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Calibration weight for Fx120i scale

Adams Class 2 100 gr. $65 on Amazon

This fit my needs per my research. More that what is needed but not over kill to the point of being a class 1. Hope this helps.
 
Need a cal weight, what and from whom did you buy for lab quality scale

I bought one off ebay, found a good deal on used class 1 Troemner.

As far as "need" though, it's not super critical how accurate to the 0.0001 the calibration weight is. Reloading is much more about precision than it is about accuracy... ie. is your load the exact same as when you developed it last year, rather than whether it matters if your load is 42.42 grains vs 42.50 grains in absolute terms against some scientific standard.