I've added what I hope are some helpful pictures/examples of measuring the main and jib. I don't have every measurement on the page but I do have the key points and some tips. Hopefully you'll find it useful and it will help clear the fog a bit. If you have something that is nagging you let me know and I'll try to get it on the page.

Main and Jib Measurement Pictures

You can also get to it by navigating to http://www.naf18.com -> Measurement -> Measurement Pics/Tips

David Ingram
F18 USA 242
http://www.solarwind.solar

"Do or do not. There is no try." - Yoda
"Excuses are the tools of the weak and incompetent" - Two sista's I overheard in the hall
"You don't have to be a brain surgeon to be a complete idiot, but it helps"