Find Kestrel Meters for purchase online at Heat Treat Furnace Parts. The extraordinary range of uses Kestrel instruments provide have made them required equipment in a wide range of professional settings. Firefighters, farmers, HVAC techs and long range shooters all over the world have Kestrel wind speed and weather meters on hand to gather accurate, real-time weather data. Kestrel wind meters and weather trackers are as small as a mobile phone - and cost about the same. Hardly delicate pieces of equipment, Kestrel Meters are tough, immune to the elements, and even float in water.