Digital anemometer the portable anemometer provides fast accurate readings with digital readability and the convenience of a remote sensor separately. multi-functions for air flow measurement: m/s, km/h, ft/min, knots. 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. data hold. compact housing cabinet. wide applications: use this anemometer to check air conditioning & h