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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.

abhididdigi
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If it's a cruddy level it may be different when reversed. I have one level that is off by about 1/8 over it's length this way. E.g. if it's level one way, reversing it takes a 1/8" rise on one end to fix. I use this one or rough work, and for drawing lines on plywood.

Ok the level works. You need a longer level. Go buy the longest straight 2x4 or 2x6 you can that will fit in the room. Look down the length of it, or better, run a tight string down it to see that it's straight. Piggy back your level on this.

A far easier way however is to get a self leveling laser level.Set it up so that it's exactly X inches above the floor at some point. Now with a tape you can run around and map out your floor. Mine has a couple of gratings that can be put in the path. One spreads the beam into about a 45" wide beam. Set up in one corner and do most of the floor with 2 moves. (The other makes it spread vertically giving you a perfect plumb line.

Sherwood Botsford
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Does the slope indication change sign if you reverse the level?

Does the readout change to level, or 1/4" per foot if you place a 1/2" block under one end of the level? Does it change to the other one of these if you change which end the block is at?

If so, you seem to have 1/8" per foot slope. so, in a distance of 4 feet, there is a difference from level of 1/2" (or 4/8")

If you like other fractions, in 96 (units) the floor differs from level by one (unit). Or you could call it 1.04% - same thing.

Ecnerwal
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