# The Lawnmowers (Harmonization of Noise Emission Standards) Regulations 1992, Paragraph 5.2: Measuring instruments


The following instruments may be used to satisfy the preceding requirement:
(a) a sound level meter which at least meets the requirements of IEC Publication 651, first edition, 1979 for the type of meters in Class 1. The meter must be used in the S response mode;
(b) an integrator effecting analog or digital integration of the squared signal over a given time interval.

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Source: https://www.legislation.gov.uk/uksi/1992/168/schedule/3/paragraph/5.2 (the official version)
Page: https://openlegislation.uk/lawnmowers-harmonization-of-noise-emission-standards-regulations-1992/schedule-3/paragraph-5.2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.