law: Standards of Weights and Measures Act, 1976 
  57. Penalty for
  
  contravention of Sec. 34. – 
  Whoever, in the course
  
  of any inter-State trade or commerce, -
  (i) Sells, delivers,
  
  or causes to  be sold or delivered to the purchaser any quantity or number
  
  of any article or thing, less than the quantity or number contracted for or
  
  paid for ; or
  (ii) Renders any service
  
  by weight, measure or number, less than the service contracted for or paid for
  
  ; or
  (iii) Demands, or
  
  causes to be demanded, or receives or causes to be received, while buying any article
  
  or thing, any quantity or number of goods in excess of the quantity or number
  
  contracted for or paid for or
  (iv) Obtains any
  
  service in excess of the service contracted for or paid for,
  Shall be punished with
  
  fine which may extend to five thousand rupees, and for the second or subsequent
  
  offence with imprisonment for a term which may extend to five years and also
  
  with fine.