An x-ray positioning device that allows a dental practitioner to adjust the x-ray beam horizontally and vertically relative to the center of the radiographic film with a great degree of precision. The device includes a frame, a bite block connected to the frame, an aiming ring connected to the frame, and an image receptor holder that is also connected to the frame. The aiming ring and image receptor holder are adjustable so as to allow the x-ray beam directed through the aiming ring to be adjustable horizontally and vertically relative to the center of an image receptor (e.g. a radiographic film packet) retained by the image receptor holder. Other References

“A Universal Film Holding-Beam Alignment System for Paralleling, Bisecting Angle and Endodontic Radiography” Assembly Instructions by Dunvale Snapex System.
Cohn, Steven, A., D.D.S., “Principles and Clinical Techniques.” Endodontic Radiography. 1988.
XCP Positioning Instructions for XCP Kit Evolution 2000 with Bite-wing Holder. XCP Kit without Bite-Wing Holder. XCP Instruction Poster.
“Intraoral Radiography With Rinn XCP/BAI Instructions” Rinn Corporation 1967-1989;