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. At KestrelMeters.com, we’re proud to offer these robust, reliable instruments to you!