or
Field Pack with Pen-Ray Lamp, Portable, Shortwave UV, 254nm phosphor/jacket, Lighted 1 3/4 in. long, Quartz, 0.375 in. dia., DC power supply (9V battery), 3 3/4 L x 2.38W x 1.0 in. H (9.5 x 6.0 x 2.5cm)