An anemometer with a 54mm impeller who measure wind strength without worrying about his position. The Skywatch® Eole is energized by two replaceable AA batteries. The display is made up 99.9 at the 10th, then to the unit. The aluminium base with a thread allows its mount on a camera tripod. Display: Instant windspeed, Maximum windspeed, Average windspeed (3s to 24h) in km/h, mph, m/s, fps, knots and bft. Precision: +/-3 % from -10° to +50°C. Measuring range from 2 to 150 km/h.