National Metrological Technical Specifications of the People's Republic of China
Latest
JJF 1485-2014
Scope
This specification is applicable to the calibration of roundness calibration blocks (hereinafter referred to as calibration blocks) with a nominal chord height value of (1~50) μm.
JJF 1485-2014 history
2014JJF 1485-2014 Calibration Specification for Roundness Flick Calibration Standard