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Manner of use

6.—(1) Where a meter measuring system is marked with—

(a)a temperature range, it shall not be used for trade in temperatures outside that range;

(b)a flowrate range, it shall not be used for trade at a flowrate outside that range.

(2) A meter measuring system which bears a mark which signifies the manner and purpose of use, shall not be used for trade in a manner or for a purpose which does not accord with that marking.

(3) If a meter measuring system is adjusted, the instrument shall not be used for trade unless the calibration of the instrument is set as close to zero error as is practicable.

(4) A meter measuring system shall not be used for trade unless it is fitted with a ticket printing mechanism which provides an individual printed ticket.

(5) A meter measuring system shall not be used for trade unless the sales indicator—

(a)is set to zero before measurement of the liquid fuel commences;

(b)remains at zero until that fuel starts to emerge from the instrument;

(c)is not reset to zero during measurement of that fuel; and

(d)cannot be advanced by any means other than by the discharge of that fuel from the instrument and the proper operation of the instrument.

(6) Where the tank containing the liquid fuel to be delivered consists of more than one compartment, that fuel shall not be transferred from one compartment to another when that fuel is being measured.

(7) A meter measuring system shall not be used for trade in circumstances—

(a)which are likely prematurely to degrade its metrological characteristics; or

(b)in which it may be prevented from operating consistently or accurately.