[Norman_Oklahoma]

This sounds like it may fall under the heading of metrology . If so, it’s a little outside the comfort zone of most of us here. Still, there are a few guys who might have a crack at it…

[bill93]

Your link to a diagram requires one to sign in, so some people won’t see it.

What is the vertical dimension and what is the tolerance on how plumb it must be?

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[sireath]

what kind of tolerance are you expecting? I would think first setting a base point below then using a laser or optical plummet to plumb the line.