17 Pcs Calibration Weights Set, 10mg-100g Grams Weights Calibration, Precision Stainless Steel Calibration Weight Kit, Scale Calibration Weight Kit for Digital Balance Scale, Jewellery Scale

great product

So, I'm sort of a "measurement" guy, and that's why I wanted these to verify the scale (that I bought on the same order) was accurate. Both the scale and this weights set, worked perfectly. I've since verified the other 3 digital scales that I have. I was surprised how accurate these scales and the weights are. It was a good price. The solid weights with the ball on the top were easy to grasp and use. The box they come in looks durable and well built. I only have one picky issue. There are the smaller "mg." weights which are basically cut from a sheet of aluminum (they seem to be pretty accurate from what testing I could do.) . . . but they are difficult to grasp as "tiny flat sheets", so I bent the corners up on the sheets so that I could grasp them with the enclosed tweezers (which seem fine). I can usually grasp the tiny bent corners to pick them up (I usually have a better idea to pass on, but that idea hasn't jumped out of my brain yet. . ) The tiny ones work in the end. I'd like to have the little clear plastic cover on the tiny weights be a little more secure because it seems to "open" when you move the box around and then the "tiny ones" run around loose in the box. I don't plan on using the "mg." weights much, so I just taped the "tiny one cover" on one end to make it more secure. I highly recommend this product (even with my picky comments).

These appear to be good for checking a 10mg scale. The different weights add up as they should. 10g+20g+20g indicates the same as a 50g weight. The smallest weights don't fit in their wells correctly & need a little modification with a pair of pliers. I don't have a 1mg scale, so I can't comment on the accuracy of the smallest weights in the set.

Well, first of all I cannot speak for the accuracy of the weights. It is surprising that there is no form of document included attesting to the accuracy of the weights. There's not even I little slip of paper stating "Inspected by..." So I'm accepting the accuracy as stated by the manufacturer. The video shows a scale I was checking and not once did the displayed weight deviate from the calibration weight by more that 0.1 gms. Was it the scale or the weights? Based on the performance of other scale features I would put any inaccuracy on it and not the weights. The tweezers are really cheap and distracting from the rest of the set. The plastic is too thick and makes picking up the smallest weights difficult as you cannot grab the bent corners tightly snuggled into the depressions. The video shows even picking up the 1 gm weight by the knob was slippery. Surely the manufacturer could have included some better performing and better looking metal tweezers. I considered dropping a star due to the cheesy tweezers but it's not like I use them all the time.

It is very accurate

Does exactly what I needed. Most inexpensive scales only go down to around 40-50 mgs... this set allows you to go as low as needed. Great price for all the weights & nice, sturdy box to keep them in. Recommend!

If you're like me and need accuracy in your kitchen scale—and are always wondering if it's really accurate—then these are your Huckleberry. The weights are easy, accurate and jibe with several scales I've tested. They're also a bargain for the piece of mind they give you.

I was hoping for a precise calibration weight set, but unfortunately, the smaller weights are not accurate. The two 20mg weights are showing 23mg and 24mg on three different scales. If the issue were with the scale, both 20mg weights should at least show the same number, but they don’t. On the plus side, the 100mg and heavier weights seem to be accurate, however I bought it for the smaller weights. If you need high accuracy for smaller measurements, look elsewhere.

Belle finition et précision des masses correctes (vérification sur balance de précision).

Some regrets that I didn't go up in price a bit because the largest weight is incorrect, only by a couple of grams but since accuracy is what I wanted it sucks a bit. If purchasing for professional use but a better set.

Personnel

I grind .07gr

This product came with 7 pieces missing