reg 5
If the assessment is based on measurement in accordance with regulation 6(3)(c)— (1) the methods used— (a) may include sampling, which must be representative of the personal exposure of a worker to the mechanical vibration in question; and (b) must be adopted to— (i) the particular characteristics of the mechanical vibration to be measured; (ii) to ambient factors; and (iii) to the characteristics of the measuring apparatus; (c) in the case of whole body vibration, must be carried out in accordance with BS EN ISO standard 5349-2; (2) in the case of hand-arm vibration for devices which need to be held with both hands— (i) measurements must be made for each hand; (ii) the exposure is determined by reference to the higher of the two values; and (iii) information for the other hand must also be provided.