DS DS/EN ISO 8429
DS DSEN SO 8429 1996-OCT-22 Optcs and optcal nstruments - Ophthalmology - Graduated dal scale
DS DSEN SO 8429 1996-OCT-22 Optcs and optcal nstruments - Ophthalmology - Graduated dal scale
This International Standard gives specifications for the angular coordinate system to be used in the design of scales, reticles or other display means incorporated in instruments for determining optical data on human eyes or corrective lenses for human eyes.