GTI Graphiclite transparency viewers are designed for viewing transparent materials under controlled, standardized illumination. The range includes GL and GLX models with different viewing areas to suit different work formats.

GL viewers feature D5000 viewing compliance, Graphiclite 100 color viewing lamps, and a spectrally balanced reflector and diffuser. GLX models are designed for strict photographic and graphic-arts D5000 compliance and offer a non-glare Plexiglas viewing surface, uniform luminance, and optional lamp monitoring or dimming on selected models.