@ DC............+/- 0.1mm accuracy (that's about the average thickness of a human hair) without splitting hairs (see whay I done there) I would of thought that was good enough for most applications.......well it is for me see below......of course unless you can point me in the direction of a similar device with better accuracy at a similar price?
TECHNICAL

Multi Mode From 10,000 – 500,000pts/shoot
Accuracy Up to ± 0.1 mm
Spatial Resolution: up to 0.3 mm
Texture ( Colour / Pts ) Greyscale ( colour option )
Working Distance 400 mm
Depth of Field 150 mm
Field of View 150 x 165 cm
Recommended dimensional Scan From 10 cm3 to 1.2m3
Acquisition Time 10 ms
Software Interface Numisoft RE acquisition and optimization software.
Export File Formats High Quality PointCloud data
Interface USB 2.0
Shock & Vibration proof Standard
Weight 1.9 kg
Embedded Batteries Autonomy 1 day
Regulatory Compliance CE
Noomeo OptiNum RE package OptiNum RE scannerwith its embedded battery, Numisoft RE Software, Power charger, USB cable,robust carrying case,
Recommended Package for OptiNum scanner.. Geomagic Wrap RE Software
Computer Spec CPU:i7Quad core, RAM:8Gb; Graphics: NVidia FX 38000, with 1Gb memory, Windows 7 Pro – 64bit (mandatory )