Posted by Ed Giralico (188.8.131.52) on November 04, 2002 at 08:30:04:
In Reply to: Re: Re: Double Plus or Minus Tolerance posted by Randy Kimball on October 28, 2002 at 23:10:42:
Iv'e noticed this type of dimensioning on consumable tools such as drills and reamers. For instance: the machinery's handbook dimensions shank diameters of some reamers as -.001 to -.005 , and cutting diameters of reamers as +.0001 to +.0004. This way you can still call a 1/4 inch reamer a 1/4 inch reamer and not some odd-ball size ???? I'm not sure, but it seems legit. It insures shank fits to collets.
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