The G460 multi-sensor atmospheric monitor from GfG Instrumentation is rugged and compact, with a concussion-proof boot along with highly dust- and water-resistant housing. It has completely automatic calibration, one-button operation, top-mounted display, interchangeable battery packs, a highly configurable smart sensor design, and standard data and event logging. Options include a dual-range infrared combustible gas sensor, a motorized pump operable in diffusion or sample draw mode, and up to seven channels of detection. A wide range of additional sensors is available. 800/959-0329; www.goodforgas.com.