(1) This regulation applies to a prepackage that consists of a product contained in a package (the inner package ) that is contained in another package (the outer package ).
(2) A measurement marking need not be marked on the outer package if:
(a) the inner package is ordinarily sold only while it is in the outer package; and
(b) the whole or part of the outer package is transparent; and
(c) the measurement marking on the inner package is clearly visible through the packaging of the outer package.