Filters, Windows & Reticles

BAUSCH & LOMB 2"X2" DICHROIC SPECTROMETER FILTER SLIDE, 44-78-665-669 665-669nm passthrough wavelength Units are in excellent condition, comes in manufacturer's leather pouch. Finish is a bit hazy, but cleans up nice with a gentle but firm rub with a...

BAUSCH & LOMB 2"X2" DICHROIC SPECTROMETER FILTER SLIDE, 44-79-645-649 645-649nm passthrough wavelength Units are in excellent condition, comes in manufacturer's leather pouch. Finish is a bit hazy, but cleans up nice with a gentle but firm rub with a...

One wiseacre assumed we meant any package leaving our shipping room that once had a glass object in it. That is a malicious rumor. . . Ground glass is thin plate glass, the surface of which has been physically ground or...