# The Measuring Instruments Regulations 2016, Paragraph 12: Manner of use


(1) Where a measuring system is marked with—
(a) a temperature range, it must not be used for trade in temperatures outside that range; or
(b) a flowrate range, it must not be used for trade at a flowrate outside that range.
(2) A measuring system which bears a mark which signifies the manner and purpose of use must not be used for trade in a manner or for a purpose which does not accord with that marking.
(3) If a measuring system is adjusted, it must not be used for trade unless the calibration of the system is set as close to zero error as is practicable.
(4) A measuring system must not be used for trade unless it is fitted with a ticket printing mechanism which provides an individual printed ticket.
(5) A measuring system must not be used for trade in circumstances which are likely prematurely to degrade its metrological characteristics.
(6) A measuring system must 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 instrument.
(7) A measuring system must not be used 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.

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Source: https://www.legislation.gov.uk/uksi/2016/1153/schedule/6/paragraph/12 (the official version)
Page: https://openlegislation.uk/measuring-instruments-regulations-2016/schedule-6/paragraph-12
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.