Developed for use under various challenging field conditions. Its different impellers measure almost any fluid, liquid or gaseous medium. Fluid measurements can be taken in knots, km/ h, mph, and m/ s. The meter also takes temperature measurements in either ° F or ° C, including minimum and maximum temperature and current temperature. Also included is a wind speed impeller which allows you to take air velocity and wind chill measurements. To take flow measurements from a bridge or other elevated location, use the optional flow sensor with 15 meter cable ( sold separately) . Kit includes the display, 2m telescoping rod, a 60mm water impeller, 25mm air impeller and carrying case. Weatherproof.

Specifications:

Accuracy: ± 2% fluid speed; ± 3% air velocity; Temperature, ± 1° F ( ± 0.2° C) . Range: Fluid Speed, 0.2 to 40 mph ( 0.1 to 18 M/ Sec) depending on impeller; Temperature, -58° F to 212° F ( -50° C to 100° C) . Resolution: 0.3 km/ h; 0.2 mph; 0.2 knots; 0.1 M/ Sec. Temperature Modes: Minimum, maximum, current temperature, wind chill factor. Operating Modes: Current, maximum and average fluid speed. Power: 2 " AA" Batteries ( included) . Dimensions: Display, 5.25" x 2.25" x 2.5" ; Case, 25" x 13" x 3" . Warranty: 1 Year.