I was however wondering if the lines were properly sized for the loads, and if there was a better way besides using a caliper... due to the fuzz on the lines as they age.

I have a very nice digital caliper that does both mm and in.

Hey, easy enough to grab and get good measurements. Jon's suggestion about line size is making me rethink changing diameters. Since I am not racing this boat... bigger lines aloft are not that big of a deal and they sure feel better on the hand.