This part of GB/T 33523 specifies the surface structure contact (stylus) instruments of the area method: --Characteristics of physical measuring tools used as measurement standards; --Evaluation method of residual error; --Calibration, acceptance and periodic verification Detection method. This section applies to physical measurement standards used to calibrate or verify area method surface structure contact (stylus) instruments.
GB/T 18779.2-2004 Geometrical Product Specifications(GPS)-Inspection by measurement of workpieses and measuring equipment-Part 2:Guide to the estimation of uncertainty in GPS measurement,in calibration of measuring equipment and in product verification