Daily Archives: March 31, 2020

SAPPHIRE WINDOWS WITHSTAND EXTREME TEMPERATURES & PRESSURES. Custom fabricated sapphire optics that can withstand high temperatures and pressures, plus fast moving particles, making them ideal for aerospace applications are available from Meller Optics, Inc. of Providence, RI. Meller Sapphire Lenses, Windows, and Domes feature Mohs 9 hardness which is second only to diamond, are chemically […]