HB 1931-1975
Calibration plug gauge for tapered thread root high thread ring gauge (English Version)
- Standard No.
- HB 1931-1975
- Language
- Chinese, Available in English version
- Published By
- Professional Standard - Aviation
- Status
- Latest
- HB 1931-1975
HB 1931-1975 history
- 1970 HB 1931-1975 Calibration plug gauge for tapered thread root high thread ring gauge
