A researcher in the Anatomy and Cell Biology Division of our institution, the State University of New York Health Science Center at Brooklyn, was conducting cell growth experiments. These experiments required a regular supply of 1-1/2 inch outer diameter petrie dishes, with a 5/16 inch hole drilled precisely in the center of each dish, to allow cell growth to occur in a concentric ring within the dish. A supply of petrie dishes, and an 8 inch Sears Craftsman drill press, were available to the researcher.