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· Premium Member
4,872 Posts
I think when some of us use the term "eyeballing" is in making sure there is no dipping between grade stacks that was measured out. I figure grades but the eye is the best to see the "flow".
Many garage floors usually have a 4" fall from back to over head door .

I was very happy with the install of your unit. I just have not had a place to use it on the RR ,,yet.
I have 50' of 250 rail and what to place a trolley line,,,somewhere. My RR is just not big enough...
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