# The Lawnmowers (Harmonization of Noise Emission Standards) Regulations 1992, Paragraph 7.1.1: Extraneous noise


The measurement of the level of parasitic noise shall not be taken into consideration.
Measurement of background noise
Background noise shall be recorded at the measuring points (see 6.4.2) with the sound source switched off (no sound emission) (see method given in 7.2).

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Source: https://www.legislation.gov.uk/uksi/1992/168/schedule/3/paragraph/7.1.1 (the official version)
Page: https://openlegislation.uk/lawnmowers-harmonization-of-noise-emission-standards-regulations-1992/schedule-3/paragraph-7.1.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.