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Ocular Lensometer
Test the lens degrees:
Spherical power
Astigmatic power
Clear power
This equipment shall be installed 10.67M ( ¡¾0.02M )
away from the end of the telescope, at the same level,
is an illuminated, optical target which the operator observes through the telescope and test sample eye protectors.
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Standard Compliance: ANSI Z87.1-2010