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Hi Bob!
I think you're gonna have to step back a bit so we can see how the pipe joint looks with the 3, 4, 5, 6, 7, 8 and nine O'clock positions in order to see where all of the High-low locations are below the 3 & 9 O'clock positions... If you have to take more than one pic from different angles, then you might just be able to display most if not - all of the High-Low locations and any out of roundness.
Have you contacted Mathey Dearman yet??? These folks make some really nice pipe fitting tools for any size pipe... Here's their website:
http://www.mathey.com/ Here's some tools that may be of assistance depending on your budget constraints:
http://www.mathey.com/documents/MDCatalog2005.pdfHere is the webpage that links you to all of their .pdf's:
http://www.mathey.com/products.htmCommercial pipe sizes:
http://www.mathey.com/documents/Commerical PipeSizes.pdf
Here's a "Mega" rim clamp manual:
http://www.mathey.com/documents/RimClampManual.pdfHere's the "Mega" rim clamp catalog:
http://www.mathey.com/documents/megarimclamp.pdfHere's the Rim clamp catalog:
http://www.mathey.com/documents/RimClamp.pdfI would suggest for you to contact them in order for them to completely understand your specific application because I'm sure that they can come up with the right tools for your job. You also may want to ask if there is a possibility for you to rent any of their standard (if applicable) type clamps instead of purchasing (I doubt it but, one never knows until one asks!) as an option. Oh yeah - I almost forgot, you better grind down/ inspect those tack welds perpendicular to the pipe joint and clean up the base metal oxidation within the bevels before you weld otherwise you'll have some problems later on. Just a suggestion based on best practices -that's all!
BTW, I do not work for them nor do I sell their products however, I have used their products in the past and consider them excellent equipment for use on pipe & tubing.
Respectfully,
Henry