You know the leveling bubble that goes with higher end tripods, the circular one - does anyone know a good source for those? I have seen them at home depot but the diameter is about 1.5 inches, a little to large. Anyone seen anything smaller?
When you want to use a levelling bubble, you must make sure that the alignment of the system you are trying to setup is properly aligned levelling bubble. If the level is slightly slanted from the whole setup. What you think could be levelled may be false info as the bubble may be centered but your setup may be slightly tilted.
They must make small button-sized ones, it is just a matter of finding them. I was told to hit the "RV" shops because they have to level vehicles all the time. The ones I saw online are still too big though...