Quote Originally Posted by JAZZCNC View Post
Wasn't referring to any specific area I was saying the whole measuring and graphs etc to the level your quoteing was bollocks because unless you measured and worked from a calibrated reference point with calibrated and accurate measuring devices you couldn't possibly know for sure.!
The measurements I was taking were relative, not absolute. That is sufficient for the purpose, if you accept that the flatness of my surface plate as an adequate reference point.