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Calibration Certificate of Precision Step Gauge issued by National Institute of Metrology P.R.China.
 

    National Institute of Metrology (NIM) is a member of BIPM (Bureau International des Poids et Mesures) and has signed MRA(Mutual Recogintion Agreement) on behalf of People's Republic of China. The following is the signatories:

 
 
 
 
 
 
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