# The Lawnmowers (Harmonization of Noise Emission Standards) Regulations 1992, Paragraph 5.1: General


The instruments shall be designed to measure the A-weighted level of the root mean square of the sound pressure. The level of the root mean square value in time for a measurement point is obtained either by direct reading of the instrument, or by calculation in accordance with section 11.

---
Source: https://www.legislation.gov.uk/uksi/1992/168/schedule/3/paragraph/5.1 (the official version)
Page: https://openlegislation.uk/lawnmowers-harmonization-of-noise-emission-standards-regulations-1992/schedule-3/paragraph-5.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.