1. A positive piece engagement indicator comprising: a workpiece contact probe for providing electrical communication with a metal surface of a workpiece for purposes of provided a reliable electrical circuit; a tool contact having an engagement surface for providing physical contact with a marking tool to be engaged with a work piece; test voltage means for providing electrical potential between said workpiece contact probe and said tool contact though electrical communication between a first conducting means and a second conducting means, respectively; and indicator means in series between said tool contact and said test voltage means in series within said second conducting means.