Originally Posted by JDA_BTR
What distance should be within 1/16 inch? Is it each side to the level on the floor?
The only purpose of the level on the floor is to account for the fact that after leveling the fuselage, it is not possible to just measure to the floor because a lot of shop floors are far from level.
Set up a 4 ft level, level, on the floor, gives you a valid reference point to measure too.