Contact system scanners can measure objects with an accuracy about 80-100 microns. FARO arm system can measure components of large volumes using multiple scans.
As we know, the world is never perfect. Unfortunately, there is one variable, which is also very important and that is time. What makes contact systems great is also what makes it slow, contact measurement. It must contact the surface of the object in order to make its measurement. Contact requires motion and one can not go as fast with a large mechanical structure i.e.robot arm. Accuracy and time are two crucial elements, and that is why most people think twice about using a contact system scanner.
Laser scanners are also cannot be used for every application. Laser scanners should not be used when parts
