Again, I reiterate, because this is important! All manufactured objects have a manufacturing tolerance at which the details of the object in question are reproduced. By simply scanning at a sufficiently high resolution to capture that tolerance, one can reproduce every single originally designed detail in the manufactured object in question.
Also, human observational senses have a maximum detail level. For aesthetic but non-functional purposes, such as scanning scratches on the surface of an aged manufactured object, one can scan at the limit of human sensory perception, which may be higher than the manufacturing tolerance of the original object.