law: Standards of Weights and Measures (Enforcement) Act, 1985
  13. Preparation of
  
  secondary and working standards.-
  The State Government
  
  may cause to be prepared at the metrological wing of the mint at Bombay, as
  
  many sets of secondary standards or working standards as it may think
  
  necessary:
  Provided that 
  
  where the mint intimates the State Government in writing that it is unable to
  
  prepare any secondary standard or working standard, that Government may cause
  
  such secondary standard or working standard to be prepared by such organisation
  
  as the Central Government may, on a reference made to it by the State
  
  Government, by notification, specify in this behalf.