Wanted to confirm values on my FX-120i balance. Found other offerings for the 100g weight for a lot less money and saw terrible reviews. The price was cheaper and even billed themselves as class 2 weights. Old Will got it right on the balance or scale as the case may be and I felt confident that this weight would be right on the mark. I was not disappointed at all. It is an ASTM Class 2 accurate instrument and I feel very confident that the values are right on. Thank y'all Old Will.

I needed a check weight to calibrate an Ohaus SC2020 (no longer in production) that I use for reloading rifle ammunition. After consulting with OWKS via chat I purchased this 100 gram calibration weight. Not the cheapest weight by any means, but a quality piece that's worthy of the scale that it's used for. Comes in a rugged plastic cylinder with data sticker. Very satisfied with this purchase.

Purchased this to calibrate my A&D FX-120i Scale. For the resolution of that scale (0.001 g), I wanted to ensure that I had a high quality calibration weight. This weight has an accuracy of (0.0005 grams). Works as it should. Comes in nice padded case.