How Much Do Diamond Engagement Rings Cost. There are two major factors which contribute to the cost of a diamond: a ratings system called the âFour Csâ and whether or not the diamond is ASG/GIA certified. The Four Cs refers to the diamondâs color, cut, clarity, and carat size.
Best Answer: A wind vane is used to tell wind direction. The National Weather Service and those that have a lot of money use a Aerovane. Aerovanes are commonly used at many weather stations and airports to measure both wind direction and speed.
Best Answer: The windvane is used to detect wind direction. the Anemometer is used to detect wind speed. Below there are some deffinitions from the National Weather Service. on weather insturements. I know because I have a weather station here at my home and I am a SKYWARN Spotter for the U.S. National Weather Service. An instrument used for measuring the speed of the wind. An instrument used for measuring air pressure.