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Gage R (Not Gage R&R)

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  • #55483

    Rappuhn
    Participant

    Does anyone know where I can find information on conducting a Gage R? I have some information that was created by the Ford Quality Office about them but cannot find anything else on the subject.

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    #200168

    Katie Barry
    Keymaster

    @crappuhn We have a whole section of content on measurement system analysis/Gage R&R here: https://www.isixsigma.com/tools-templates/measurement-systems-analysis-msa-gage-rr/

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    #200171

    Rappuhn
    Participant

    @katiebarry I appreciate you pointing me to the Gage R&R information but I don’t see anything in there that talks to only Gage R. This is the problem that I am having as I can find lots of different information on doing Gage R&R’s but the Gage R only topic seems to be a hidden mystery.

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    #200174

    José Pelegrín
    Participant

    Could you provide more details on what you are trying to achieve? Is it only a Repeatability or Reproducibility exercise?

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    #200176

    Rappuhn
    Participant

    We are only trying to determine the Repeatability of the Gage.

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    #200179

    Chris Seider
    Participant

    Hmmmm, why not check reproducibility?

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    #200182

    Lew Yerian
    Participant

    You could try the Shainin Isoplot. True Shainin Red X users might argue about it, but an Isoplot is basically a “Gage R” (a single person measures a group of parts twice – i.e. Repeatability).

    However, I agree with Chris’s comment. Why are you not checking reproducibility too? Unless you have a very specific scenario, I would use a Gage R&R.

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    #200183

    Joseph
    Participant

    The ASTM Standard Guide for MSA E2782-11e1 contains a section on simple repeatability starting at the end of page 4.

    I can understand the need for this when you’re having repeatability difficulties it makes a lot of sense to have a short study of just repeatability to assess revisions rather than having to have multiple operators when you know you have a few iterations to go before repeatability itself is okay.

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    #200184

    Dave Criscuolo
    Guest

    Rappuhn,
    See the link below, I don’t use this for final gage acceptance, but I do use it for preliminary determination of short-term gage repeatability only. Always use more complete and detailed MSA methods for final gage acceptance.
    It is on page 197 in the 3rd edition.
    Appendix D of the AIAG Reference Manual.

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