DS DS/EN ISO 9342-1
DS DSEN SO 9342-1 2005-SEP-08 Optcs and optcal nstruments - Test lenses for calbraton of focmeters - Part 1 Test lenses for focmeters used for measurng spectacle lenses
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This part of ISO 9342 specifies requirements for test lenses for the calibration of focimeters that are used for the measurement of spectacle form lenses.