I appreciate the time and effort that went into this report and video's. I'm sure the amount of editing and installing/removing glasses took your entire week/weekend. However, I'm going to be the first to complain (SORRY!!). Couldn't you use a stationary tripod that kept the viewing angle the same between glasses? Both the AFM and CV shots between PDI and Bob's glass are at different angles or at least different zooms. As you know, with light, any variance in angle and distance is going to bias the results one way or the other. Or was the camera the same and the variance is in editing?

A detailed pic of the bevel was shown here: http://forum-img.pinside.com/pinball/forum/?bb_attachments=155716&bbat=17722&inline

Looks like single bevel, top side slopes down to fit into channel, bottom side is flat all the away across the glass.

You should take Korn up on his offer....If he blesses it, the masses will follow as he's very well respected on RGP.