LUTRON HOT WIRE ANEMOMETERModel : AM-4204HA* 0.2 – 20.0 m/s, high precision for low air velocity measurement.* m/s, ft/min, km/h, knots, mile/h, oC/oF.* Max., Min., Data hold.* Telescope probe.* Size : 185 x 78 x 38 mm.