• BS 2738-2:1989

BS 2738-2:1989

Spectacle lenses-Specification for tolerances on optical properties of uncut finished lenses

BSI Group , 02/28/1989

Publisher: BS

File Format: PDF

$132.00$264.16


Permitted tolerances on prescribed lens power, cylinder axes, optical centration and prismatic power of lenses. Marking requirements are specified and recommendations are given regarding subjective characteristics.

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