American Weigh Scales 14-Piece Calibration Weight Kit for Accurate Measurement of Small Items

S. PerronS. Perron: I was sceptic for the respect of the class claimed, but after checking on the lab with a scale 5 digits (did the measure twice), I confirm it‘s accurate as it should. At the end, certification has a price... Good purchase!

Canada on Mar 17, 2020

AndyN: Received promptly. Weights seem to be extremely accurate with exception of 20 and 10mgs. Please note that my scale is by no means professional - "Infiniti" so it could well be my scale. Honestly I do not care as I do not even use such a small weights and generally needed weights to calibrate and verify the scale itself once per a while. Unless you are in pharmaceuticals I would definitely recommend this weight set.

Canada on Aug 30, 2019

JEB-42: I purchased these weights to calibrate a scale. The accuracy of these units were important to be accurate to 0.001g. These were spot on from 50g all the way down to 50mg to 0.001g. If accuracy is important spend a little more and pick up this set. Other sets have not met my needs for precision calibration.

Canada on Sep 09, 2018

Paul: Good M2 class weights for their price I went with one M1 class weight and then used these to check accuracy at varying weights

Canada on Apr 24, 2018

elad: I don't have much experience with weighing extremely lightweight objects and amounts, so I got this calibration set to compare the test weights to other lightweight items and to hopefully be able to tell whether the digital scale I bought is displaying readings reasonably. The quantities and weights listed in the product description match the weights I received. The small set of thin square weights in the tiny little zip lock bag were an unexpected bonus as those weights weren't included in the description of the set at the time I ordered the set. The update number of items is appreciated and are useful to help make comparisons. I might try to find a secondary container for the mg weight set because using the zip lock bag will make it a little harder to separate the very small weights individually.
I measured each weight using the Frankford Arsenal digital scale that I bought to use while learning to reload ammmuniton. The following list shows the weight marked on the weight (eg 50g is the mark on a weight and after the equal sign I list the weight showed by the scale = 50.015). And the (/) means I weighed a different weight. The results are as follows:
50g = 50.015 / 20g =...

United States on Sep 20, 2017

Amazon Customer: Purchased for someone, I saw this and thought not the greatest quality and seems cheap.
However the person I got it for loves it. Says it's exactly what they were looking for.
And it came SUPER quick

Canada on Dec 19, 2016

GearFreak: This set of weights exceeded my expectations for accuracy given the price point. I will be the first to say that the case on this absolutely sucks. The holders for the round weights aren't terrible, but the spots for the square weights below 1g really need to have a better cover. The stock cover for the holders doesn't cover the entire opening. As such, the smaller weights (especially the ones below 100mg) are prone to escaping from their compartment and flying around the case. The bottom part of the case is made from two plastic pieces glued together, but there is a gap between them. When I first put this set of weights away, I didn't know about this problem. When I opened the box the next time, the 1mg weight was mysteriously gone, and some of the other weights were scattered around the inside of the box. Low and behold, the 1mg weight found its way into the very bottom of the box, between the two glued plastic pieces. The only way I was able to retrieve the weight is via the assistance of a strong rare earth magnet (prying the box apart would have worked as well). I suspect this is why some other reviewers are losing their smaller weights.

To avoid this happening again...

United States on Mar 26, 2016