Level

Used an actual level two times. First time when first I got the 5th wheel I put the level on the counter and leveled the trailer left to right and front to back. Then I applied the stick on levels on the drivers side front corner. One on the front (left to right) and one on the side (front to back). I had to do it again about 6 years later when the levels started to wear out and got hard to see.

rk911 wrote:
i use a small, round bubble level but after 35-years my rear end serves as a pretty good level indicator. you're close enough to level if humans are comfy and don't roll out of bed.

Small bubble level here too. I can usually get within 1/2 a bubble just by eye. I also open the fridge and see if the door stays put. If it’s off much it swings open or shut by itself which is annoying.

No matter how level you get your rig, the eggs still slide to the back of the skillet when you cook. It's just a cruel fact of life.

I use a phone app. Level Mate Pro. You can google it. I used all sorts of levels and they all worked but it was time consuming and I am a bit particular. Put in the Level Mate Pro and then leveled the trailer, and set the information into the app. Now, I can see just how much off level from side to side, down to the 1/2 inch. Place the levelers and drive up on them. Disconnect the trailer and use the app to level it from front to back. Actually works pretty slick. It is not perfect but it is an improvement from reading the bubbles.