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Thread: Surface Finish: RMA & RMS

  1. #1
    Associate Engineer
    Join Date
    May 2021
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    Surface Finish: RMA & RMS

    Hi All, is RMA same as RMS?

  2. #2
    Administrator Kelly Bramble's Avatar
    Join Date
    Feb 2011
    Location
    Bold Springs, GA
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    2,418
    Similar,

    Ra = Roughness Average

    RMS = Root Mean Square

    Math is different but get you similar.
    Tell me and I forget. Teach me and I remember. Involve me and I learn.

  3. #3
    Associate Engineer
    Join Date
    May 2021
    Posts
    2
    Thank you 😊

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