11.—(1) The stamp shall be placed on the verification mark support referred to in clause 3.9.2 of OIML R51 which is set out in Schedule 4.
(2) An inspector shall not stamp an automatic catchweighing instrument in accordance with paragraph (1) if it bears any mark which, in his opinion, might reasonably be mistaken for the stamp, or any statement or mark (other than an inspector’s stamp) which purports to be or, in the opinion of the inspector, might reasonably be mistaken for an expression of approval or guarantee of accuracy by any body or person.