Anyone who runs a 5-axis machine knows how important accurate centerline measurements can be for accurate machining. Often times, however, when troubleshooting process issues, or after a slight “bump” of the machine, there might be a need to verify or re-measure these centerline values. This usually requires a costly service call, and, even more painful, costly downtime of the machine while waiting. Although there is no substitute for the accuracy of the certified kit used by Hurco and distributor service personnel, this procedure will hopefully allow customers to keep their machines up and running (even if it is only while waiting for the service technician to arrive).