HORIZON 8 PCS 1000g Calibration Weight Set (10g, 20g,20g,50g,100g,100g,200g,500g) with Storage Case and Tweezers for Digital Scale Balance Science Lab Educational Weights

Good weight set and compact box for all.

Great weights at a good deal, if you require heavier weights for calibration. They appear to be accurate to at least a thousandth of a gram (1 mg). My only grievance is with the flimsy plastic tweezers. You can't pick up a 500 gram weight with these tweezers, and I wouldn't recommend using them with the 200g either. Other than that, I recommend them.

Perfect calibration weight set. Very good quality. Only disappointment is the box they come in was already broken apart into pieces by the time it arrived.

This is a compact weight set similar to other standard sets that I have. I am using this to confirm the accuracy of my digital kitchen scale to make sure I am getting the correct measurements.In order to confirm the accuracy, I weighed the first 5 weights on my precision jeweler's digital scale with the following results:Nom. Actual %Error (+0 / - See Below)10g 9.992 0.080%20g 19.995 0.025%20g 19.995 0.025%50g 49.985 0.030%

I really just needed another 500g weight to calibrate my scale, but this set was cheaper so I thought I would take a chance on it. The product is just as it appeared on the listing. Five of the weights (including the 500g) were right on the mark. Two of the weights were .1g over, but that is really insignificant so I'm very happy with the set. I would buy it again.

I wanted to check the accuracy of my kitchen scale. These weights are ideal for that purpose.

They work and are the correct weight. The inside of the weights are very rusted.

Setting electric scale!