HB 3310-1980
fixed variable distance ruler (English Version)
- Standard No.
- HB 3310-1980
- Language
- Chinese, Available in English version
- Release Date
- 1981
- Published By
- Professional Standard - Aviation
- Status
- 1991-07
- Replace By
- HB 3310-1991
- Latest
- HB 3310-1991
HB 3310-1980 history
- 1991 HB 3310-1991 Fixed distance plate
- 1981 HB 3310-1980 fixed variable distance ruler
