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.
Help your wind expert complete the compass rose worksheet to show the direction of the wind for the season that you will be broadcasting! Do you know what a weather vane is? A weather vane is a weather instrument that measures wind direction. Wind is moving air, it can be moving different directions at different times. A wind vane looks like this: