Over time accumulated grit and dust can affect accuracy. A quick test with RCBS Scale Check Weights will tell you if your scale is reading correctly. The following weights are included: 1-200 grain, 2-100 grain, 1-50 grain, 2-20 grain, 1-10 grain, 1-5 grain, 2-2 grain, 1-1 grain, and 1-1/2 grain. Comes in a plastic box with a pair of forceps (for handling the weights).
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