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BS 2738-2

1989 Edition, February 28, 1989

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Spectacle Lenses Part 2: Specification for Tolerances on Optical Properties of Uncut Finished Lenses

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Superseded By: BS EN ISO 8980-2

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W/D S/S BY BS EN ISO 8980-2 AND BS EN ISO 8980-2
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Description / Abstract:

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.