supporting documentation that explains the details of the alternative weighing method proposed to be used including evidence that the method will produce a fair and reasonable calculation of weight.
dogfennau ategol sy’n esbonio manylion y dull pwyso arall rydych chi'n bwriadu ei ddefnyddio, gan gynnwys tystiolaeth fod y dull yn cyfrifo pwysau’n deg ac yn rhesymol