Durable aluminum and stainless steel construction. Low starting threshold. Stainless steel bearings. Wind speed is measured using a sealed reed switch which provides a series of pulses at a rate proportional to wind speed. Aluminum cups are used for durability.
Wind direction is measured using an aluminum vane directly coupled to a precision potentiometer.
Variations in wind direction produce a corresponding change of voltage, which lends itself to both digital and analog measurement systems. Cable length may extend hundreds of feet without affecting measurement performance.