Air replacement cup:it suitable for direction measurement, and agricultural intelligent wind speed direction measurement,replacement anemometer cup Anemometer sensor:widely used for wind direction measurement in greenhouses, environmental observation, weather stations,wind cup sensor Wind measurement cup:well-made of and sturdy materials, safe and practical for lasting using time,professional anemometer cup Wind meter tool:small rotational resistance, accurate measurement, small size, light weight, easy to carry and assemble,wind sensor Wind meter sensor:effective wind speed monitoring, it's the wonderful and practical a weather observation lover,wind meter, Weight: 0.10692419707 pounds, Manufacturer: Gishbjka