... , environment monit-or, navigation measurement, weather forecast, collection of the weather datum for outdoor busywork and fire ... digit LCDMeasurement units Air Velocity: m/s, km/h, ft/min, knots Air Flow: CMM (m³/min); CFM (ft³/min) ... Beaufort Scale: Force Wave Height: m Direction: °from the North direction Temp: °C & ... sec) 0.4-45.0 0.1 m/s ± (2%+0.1m/s)km/h (kilo-meters/hour) 1.4 ...