Ultra Light* pupil gauge is a quality, rugged, yet affordable penlight. It features a pocket clip and push button endcap switch. Superior brightness. Approximately 5 1/4inch in length. Uses two AAA batteries, included), red
Handheld series. Made of impact-resistant ABS plastic which resists deterioration from heat or chemicals. Wavelength: shortwave (254nm). Relative intensity at 7.6cm: 2250uW/cm2. Dimensions: 37.8Lx8.1Wx6.4Hcm. ETL and ETLc approved. 115V. 6W.