The portable anemometer provides fast accurate readings with digital readability and the convenience of a remote sensor separately, Multi-functions for air flow, ℃, ℉ temperature measurement, Low-friction ball-bearing design resulting in accuracy at both high and low velocities, Conventional twisted vane arms, always a source of unreliability have been eliminated, Wide applications : use this anemometer to check air conditioning & heating systems, measure air velocities, wind speeds,