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View larger ISO 8598:1996 [ Withdrawn ]
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ISO 8598:1996 Optics and optical instruments -- Focimeters
standard by International Organization for Standardization, 08/01/1996
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Full Description
This International Standard specifies requirements for continuously indicating focimeters and digitally rounding focimeters with which the vertex powers and prismatic powers of spherical and astigmatic lenses, including lenses mounted in frames and contact lenses, can be measured and with which lenses can be orientated and marked.