East Wind Lapidary, 61 Main St, Windsor, VT 05089, US

Labsphere, a subsidiary of X-Rite Incorporated based in Grandville, Mich., is one of the most experienced suppliers of light measurement technology in the world. It specializes in the design and manufacture of integrating spheres and systems and instruments for a variety of electro-optical test and measurement applications, including lamp flux measurement, display measurement, reflectance and transmittance measurement and radiance and irradiance applications. Its product lines feature more than 100 systems and accessories that serve many industries, including telecommunications, automotive and military. Labsphere is based in North Sutton, N.H.