International Standard
ISO 4291:1985
Methods for the assessement of departure from roundness — Measurement of variations in radius
Reference number
ISO 4291:1985
Edition 1
International Standard
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ISO 4291:1985
Published (Edition 1, 1985)
This standard was last reviewed and confirmed in 2020. Therefore this version remains current.

ISO 4291:1985

ISO 4291:1985
CHF 96
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Establishes types of contact (stylus) instruments to be used, recommendations for their use, procedures for calibration of instruments and verification of their characteristics. Applies to a profile transformation, obtained under reference conditions. Departures from roundness of the measured profile, procedure, calibration and determination of systematic errors of rotation are dealt with in annexes A to D, respectively. Annex E gives rules for plotting and reading polar graphs. The position of the least squares centre can be calculated from a simple explicit equation given in annex F.

General information

  •  : Published
     : 1985-09
    : International Standard confirmed [90.93]
  •  : 1
     : 18
  • ISO/TC 213
  • RSS updates

Life cycle

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