a hand instrument and method for use by a surgeon to target the appropriate entry point and trajectory on bony tissue through which an instrument , such as a nail , pin , screw , rod , wire , drill bit , or other implant is passed . imbedded within the instrument is at least one relatively radio - opaque target which allows the user to predict with the use of an x - ray or fluoroscopic imaging device the placement of said instrument or implant before drilling it into place with the use of an x - ray or fluoroscopic imaging device . by manipulating the device around the axis of the guide piece , the surgeon can predict the placement of the instrument or implant without iterative insertion and removal of the instrument or implant itself .