This work deals with the study of some components of uncertainty deriving from the manufacturing process. Starting from geometrical data extracted from a workpiece, "technological fingerprints" left from the process itself on the workpiece are identified and characterised. The set of measured points brings with itself the history of the product development, including the variability associated to the manufacturing process. Indeed, it contains a mixture of different elements, that should be analyzed and identified in the analysis of manufacturing, in order to gain the whole ...