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Within specification or out of specfication

Discussion in 'Other Quality and Business Related Topics' started by Plague Doctor, Jun 30, 2017.

  1. Plague Doctor

    Plague Doctor Member

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    Hello,

    There is a spec requirement for dimension - 1,3 +/-0,3 mm

    The measured value is 1,68 mm

    Is it:
    1. within spec because the first out-of-spec value is 1,7 and 1,68 is lesser and thus in spec
    or
    2. out of spec because the last within spec value is 1,6 (should be interpreted as 1,60) and 1,68 is bigger.

    BTW, the rounding is not applied in measurements, am I correct?
    So its not right to consider 1,61 - 1,64 mm as 1,6 mm. and 1,65 - 1,69 mm. as 1,7 mm?

    Thank you.
     
  2. John C. Abnet

    John C. Abnet Well-Known Member

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    Good day Plague Doctor;
    It is always best to go directly to a consensus standard to provide basis and objectivity. ASME Y14.5M paragraph 2.4 provides the following...(see attached).
    Hope this helps.
     

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    Plague Doctor likes this.