I am a first time visitor, helped aboard by Beth and Eric Gasper. I am digging my way backwards through time to the sale of the first gauge set to Cadillac around 1908 and then forward to the AIAG and their method. This is where Don Wheeler says that he first learned it around 1980 or so. I'm wondering what happened in the 70 years between those two points? Also, I recently came across an interesting article by Jody Muelander that says that we should unify Gauge R&R, SPC and the GUM to support future world wide manufacturing measurement demands. Check it out. Glad to be here!