What purpose are you using this for?I'm working in the aircraft industry, and am using a Leica LTD 500 laser tracker system for assembly inspection. It is accurate to within .0005", and capable of taking 1000 readings per second, generating x,y,&z coordinates or polar coordinates. It has a cost of about 250,000 dollars.Depending on what your applications are, the equipment prices vary. Leica has a website, not sure what it is , but it's worth a try.