law: Petroleum Act, 1934
  15. Standard Test Apparatus
  (1) A standard apparatus for determining the 25[flash-point] of
  
  petroleum shall be deposited with an officer to be appointed in this behalf by
  
  the Central Government, by notification in the Official Gazette.
  (2) Such apparatus shall be engraved with the words
  
  "Standard Test Apparatus", and shall be verified and corrected from
  
  time to time and replaced when necessary, in accordance with rules made under
  
  section 21.
  (3) The Standard Test Apparatus shall, on payment of the
  
  prescribed fee, be open to inspection at all reasonable times by person wishing
  
  to inspect it.