There must be a YouTube or other website to answer this one...it pertains to layout construction....I understand how to use a "level" to check the "level" of my bench work.
However, I was wondering what the other graduations mean? That is...if you "split" the bubble with one of the lines...are you headed on a specific up or down slope? Does half a bubble off from level mean you're either headed up or down hill at a specific angle or slope??
Thanks for any kind response.