Section 2
SEC. 2. This laboratory, to be placed under the direct supervision of the Industrial Division of the Commission, shall have the duty of inspecting, examining and approving periodically all meters and appliances for measurements used by all public services under the jurisdiction of the Commission to insure their accuracy: Provided, however, That the City of Manila shall not be deprived of the powers heretofore exercised under Acts Numbered Four hundred eighty-four and Two thousand and thirty-nine.