File under “Cool-looking-industrial-devices”:
The EXAscan is a handheld 3D laser scanner small enough to fit in a carry-on size suitcase. It uses 3 high resolution cameras in conjunction with a self-positioning target system alleviating any need for external tracking devices during scanning. And on top of all that it looks like special issue starfleet equipment. (and most likely costs about as much.) –Link

DIY 3D Scanner
HOW TO – Build your own 3D scanner –Link

3D Scanning System on MAKE: Projects