While CAT scales were designed for large trucks, they come in handy for the rv's also...
They just set up a new feature @ weighmytruck.com
where you don't have to go in to get your scale ticket, they will email it to you if you sign up...
One caveat I noticed, it will NOT be a certified scale ticket in case you need that !
but convenient for quick verification of your weights and its free
(well, after you pay the $10 for the weigh!)