Regulation 7 Marking
All weights other than wire weights shall be marked with a durable and legible indication of their purported mass.
The marking shall comprise figures indicating the number of units and words or an appropriate symbol or abbreviation mentioned in Schedule 1 to these Regulations to indicate the relevant unit.
No weight shall bear any marking other than:—
the markings hereinbefore mentioned;
the name or mark of the maker;
the name of the owner or an indication of his name;
the stamp applied by an inspector of weights and measures; or
in the case of a weight first passed as fit for use for trade and stamped before 27th April 1978, the word “dram” or the abbreviation “dr”.
Where a weight bears the name or mark of its maker or the name of its owner or an indication of the owner's name, the height of the mark or lettering shall not exceed one-half of the height of the figures employed to indicate its purported mass.