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Consider the following statements about specifying tolerances.
1. A total tolerance alone conceals the direction of the error.
2. Component tolerances constrain each attribute separately.
3. A total tolerance is always sufficient on its own.

  • A.All of them
  • B.1 and 2 only
  • C.3 only
  • D.1 only

Answer: B

The first two are correct and are why both are usually specified. The third overlooks the masking that a single combined figure permits. Components constrain each attribute separately. A total conceals the direction of the error.

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