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Custom Polishing
For many applications where high resolution is required, the
standard commercial polish may not be adequate. Andover offers
many different types of substrates polished to a higher degree
of optical quality and to more exacting specifications. The standard
commercial optical quality is typically a flatness of 3 to 5
waves per inch and parallelism of 3 arc minutes or better. Our
high quality polishing is a flatness of 1/4 wave per inch and
parallelism of 30 arc seconds or better. The surface quality
specification is also much higher: 40/20 for our high quality
polishing, and 80/50 for our commercial quality. If your application
demands an even higher degree of optical quality, please contact one of our application
specialists for more information.

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