# The Measuring Instruments Regulations 2016, Paragraph 5.1


A gas meter powered from the mains (AC or DC) shall be provided with an emergency power supply device or other means to ensure, during a failure of the principal power source, that all measuring functions are safeguarded.

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Source: https://www.legislation.gov.uk/uksi/2016/1153/schedule/1D/paragraph/5.1 (the official version)
Page: https://openlegislation.uk/measuring-instruments-regulations-2016/schedule-1D/paragraph-5.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.