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These rings would be rejected at a discrimination setting of number 16 or higher on the dial. Of the
60 rings, only 7 or 12% were gold, 12 were sterling silver, and all registered 170 - 171 on the
DTI-II meter.
These rings would be rejected at a discrimination setting of 17 on the dial. Of the 16 rings shown,
2 or 13% were gold, 4 were sterling silver, and all registered 172 on the DTI-II meter.
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