Surfcom Nex Roughness Testers come with three measurement functions; roughness, contour and roughness/contour). These are spontaneously selectable in accordance with users' requirements. Adoption of multi-sensor technology enables for the single purpose function by a single detector or the multipurpose functions by merging multiple detectors. The systems allows for flexible structure capability for users' requirements, as in usage of detector dedicated to contour or in usage of 3D roughness measuring unit. Surfcom Nex Roughness Testers insure highest accuracy in their class. Roughness, contour measurements and analyses in one measuring run improve the measuring efficiency of these. Dual detectors these come with can be retrofit to current linear series.