In article , Harold & Susan Vordos says...

I don't like thread mikes. Never have, although they are fine for home
usage, probably even so good as to be considered over-kill. My personal
preference is to use wires, not even triangles. Both thread mikes and
triangles have the potential to measure a thread off the pitch diameter when
there's the slightest error in thread form. That's not true with wires.

Harold I cannot argue with using the best method for the job, even
at home, but it would seem to me that the wires cannot meausure
properly if there *is* an error in the thread form. For example,
what if the threads were cut to some odd angle, say, 63 degrees
or so. Unless one used a comparator to actually measure the thread
angle, wouldn't the wires give some reading that would allow
one to *think* the threads were properly formed when in fact
they were not?

What role do thread gages play in all this?

Jim

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