What are the four requirements to correctly specify a position tolerance?
What will be an ideal response?
ANS:
There are four requirements to correctly specify a position tolerance:
1. A position tolerance must be applied to a feature of size or a pattern of features of size.
2. Basic dimensions must be used to define the true position of the toleranced feature(s) of size.
3. Datum references must be specified in the feature control frame, except when applied to coaxial diameters.
4. RFS is the default condition per Rule #2, unless MMC or LMC is specified.
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