I made this video to demonstrate some of the different VDI numbers that the AT-Pro displays for Platinum, 10K and 14K Gold, .925 (Silver), Tungsten, and Stainless Steel Rings. I made this video for more of the AT-Pro beginner, but it does contain interesting info for all AT-Pro users.
Enjoy!
[video]http://youtu.be/NSTADU9UWIM[/video]
Enjoy!
[video]http://youtu.be/NSTADU9UWIM[/video]