law: Standards of Weights and Measures Act, 1976 
  37. License to
  
  manufacture weights or measures when to be  issued. -
  (1) Before
  
  issuing a license to make or manufacture any weight or measure to which this
  
  Part applies, the State Government shall satisfy itself that a certificate of
  
  approval of the model of such weight or measure has been granted by the Central
  
  Government under Sec. 36.
  (2) Where any
  
  certificate of approval of any model has been revoked by the Central
  
  Government, the license issued by the State Government for the making or
  
  manufacturing of any weight or measure in accordance with such model shall
  
  stand suspended:
  Provided that such suspension
  
  shall stand vacated if such model is subsequently approved by the Central
  
  Government.