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Old 06-09-2019, 09:55 AM
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Merlin66 (Ken)
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Join Date: Oct 2005
Location: Junortoun Vic
Posts: 8,909
Scratch and Dig optical specs??

The scratch and Dig specs are usually mentioned "Scratch and Dig 60/40"
What does this mean to quality performing optics???
Read on:
https://www.photonics.com/Articles/U...l_Guide/a57165

I wonder where the "Super Polish" surface would measure????
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