28.—(1) Without prejudice to Part II of Schedule 5, where any road vehicle is loaded with goods for sale by weight to a single buyer of the whole of the vehicle's load, or for delivery to the buyer after they have been so sold, the buyer or seller of the goods, or any inspector who shows that he is authorised so to do by the buyer or seller of the goods, may require the person in charge of the vehicle to have it check-weighed, and if that person fails without reasonable cause to comply with any such requirement he shall be guilty of an offence.
(2) Where after the check-weighing in pursuance of a request by the buyer under paragraph (1) the weight of the goods is found to be not less than that stated by the seller in any document delivered to the buyer at or before the delivery of the goods to him, the buyer shall be liable to defray all costs reasonably incurred in connection with the check-weighing, but where the weight of the goods is so found to be less than that so stated, all such costs shall be defrayable by the seller.