Handheld UV Magnifier - perfect for the inspection of conformal coatings. Coatings glow brilliantly under UV black illumination especially when magnified through a 5-diopter (2.25X) optical-quality glass lens. Unique combination of (2) 4W UV black bulbs and (2) 4W fluorescent white bulbs is also ideal for the inspection of welds, solder joints, flux residues and hairline stress cracks.