Typical logarithmic wind profile in the surface layer, in neutral conditions (Stull 1988). M is the average wind intensity, z the altitude. In the superficial layer the wind speed grows approximately with the logarithm of the height. The profile differs slightly from the logarithmic trend in conditions of unstable stratification.
1:100 Scale dwg file (meters)
Conversion from meters to feet: a fast and fairly accurate system consists in scaling the drawing by multiplying the value of the unit of measurement in meters by 3.281