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61. Stamps shall be obliterated by an inspector, in accordance with the requirements of these Regulations, by means of punches or pincers of suitable sizes of a six-pointed star design as shown in the following illustration:
62. An inspector shall obliterate the stamp on any measuring equipment which—
(a)fails upon testing—
(i)in the case of a contents gauging system or a meter measuring system, to fall within the prescribed limits of error in deficiency, or within twice the prescribed limits of error in excess, specified in Regulation 56(1) above as appropriate to the case; or
(ii)in the case of a dipstick measuring system, to fall within the prescribed limits of error specified in Regulation 56(2) above; or
(b)fails to comply with any other appropriate requirement of these Regulations:
63. An inspector shall obliterate the stamp on any measuring equipment which has, since it was last stamped, had any alteration or addition made to it such that it could not be passed as fit for use for trade under Regulation 57 above.
64.—(1) Subject to paragraphs (2) and (3) below, for the purposes of these Regulations the obliteration of any one stamp on any measuring equipment shall be deemed to be the obliteration of all other stamps on that equipment except where the stamp has been lawfully obliterated under Regulation 65 or 66 below.
(2) Where a stamp is obliterated on a dipstick, this Regulation shall not apply so as to prevent the use of a spare or replacement dipstick for measuring the quantity of fuel in the compartment to which the first- mentioned dipstick relates.
(3) Where a stamp on that part of a contents gauging system relating to one container only is obliterated, this Regulation shall not apply so as to prevent the system or any other contents gauging system being used for measuring the quantity of liquid fuel in the other containers on the same road tanker.