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Kilograms at NIST
    
  Appears In
      
      MetrologyA Turning Point for Humanity: Redefining the World’s Measurement SystemResources for ReportersWeights & measuresThe Twelve Days of Metric
      
            NIST's platinum-iridium kilogram K92 (front) with stainless-steel kilogram masses in the background.

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Credit
                                J.L. Lee/NIST

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