law: Indian Boilers Act, 1923 
  25. Penalty for tampering with register marks 
  (1) Whoever removes, alters, defaces, renders invisible or
  
  otherwise tampers with the register number marked on a boiler in accordance
  
  with the provisions of this Act or any Act repealed hereby, shall be punishable
  
  with fine which may extend to five hundred rupees.
  (2) Whoever fraudulently marks upon a boiler a register number
  
  which has not been allotted to it under this Act or any Act repealed hare by,
  
  shall be punishable with imprisonment which may extend to two years, or with
  
  fine, or with both.