Howdy, all! I'm looking for info on a guage used by the naval shipyards- we call it a PN-7 guage, but I cannot find any on-line. It looks very much like a combination square, but is ruled down both legs. It's typically used to measure piping / socket welds (T x 2T).
Can anyone point me to a website or tell me the proper nomenclature for such a beast? I've searched all through L.S. Starrett's website looking for one, now I'm asking for help!
I want to purchase one, but this is proving to be elusive....