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.
There are also winds that blow from the north, southwards and also those from the south blowing northwards. Anemometers. Anemometers measure the direction of winds. They come in different models but use a similar principle â cups on a bar! It simply works like this: the faster the wind, the faster the cups rotate. The speed of the rotating cups is measured by a speedometer. Another instrument in wind measurement is the wind vane. It involves a pointer mounted on a vertical shaft. When the wind blows, the arm sways until the pointer faces the direction of the wind. These days, there are some really cool technology that meteorologists use to measure air pressure, speeds and direction.
Rating Newest Oldest. 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.