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ZEONHAK 2000 Gram Calibration Weight, Class M1 High Precision Grade Calibration Weight for Digital Scale, Precision Steel, Chrome Finish, Silver: Amazon.com: Industrial & Scientific
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Amazon.com: Customer reviews: Truweigh Calibration Weights 50 Grams - Oiml Class M1 - High Precision Grade - Calibration Weight - Calibration for Digital Scale - Weight Set for Digital Scale Gram - Calibration Weights
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