The wind wizard is neat; however, it doesn't account for conflicting winds and multiple wind speeds over distance. The average ML shooter prolly don't shoot at a great enough distance for the wind wizard to be feasible. That being said I own 2 of them. As far as the Beaufort wind scale it is handy to know. It is taught in the Scout Sniper Course at Ft Benning, GA. It is very handy to judge multiple wind speeds over greater distances.