Abstract

The recent past of roughness measurement and characterisation is briefly reviewed and some interesting unresolved problems are discussed.Gaps in the present instrumental coverage of range-resolution space are identified.Progress of in-process and inspection techniques is reviewed, and it is noted that existing measurement techniques are restricted to single-valued surfaces.The lack of compatibility of proprietary software packages is deplored and timely development of soft gauges is advocated. Support is expressed for current proposals for a consolidated 3D parameter set. Finally two remaining problem areas of 3D characterisation are identified as the description of lay and the connectedness of surface features.

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