Gates came out with a gauge to use in inspecting there new belts, they have a square groove, and can wear without the tell tale signs of a regular belt. I have waited for this tool for some time, I know I need to get a life; it is a little plastic rod with a thumb hole on the end. I was totally disappointed in today’s shops there is a ton of sophisticated very expensive equipment and this is what I am expected to use to check one of the major parts on a vehicle. Next to brakes and steering I feel the belt is an important part of the vehicle. This does not even look like it would be a decent selling tool as I think to buy something customers like to touch or at least see what they are buying. IE Transmission fluid looks dirty, fuel filters are rusty but this little plastic thingy looks like it belongs in the drawer with the obsolete tools that you just can’t bring yourself to throw away. It is designed to be a selling tool but I still think the old visual inspection is still the best way to. I can see it being used if you have a noisy belt and cannot locate a cause and want to eliminate the belt as it will take some time for us to learn the traits of this new belt.Look on the bright side I got something free from gates and it brightened my day.