Kestrel 1000 Pocket Wind Speed Meter

Measures instantaneous, maximum and average wind speeds.
(Measurement unit options are knots, meters per second, kilometers per hour, miles per hour, feet per minute and Beaufort.) Measurement units can be changed at any time. Accurate, tough and affordable. Requires no setup. (Just hold it up to measure wind speed.) Large, easy-to-read liquid crystal display. Ultralight impeller turns on jewel bearings. Excellent accuracy (+/-3%). Measure down to 0.3 m/s. Impeller and protective housing pop out for easy and inexpensive replacement. Built to withstand daily use in tough outdoor conditions. Includes slip-on hard case that protects the impeller, buttons and display from damage in your pocket or toolbox. Completely waterproof and it floats! The replaceable battery provides 400 hours of use. 1 year warranty.