g for Reloading Gunpowder and Gemstones, 771 x 0.02gn Accuracy, Calibration Weight & Accessories Included, Multiple Units by Joseph Marquez

Although I don't work in a lab, I am an engineer and had a lot of lab experience in college. sensitive. This is the first inexpensive digital scale I've tried that can recognize and correct the readings when I add a small sheet of paper that weighs approximately 0.0025 grams (0.04 grains) while the 5 gram test weight is on the Libra lies. For reloaders, the scales may not be accurate to a core every time, but they are close. The one I have will repeat powder loads of +/- 0.05 grains, probably even slightly better. I'm almost certain that perfectly accurate scales would cost a lot more. Why not 5 stars? It would be nice if there was an option to run on electricity and battery. The reference weight of 20g (according to the manual) does not appear to be 20,000g.