The Testo 410-1 (0560 4101) Vane Anemometer offers reliable flow velocity measurement results in a handy pocket format. The small, user-friendly testo 410-1 measures air flow velocity and temperature, and is suitable for fast spot checks on ventilation outlets. Simple to use and feature packed, the testo 410-1 Vane Anemometer incorporates the superior vane sensor technology found in Testo’s comprehensive line of vane anemometers. Additionally, this handy pocket anemometer measures wind speed (knots) and wind chill. A timed mean value calculation is also possible. The measuring instrument has an illuminated display, a clip-on protective cap, and a wrist strap and a belt holder ensure safekeeping. The menu-driven three button design allows for easy selection of various functions. The unique hard shell protective cap snaps on and off the meter. When in use, the cap fully encases the meter, protecting the whole unit (including the display screen), allowing for complete protection from the elements.