Section 3: Nigerian trade standards

(1) The Minister shall maintain secondary and tertiary standards in accordance with the provisions of this section which shall be known collectively as "the Nigerian trade standards" .
(2)
The secondary standards shall consist of standards of all the measures set out in Parts I and IV and all the weights set out in Part V of the Third Schedule to this Act (other than capacity measures of more than ten litres); and any such standard shall be constructed and, while it remains in use, from time to time at intervals not exceeding five years, have its value redetermined, by reference to such one or more of the Nigerian primary standards as may appear to the Minister to be appropriate.
[Third Schedule.]
(3) The tertiary standards shall consist of such of the measures or weights set out in the said Parts I, IV and V as may from time to time appear to the Minister to be necessary or expedient; and any such standards shall be constructed and, while it remains in use, from time to time at intervals not exceeding two years, have its value redetermined, by reference to such one or more of the secondary standards as may appear to the Minister to be appropriate.
(4) The Nigerian trade standard shall be provided or replaced at the direction of the Minister from time to time as may appear to him necessary or expedient, and they shall be in such form and of such material, and be kept under such control in the Federal Ministry of Commerce as the Minister may direct; and a secondary standard of any linear or capacity measure may as the Minister thinks fit-
(a) be provided either as a separate standard or by means of divisions marked on a standard of a larger measure; and
(b) either be marked in whole or in part with sub-divisions representing any smaller unit of measurement or multiples or fractions of such a unit or have no such marking.
(5) Any metric standard of any measure or weight provided under any enactment repealed by this Act and in use as a secondary standard in the Federal Ministry of Commerce immediately before the date of the commencement of this section, shall be deemed for the purposes of this Act, to be a secondary standard provided under this section.