The term regardless of feature size is a modifier that tells machinists that a tolerance of form or position or any characteristic must be maintained, regardless of the actual produced size of the object.

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The term "regardless of feature size" (RFS) specifies that the tolerance or condition must be met irrespective of the actual size of the feature within its size tolerance. This means the geometric or positional tolerance must be maintained even as the feature varies within its size limits.

The Term Regardless of Feature Size Is a Modifier That