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how to measure internal threads?

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  • how to measure internal threads?

    I know that you use thread wires to accuratly measure external threads. How do you measure internal threads. Accurate enough to make a class 1, 2, 3, or 4 thread?

  • #2
    Never used one but suspect you would use thread gages.

    Vermont makes them as do many others.

    Ken

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    • #3
      This was asked 2 1/2 weeks ago with 43 replies to the OP request.

      http://bbs.homeshopmachinist.net/showthread.php?t=35864

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      • #4
        Yup. If you can't find an ID thread measurement method to suit you in OldTiffies's thread you're not really trying.

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        • #5
          Whew!

          Thought we were going to start all over again there for a minute or two

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          • #6
            ok, sorry. I use to "live here" till they blocked it at work!! Now I only have dial up

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            • #7
              Originally posted by ahidley
              ok, sorry. I use to "live here" till they blocked it at work!! Now I only have dial up
              Wonder why they did that

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