Originally Posted by eyecue
The way the wording is: "appears to be over X thickness" Since appearances can be deceiving, I think it would not get off the ground by having rulers at the divesting point. Slowness aside, it will lead to disagreements that amount to fractions. The passenger will lose.
Which is why I'm going to tape a 1" marked on masking tape on my sandals to help your cohorts at BWI this week. Leave no room for doubt that the soles are less than 1".