The following roughness meters are commercially available, and are thought to be suitable for the generation of roughness information for use with the SAT software. The list may not be exhaustive; please contact HSL (sat@hsl.gov.uk) if you are aware of the existence of other suitable meters.
The Taylor Hobson Surtronic Duo
http://www.taylor-hobson.com/surtronicduo.htm
The Mitutoyo SJ-201P
http://www.mitutoyo.com/catalog/pdf/B-11.pdf
The Mahr Federal Pocketsurf EGH-1026
http://www.msi-viking.com/MarSurf_Surface_Texture_Measuring/
The Health & Safety Executive does not specifically endorse any of the meters listed above.