# The Lawnmowers (Harmonization of Noise Emission Standards) Regulations 1992, Paragraph 10.1: Measurement interval T(= t2 − t1)


The measurement interval T must in principle be at least 15 seconds; in the case of a work cycle, it must be equal to the duration of a whole number of work cycles.

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Source: https://www.legislation.gov.uk/uksi/1992/168/schedule/3/paragraph/10.1 (the official version)
Page: https://openlegislation.uk/lawnmowers-harmonization-of-noise-emission-standards-regulations-1992/schedule-3/paragraph-10.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.