A compact, battery powered video imaging device for use in XYZ stage equipped machines (such as milling machines, jig borers, coordinate measuring machines, etc.) that mounts into the spindle of such a machine and displays a magnified image of a part on the XYZ stage of the machine on an integrated video monitor such as a Liquid Crystal Display panel equipped with crosshairs or similar reference marks. The XYZ stage of the host machine is used to move the part so that various features of the part are brought into the crosshairs of the video monitor. In such a way the XYZ coordinates of various features of the part with respect to a selected reference feature, displayed on the host machine's position readout, can be obtained. This procedure can be used to aid work piece setup, measure parts in-process without disturbing the setup, or to inspect finished parts for dimensional accuracy.If a known good part or a specially manufactured precision gage plate is inspected by a host machine in such a way, the result is reflective of the accuracy of the XYZ stage and position display of the host machine and can be used to qualify the host machine for positional accuracy.