Originally Posted by EagleHawk
I'm curious but why does it matter if you level your unit before applying stick on levels. I've used the 'cheap' ones for a few years and I just apply them regardless of if my unit is level. A level is a level. The point is that if the unit is not level when you apply them once you use them to level it they'll show level. It's worked for me. I do use a small torpedo level from time to time to check if the stick on ones are still effective. When they're not I replace them.
Either I'm not understanding you or you've been lucky when putting on the levels. If the trailer is not level when you put on the stick-on levels, how do you know where to position the stick-on levels?
What everyone else has been doing is using a level on the inside floor or in the refrigerator (the most critical part of the RV when it comes to needing to be level), then
applying the stick-on or other kinds of levels on the out side to simplify leveling the trailer. Once the trailer is level, the outside levels are installed with the bubble set at dead center. That way, the outside levels will show if the inside is level. It eliminates the need to run inside to check the level then running back outside to adjust the jack(s).
One popular set up has a bulls eye level screwed to the top of the tongue in sight of the jack. It makes setting the front to back level easier. Other locations for levels is on the front and back of the RV (TT or 5er) to check for side to side level. The reason for having both front and rear levels is to ensure the RV isn't twisted.
I've seen giant levels on the front of RVs that consist of a fluid filled curved tube with a buoyant ball inside that is easily visible from inside the tow vehicle. It's purpose is to allow the tow vehicle driver to see when the TT or 5er is level when backing it up onto leveling blocks.