KestrelMeters.com

At KestrelMeters.com and Nielsen-Kellerman, makers of Kestrel Meters, weather is serious business! NK been researching, designing, manufacturing and distributing Kestrel Meters for 10 years. NK's founders and lead engineers, Richard Kellerman and Paul Nielsen, are determined to make the most accurate and reliable hand-held weather devices available. They have developed four patented measurement technologies for the Kestrel family and continue to research ways to improve the Kestrel line and create new products to meet customers' needs.

Every single Kestrel manufactured at Nielsen-Kellerman is calibrated for every single value, either directly against NIST-traceable standards or against an intermediary standard that is calibrated daily. The entire Kestrel line is designed and built in the USA. Every unit is shipped with a FREE Certificate of Conformity that states what calibrations were performed, and the certified performance specifications.