HFS(R) Calibration Weight Set 1000g with Case and Tweezers for Digital Scale, Gram Scale-M2 Class Precision 8pcs 10g,20g,20g,50g,100g,100g,200g,500g

⭐⭐⭐⭐⭐ The HFS(R) Calibration Weight Set is an exceptional tool for anyone needing precise weight measurements for calibration or testing. The 1000g weight is impressively accurate and comes in a well-designed case that keeps everything organized and protected. The weight itself is solid and robust, providing reliable performance for ensuring the accuracy of scales and other measurement instruments. The case is durable and compact, making it easy to store and transport the weights safely. For professionals and hobbyists alike, this set delivers the precision and quality needed for accurate calibrations. If you require dependable weights for your measurement tasks, the HFS(R) set is a top-notch choice. Highly recommended!

Good product

In all honesty it's a really good bang for your buck for what I use them for the weights work perfectly. The tweezers that come with it or kind of useless they're just too chintzy and you can throw those in the trash. For the price I'm not sure exactly what someone is to expect, it's basically a standard case to hold the weights which to me is no big deal this item was a great buy and a great value for all the different weights that come with it. The scales that we use only go to the hundreds so anything smaller than that doesn't necessarily matter to us.

Some oil or other marks on some of them, but this is a $20 set. They seem more accurate than my kitchen scale can measure. I will use them to calibrate my scientific scale. If you're reading Amazon reviews to determine if standards are good enough for your purpose these are good enough. If you bought a scientific scale because you needed a scale that could do tenths of a gram for pinewood derby weights like me, this is a good set for calibration as well as using for a lesson on weights, measures, standards, accuracy, precision, and taking measurements for lab purposes.

very good

A very nice set of scale weights. I tested each piece on a very sensitive digital scale and the numbers were spot-on. The blue plastic case works well too. Great value.

Good buy, works great, easy to use, true to weight

Please consider the price of this item as you read the following review. Using a Radwag 82/220R.2 Analytical Balance calibrated with an external 100 g ASTM Class 0 reference calibration weight (+/- 130 ug), I tested the weights of the items in this set. They registered as follows: 10g - 10.00159 g 20g #1 - 19.99577 g 20g #2 - 19.99664 g (top pin was slightly tilted due to being loose in the box) 50g - 49.99365 g 100g - 100.0078 g 100g - 100.0080 g 200g - 200.0068 g 500g - 500.00 g (This item was outside the measurement range of the scale and was compared on a calibrated centigram scale to be accurate to decimal places when compared to a 500g ASTM Class 1 reference weight). So, for the most part this is an ASTM Class 6 set with some weights having enough deviation to fall into ASTM Class 7 (IOLM Class M2). In other words, about as inaccurate of a calibration set as you can buy, at least with regard to ASTM calibration classes (7 is the worst). But, for the price it is a decent set for low accuracy (i.e., every day/mere mortal) scale calibration of scales that go down to centigrams.