Clause 40

Save as the Minister may by order otherwise provide, and except in the case of a retail transaction or a transaction with respect to which provision to the contrary effect is for the time being made by Part IV, nothing in this Act shall make unlawful the use in any transaction, by agreement between the parties thereto, of any unit of the local customary weights and measures which are set out in the Third Schedule and have the values defined therein.

The Minister may from time to time by order amend the Third Schedule by removing any unit of measurement of length, of area, of volume, of capacity, or of mass or weight, as the case may be.