Calibration Weights 210g,9 PCS High Precision Scale Calibration Weight Kit,1g 2g 5g 10g 20g 50g 100g Calibration Weight with Stainless Tweezers fo...

I have a digital scale that measure to the 100th of a gram, and although it's not a certified scale, it's the most accurate one that I have. When I put any of these weights on it, they check out to the 100th of a gram. For example, if I put the 100g weight on, it reads "100.00", or the 50g reads "50.00". This is the same case with all of them, even the little 1g weights. I was honestly surprised by this, I thought for sure I might see something like "100.02" or something, but they all check out to exact numbers. I am definitely pleased with this. This is a very worthwhile calibration set. Even thought it may not be on par with something for aerospace or high precision industry, depending on your needs, this is great option. After seeing the consistent accuracy of these, I would easily get them again.

I have a digital scale that measure to the 100th of a gram, and although it's not a certified scale, it's the most accurate one that I have. When I put any of these weights on it, they check out to the 100th of a gram. For example, if I put the 100g weight on, it reads "100.00", or the 50g reads "50.00". This is the same case with all of them, even the little 1g weights. I was honestly surprised by this, I thought for sure I might see something like "100.02" or something, but they all check out to exact numbers. I am definitely pleased with this. This is a very worthwhile calibration set. Even thought it may not be on par with something for aerospace or high precision industry, depending on your needs, this is great option. After seeing the consistent accuracy of these, I would easily get them again.

My scale shows some at weight and others slightly heavy and the 1g weight was missing.

My scale shows some at weight and others slightly heavy and the 1g weight was missing.

I tested these calibration weights on 2 scales: a small portable scale and my lab scale. All weights are accurate as marked except the 1 gram. It weighed 0.98 gm. Close enough for my uses. The case seems sturdy, and there is a foam strip on the top case lid. One thing to watch for, at least on my set: when pulling the top lid off, the 1 gram weight, being so light, tends to stick to the foam and falls to the floor. It's small and easy to lose. I'd get this set again if lost.