RCBS Standard Scale Check Weights, 60.5 Grains
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Verify scale accuracy with these weights
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. Comes in two small plastic boxes with the following grain weights, 2-20, 1-10, 1-5, 2-2, 1-1, 1-1/2.