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

Not very accurate and bad quality

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.

At last! The weight...um...wait is over! The 100-gram weight works just fine on this antique kitchen scale, but as everyone can see, I still have some work to do after a very inexpensive purchase! No more display failures in electronic scales here! One became more inaccurate as more weight was added, and the other has been good, but only lasted for about 20 years! An inherent fault in the good one's circuit design has also been discovered by many users around the world. However, this antique scale will last "forever"!

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

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%