law: Standards of Weights and Measures Act, 1976 
  19. Power to Central
  
  Government to prescribe physical characteristics, etc., of weights and
  
  measures. - 
  (l)The Central
  
  Government shall, in relation to any weight or measure, prescribe the physical
  
  characteristics, configuration, constructional details, materials, equipment,
  
  performance, tolerances, methods or procedures of tests in accordance with the
  
  recommendations made by the International Organization of Legal Metrology:
  Provided that where no such
  
  recommendations has been made, the Central Government shall prescribe such
  
  physical characteristics, configuration, constructional details, materials,
  
  equipment, performance, tolerances, methods or procedures of tests in relation
  
  of any weight or measure as it may think fit.
  (2) Where it is not
  
  reasonably practicable to give effect to any recommendation made by the
  
  International Organization of Legal Metrology, the Central Government may make
  
  such charges of a minor nature in the recommendation of the International
  
  Organization of Legal Metrology as may appear to it to be necessary.