This plastic weather vane can be hand-held or permanently mounted to measure wind patterns. Not only is the weather vane easy to mount but it also has removable pieces for customization. This weather vane is great for exploring meteorology and wind science subjects! Our weather vane is a perfect and fun science tool for kindergarten, elementary school and all grade levels. The weather vane can be hand-held or permanently mounted, and has removable pieces for customization. It measures 8" in diameter and is 12" tall.