Yes, I looked at the question:
How do you determine the slope of a floor?
I'm trying to measure the slope of the bedroom. I know that the bedroom is sloped, but I am hard time finding out by how much. So I got one of these: https://www.homedepot.com/p/Empire-48-in-True-Blue-Digital-Box-Level-e105-48H/306839434
Only in 6 different places on the floor(which are in horizontal straight line), when I place the Box level vertically, it shows me a slope of 1/8 / ft in the digital box. I don't know what this means, can someone please explain how to measure the slope of the floor?
Someone below asked me what is unclear in the 1/8th per foot. I'm trying to gauge how do I extrapolate it to 8ft. But I'm unable to, since the slope is zero if I move my measure in a straight line.