I was recently asked this question about weighing parts…
If I am weighing and documenting part weight for process documentation, what scale should I use?
The accuracy of a scale must be +/- tenth of a percent of the total part weight or better. For example, if you are weighing a 100+ gram part, the accuracy of the scale should be at least +/- 0.1 gram. If the accuracy of the scale is inadequate, the test results cannot be trusted.
The scale’s accuracy can be usually found in the owner’s manual or on the scale itself.