Nielsen-Kellerman Company designs, manufactures and distributes rugged, waterproof environmental and sports performance instruments for active lifestyles and technical applications, including Kestrel Weather & Environmental Meters, Kestrel Ballistics Meters for long range shooting accuracy, NK Electronics for Rowing and Paddling, and Blue Ocean Rugged Megaphones PA Systems. Customer Service and Commitment Nielsen-Kellerman has been in business for more than 40 years, and has fo...