A machine controller includes a memory and a processor configured for operating a machine control for automatically controlling apparatus for performing a machining process on a workpiece at least partially as a function of data relating to a parameter of the workpiece, and a gage control for automatically controlling gaging apparatus for collecting and processing the data relating to the parameter of the workpiece and storing the data in the memory. At least a portion of the memory in which the data relating to the parameter of the workpiece is stored, is configured as a shared memory so as to allow the machine control to immediately retrieve and use the stored data relating to the parameter of the workpiece. The controller has particular utility for use in controlling a honing process and a gaging process, which can be in-process or post-process, and which can be used for bore sizing and other parameters.