15. The owner of any boiler who holds a certificate or provisional order relating thereto shall, at all reasonable times during the period for which the certificate or order is in force, be bound to produce the same when called upon do so by a District Magistrate, or Magistrate of the first class having jurisdiction in the area in which the boiler is for the time being, or by the Chief Inspector or by an Inspector or by any Inspector appointed under the ¹[Factories Act, 1965], or by any person specially authorised in writing by a District Magistrate.