Skywatch Atmos handheld meter for wind speed, temperature and humidity monitoring. Measuring Range (Wind): 2 to 150km/h, displayed in km/h, mph, m/s, fps, knots and bft. Instant, Max and Average (Selectable, 3 seconds to 24 hours) Wind Speeds. Measuring Range (Temperature): -40 to +80°C. Instant, Min and Max values, plus ...