JJF 1252-1990
Technical specification for microscope hardness benchmark operation (English Version)
- Standard No.
- JJF 1252-1990
- Language
- Chinese, Available in English version
- Published By
- National Metrological Technical Specifications of the People's Republic of China
- Status
- 2010-11
- Replace By
- JJF 1252-2010
- Latest
- JJF 1252-2010
JJF 1252-1990 history
- 2010 JJF 1252-2010 Calibration Specification for Measuring Instrument for Laser Paralleism of Micrometers
- 1970 JJF 1252-1990 Technical specification for microscope hardness benchmark operation
