ISO 13473-3:2002 specifies requirements for profilometers used in pavement engineering in order to give meaningful and accurate measurement of micro-, macro- and megatexture characteristics of paved road and airfield surfaces. It also includes schemes for the classification of such profilometers with respect to their use and overall accuracy. The profilometers may be of any operational type. The scope of ISO 13473-3:2002 does not include profile analysis of machined surfaces. Also excluded from the scope is the profile analysis of road unevenness.