NF EN ISO 851998 : 1998
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
OPTICS AND OPTICAL INSTRUMENTS - FOCIMETERS
01-11-2014
12-01-2013
Defines requirements for continuously indicating focimeters and digitally rounding focimeters with which the vertex 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.
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