標準號：ISO 4291-1985
中文標準名稱：圓度偏差估計法 半徑變化的測量
英文標準名稱：Methods for the assessement of departure from roundness; Measurement of variations in radius
標準類型：A50
發布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：A50
國際標準分類號：17.040.30
適用范圍：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.