Fluorescent lighting has been employed to illumine the instrument panel of army airplanes without throwing a glare into the pilot’s eyes. Luminous paint is applied to standard instrument dials, and is made to glow under the invisible light from three fluorescent lamp assemblies mounted between seats and instrument board. Figures, scale divisions and range markers on a score of instruments shine softly but clearly, some red, others vivid green. A special four-watt, six-inch ultra-violet lamp was developed, and a filter glass shuts out the germicidal and sun-tanning rays that might be injurious to the pilot.