(1) Any of the commissioners may administer an oath to any person appearing as a witness before the commission, whether the witness has been summoned or appears without being summoned, and may examine the witness upon oath.(2) Where any witness to be examined before the commission conscientiously objects to take an oath the witness may make an affirmation that the witness conscientiously objects to take an oath, and that the witness will state the truth, the whole truth and nothing but the truth, to all questions that may be put to the witness.(3) An affirmation so made shall be of the same force and effect, and shall entail the same liabilities as an oath.
Royal Commissions Act 1923 No 29