2.—(1) The provisions of the Instruments specified in column 1 of the Schedule to these Regulations shall be amended by substituting for the measurements set out opposite thereto in column 3 (and relating to the matters specified in column 2) of that Schedule the measurements set out in the corresponding entry in column 4 and the amendments shall apply as specified in column 5.
(2) Where under this Regulation a measurement is required to be substituted in any provision for a measurement which occurs more than once in that provision, the substitution shall be made in each place where it occurs.