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PARKS OPTICAL Certificate of Optical Quality and Authenticity
It is hereby certified that this mirror has passed a series of critical optical precision tests and carries a full lifetime warranty from PARKS OPTICAL against manufacturing and material defects. PARKS OPTICAL further guarantees that this mirror:
* Was manufactured from fine annealed, low-expansion Pyrex glass.
* Is guaranteed to be diffraction-limited for superb visual and photographic images.
* Passes the sensitive, double-pass autocollimation test with a 200 Line Ronchi Grating.
* Passes the Foucault test for paraboloidal accuracy.
* Will meet or surpass the Rayleigh Criterion of optical precision.
* Was individually figured, tested, and serialized by Parks Optical.
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