So, if I am not mistaken. 3-d digitizing can be calibrated, scales can be set, utensils sensitivity can be calibrated/set and other things adjusted to how the output rhino records vs what you are scribing or moving scibe.
But, when you record a point, and where it is at into rhino. Will rhino round to the nearest whole number x,y,z?
So if you were wanting to do the digitizing in mm, you set something or other to 25.4
Therefore, it cannot give some kind of exact coordinate of a number other than a whole mm increment that if possible, would display in whatever display precision you have set it to display a exact location. Therefore, what rhino stores as an exact location, although differing from display precision is according to your set tolerances somewhat. But in this case rhino may store an exact location as a whole number?
I see the use, and how the resulting reverse engineered output will need to be refined, and actually modeled in 3d, with measurements taken, and framework provided by the 3-d digitizer. But am wondering how tolerances fit into this scenario. I can also see how a main curve if done correctly can be pretty closely sketched, and then scaled to your application. Of course, 3d scanning differs in process, and I am assuming may give similar, but very slightly more dense point structures.
If I’m not mistaken, rhino tolerances can be set to far exceed what 3-d digitizing is capable of correct? Plus holding your handy steady enough to take a recorded point every .1mm and for it to be exact would be nearly impossible to do accurately anyways, and real tiny objects are best measured and modeled.