elma-spheric water check

[albmich]

I had a test like this done before but not on a Rolex. Usually Rolex does a wet test and looks for air leaking from the case when pressurized and submerged. I think this ticket is from a dry test where they subject the watch to pressures and then measure the flex (deformation) of the crystal. The less deformation, the better the gaskets are. Yours looks fine.