Calcium Fluoride (CaF2) Viewport, 157 Grade, UHV Rated Vacuum Optics, 0.90" View Dia, 2.75" Conflat Flange
Calcium Fluoride (CaF2) Viewport, UHV Rated Vacuum Optics, 0.40" View Dia, 1.33" Conflat Flange
Calcium Fluoride (CaF2) Viewport, UHV Rated Vacuum-Optics, 0.90" View Dia, 2.75" Conflat Flange
Calcium Fluoride (CaF2) Viewport, UHV Rated Vacuum-Optics, 0.90" View Dia, 2.16" Quick Flange
Calcium Fluoride (CaF2) Viewport, UHV Rated Vacuum-Optics, 0.90" View Dia, 2.95" Quick Flange
Calcium Fluoride (CaF2) Viewport, UHV Rated Vacuum-Optics, 1.88" View Dia, 4.50" Conflat Flange