Distance sensor - router - pc - 3d scanning

Hello. I'm building a router and I would like to know if any of you
use a distance sensor to make 3d scanning of parts.
0.2mm of precision is ok to me.

If so, please advice on the hardware and software to collect the
data. I'm confortable with linux or windows, also programmming if
necessary.
If a comercial package is available, it also suites my needs (price
dependable).

Thanks again. Filipe Tomaz.