working together the three partners developed a method of using multiple 2 dimensional images into a single 3-dimensional image that shows how the marking dye looks after the test. here are the parts to this roller. my guess is that they worked together for many hours. i would love to see it in person. the world market share of these three groups together is just 1.5%. they are both friendly dogs but continue to deal with occasional skin issues that requires treatment. people like me and like us need to know that people like you are out there and available. 