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Re: Double Plus or Minus Tolerance

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Posted By<" ">Michael Marz on October 31, 2002 at 11:07:22:

In Reply to: Double Plus or Minus Tolerance posted byDavid E. Wagher on October 28, 2002 at 11:56:02:

William,

Being a German trained Tool maker and a Mechanical Engineer, I don't see any problems from both a machining and design aspect. A good machinist will understand what the tolerances mean. If you look at the ISO tolerancing methods, you will see a "round" nominal dimension followed by the tolerance. I don't see anything wrong with using double plus or minus tolerances.

Mike
: What if any rules apply to the Unilateral/Bilateral
: Tolerances for dimensions with Double Plus or Minus
: Tolerance?
: Example: 0.250 -.010 to -.020

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Subject: Re: Re: Double Plus or Minus Tolerance

Comments:: William, : Being a German trained Tool maker and a Mechanical Engineer, I don't see any problems from both a machining and design aspect. A good machinist will understand what the tolerances mean. If you look at the ISO tolerancing methods, you will see a "round" nominal dimension followed by the tolerance. I don't see anything wrong with using double plus or minus tolerances. : Mike : : What if any rules apply to the Unilateral/Bilateral : : Tolerances for dimensions with Double Plus or Minus : : Tolerance? : : Example: 0.250 -.010 to -.020

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