نوافذ دائرية بجودة تجارية، كوارتز منصهر من الدرجة التجارية G1

Was a bit worried about the thickness tolerance for my setup, but these windows are dead on at +/- 0.125mm. The fused quartz material feels incredibly solid and the edges are cleanly finished.

The surface quality is noticeably flawless, with no visible scratches or digs under inspection. I was also impressed by the tight diameter tolerance, which made it fit perfectly into my optical setup. Exactly what I needed for precision work.

The parallelism on these is seriously tight, I measured under 5 arc minutes on my setup and both faces read clean. Surface quality came in better than the 60-40 spec too, no digs anywhere I could find.