I am interested that you make a point of spelling gage(sic) correctly but use strange dimenshuns for the threads (4x48) I have never understood that. Vive la difference!
These days I'm happy if there's only one single letter word in a sentence: "I" or "a". [as opposed to the other
single letter words: "r" (are), "u" (you), and probably a handful I don't know]CogWheel:
This has been on my "build sometime" list for quite some time, but hasn't made it to the "built it" list quite yet. Looks like a well-executed project that will expand your accurate measuring capabilities considerably.