95.99 Withdrawal of Standard May 22, 2026
ISO
ISO/TC 213 Dimensional and geometrical product specifications and verification
International Standard
17.040.20 Properties of surfaces
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.
WITHDRAWN
ISO 4291:1985
95.99
Withdrawal of Standard
May 22, 2026
ABANDON
ISO/WD 4291