5U.K.In measuring any ballast against a calibration mark on such a receptacle as mentioned in paragraph 4 above, the ballast shall be filled into all parts of the receptacle as far as, and be levelled off against, that calibration mark as nearly as the nature of the ballast will permit; and where any ballast is measured for the purposes of trade in such a receptacle, any person who—
(a)being the person carrying out the measuring, fails so to level off the ballast when it is loaded into the receptacle, or
(b)causes or permits a heaped load to be sent out in the receptacle, shall be guilty of an offence.