gb7242
gb7242, Total:2 items.
The international standard classification for "gb7242" includes: Photographic equipment. Projectors , Mechanical engineering drawings .
The Chinese standard classification for "gb7242" includes: Optical instrument in general .
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
- GB/T 7242-2010 Centering error of lenses
- GB/T 7242-1987 Centering errors of lenses
