how to measure internal threads?

**ahidley** · 08-18-2009, 07:47 PM

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?

**Ken_Shea** · 08-18-2009, 08:09 PM

Never used one but suspect you would use thread gages.

Vermont makes them as do many others.

Ken

**Arcane** · 08-18-2009, 08:16 PM

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

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

**Forrest Addy** · 08-18-2009, 08:23 PM

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

**Glenn Wegman** · 08-18-2009, 08:31 PM

Whew!

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

**ahidley** · 08-19-2009, 08:05 PM

ok, sorry. I use to "live here" till they blocked it at work!!

Now I only have dial up

**Ken_Shea** · 08-19-2009, 08:09 PM

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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