The asi datamyte model 501 data collector is an ergonomic handheld unit that weighs under one pound. It is ideal for many mobile data collection operations, especially in confined spaces. The 501 features an lcd panel to display collected information, with a backlight option for use in low-light conditions. The design features keys oriented for either right-or left-hand operation, and the contoured grip reduces operator fatigue and the likelihood of motion injuries. The ruggedly-designed 501 is designed to survive a four foot drop to a concrete surface without loss of function. It resists damage from pooled oil, water-based cutting fluid, abrasives, dust, metal chips and filings.