WeatherHawk WindMate Hand-Held Weather Meter Measures wind speed, wind direction, temperature, relative humidity, and barometric pressure Displays current temperature and current, maximum, and average wind speed Reports wind direction in both degrees and compass points Calculates head wind, tail wind, cross wind, wind chill, wet bulb, dew point, delta T, comfort index (Accuweather.com patented),altitude and density altitude Displays a 48-hr history using a bar graph or numerical listing