THE KESTREL METER 1000 FEATURES
●  Protective cover with sure-grip overmolding
●  Data hold function
●  Large easy-to-read display
●  Waterproof
●  Patented user-replaceable impeller
●  Wide range of wind speeds and low startup speed
●  Reliable, portable, and easy to use
●  All instruments and accessories are completely assembled in the USA

Winds can be measured on any Kestrel up to 135 mph. NK only guarantees the accuracy of the measurement to be within tolerance up to 89 mph. Also at those speeds, it is not recommend any prolonged exposure as it could damage the impeller at those speeds for any prolonged length of time. It is similar to being able to measure very hot temperatures outside of the spec range but do not do it for any extended time.