National Metrological Verification Regulations of the People's Republic of China
Latest
JJG 579-2010
Scope
This procedure is applicable to the initial verification, subsequent verification and in-use inspection of all types of full-aperture and reduced-aperture trial lens boxes.
JJG 579-2010 history
2010JJG 579-2010 Verification Regulation of Trial Case Lenses
1998JJG 579-1998 Verification Regulation of Trial Case Lenses