à¤Ã×èͧÇÑ´¤ÇÒÁàÃçÇÅÁ AN90 Pocket-size meter measures air velocity, temperature and windchill. This Dual Function Meter simultaneously measures & displays air speed and temperature of the moving air. Super small in size and light weight but it has wide measurement range. It accurately displays wind speed in m/s, Km/hr, ft/min, knots, mph and temperature in Celsius (°C) or Fahrenheit (°F). It provides current, maximum, and average wind speed measurement plus it indicates wind chill. Also displayed is a Beaufort wind scale bar graph whose reading corresponds to the digital wind speed display. Features: Measure Wind Speed (air velocity) & Temperature simultaneously Choice of readings in meters/second, kM/hour, feet/min, MPH or knots Measuring range 0 to 5860feet/min Max/Average/Current reading function °C/°F Temperature unit selection Large LCD with backlight Manual / Auto power off Wind chill indication With Beaufort scale Low battery