I have optical flats in full thickness fused quartz (one each)
6inch, 8inch, and 10inch. The 6inch flat may be a plane parallel
(appx one inch thick) finished both sides. Each flat is supposed
to be appx. 1/20 wv flat. These were all made at the Univ of Ariz.
Optical Shop (Lunar Planetary Lab), are in good to mint condition
and have been in storage in cotton since. Please make offer per each
"as is" - none are certified. I am willing to sell each "as is" without
certificates (or will advertise later after testing w. certificates
at higher prices). For example, I anticipate the 6" flat will sell
"as is" in the $300-$400 range and higher if tested & certified.
Full satisfaction of buyer is of course guaranteed. Shipping to buyer.
J Warner (email@example.com