The 5200 professional environmental meter provides weather and building performance readings. The pocket-sized device records wind and air flow, temperature and humidity anywhere on site, and provides special readings for pouring concrete and commissioning HVAC system. The meter provides a direct readout of the American Concrete Institute’s evaporation rate formula. Readings can be stored. The display is sunlight readable with large numerals. The unit is 5-in. long and weighs slightly more than 4 oz. and operates on a single AA battery.