Not many people really need to measure to within 1mg (0.001g) but if you do you must be prepared to pay over $1,500 for the scale . This $20 scale is accurate at least 5 mg (176 million ounces) and probably a little better when it's fully aligned, what you're weighing is in the center of the bowl, the air in the room is still, that was new. calibrated and the device switched on for a few minutes. On the other hand, if you're happy with the 5-7mg accuracy, then just turn it on, place what you're weighing on the scale, and read. in situ (50,000 g) using another much more accurate (and expensive) balance. I like that the calibration weight has its own storage space on the scale and the scale is protected by a clear plastic flip-up cover. The supplied plastic measuring cup and tweezers (for the calibration weight - please do not use with your fingers as this will leave corrosive sweat) are of acceptable quality. All in all, as a research chemist who has worked with balances all my life, I found this instrument remarkable for its quality and incredibly low price.
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