Reference number
ISO 4291:1985
© ISO 2024
International Standard
ISO 4291:1985
Methods for the assessement of departure from roundness — Measurement of variations in radius
Edition 1
1985-09
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Published (Edition 1, 1985)
This publication was last reviewed and confirmed in 2020. Therefore this version remains current.

ISO 4291:1985

Language
Format
CHF 96
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Abstract

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

  • Status
     : Published
    Publication date
     : 1985-09
    Stage
    : International Standard confirmed [90.93]
  • Edition
     : 1
    Number of pages
     : 18
  • Technical Committee :
    ISO/TC 213
    ICS :
    17.040.20 
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