The Kestrel 5500 does it all - measures altitude, barometric pressure, crosswind, density altitude, dew point temperature, direction (wind direction and orientation), headwind/tailwind, heat stress index, relative humidity, station pressure (absolute pressure), temperature, wet bulb temperature (Psychrometric), wind chill, and wind speed. The Kestrel 5500 features a large, high contrast screen, dual color backlight, scratch- and breakage-resistant window, corrosion-resistant...