| 
             Primary 
            Measurement 
             | 
            
             Unit 
             | 
            
             Resolution 
             | 
            
             Accuracy 
            (+/-) 
             | 
            
             Range: 
            Max operational 
            Specigication (if less) 
             | 
        
        
            | 
             Wind speed 
            Or Air Velocitu 
             | 
            
             m/s 
             | 
            
             0.1 
             | 
            
             Larger of 3% 
            Of reading, 
            Least significant 
            Digit or 20 
            Ft/min 
             | 
            
             0.6 to 60.0 m/s 
            0.6 to 40.0m/s 
             | 
        
        
            | 
             ft/min 
             | 
            
             1 
             | 
            
             118 to 11,811 ft/min 
            118 to 7,874 ft/min 
             | 
        
        
            | 
             km/h 
             | 
            
             0.1 
             | 
            
             2.2 to 216.0 km/h 
            2.2 to 144.0 km/h 
             | 
        
        
            | 
             mph 
             | 
            
             0.1 
             | 
            
             1.3 to 134.2 mph 
            1.3 to 89.5 mph 
             | 
        
        
            | 
             knots 
             | 
            
             0.1 
             | 
            
             1.2 to 116.6 knots 
            1.2 to 77.8 knots 
             | 
        
        
            | 
             beaufort 
             | 
            
             1 
             | 
            
             0 to 12 B 
             | 
        
        
            | 
             Temperature 
             | 
            
             oF 
             | 
            
             0.1 
             | 
            
             1.8 oF 
             | 
            
             -49.0 to 257.0 
            -20.0 to 158.0 
             | 
        
        
            | 
             oC 
             | 
            
             0.1 
             | 
            
                    1.0 oC 
             | 
            
             -45.0 to 125.0 
            -29.0 to 70.0 
             | 
        
        
            | 
             Relative Humidity 
             | 
            
             %RH 
             | 
            
             0.1 
             | 
            
             3.0%RH 
             | 
            
             0.0 to 100.0% 
            5.0 to 95.0% non 
            Condensing 
             | 
        
        
            | 
             Pressure 
             | 
            
             InHg 
             | 
            
             0.01 
             | 
            
             Typical 0.04 
            InHg 
            Max 0.07 
            inHg 
             | 
            
             0.30 to 32.48 inHg 
             | 
        
        
            | 
             Wind chill 
             | 
            
             oF 
             | 
            
             0.1 
             | 
            
             1.8 oF 
             | 
            
             Refer to stated ranges for 
            Wind speed 
             | 
        
        
            | 
             oC 
             | 
            
             0.1 
             | 
            
             1.0 oC 
             | 
        
        
            | 
             Heat Index 
             | 
            
             oF 
             | 
            
             0.1 
             | 
            
             3.6 oF 
             | 
            
             Refer to stated ranges for temp.and relative humidity 
             | 
        
        
            | 
             oC 
             | 
            
             0.1 
             | 
            
             2.0 oC 
             | 
        
        
            | 
             Wet Bulb 
            Temperature 
            (psychorometric) 
             | 
            
             oF 
             | 
            
             0.1 
             | 
            
             3.6 oF 
             | 
            
             Refer to stated ranges for temp.,and relative humidity and pressure 
             | 
        
        
            | 
             oC 
             | 
            
             0.1 
             | 
            
             2.0 oC 
             | 
        
        
            | 
             Dewpoint 
             | 
            
             oF 
             | 
            
             0.1 
             | 
            
             3.6 oF 
             | 
            
             Refer to stated ranges for temp.and relative humidity 
             | 
        
        
            | 
             oC 
             | 
            
             0.1 
             | 
            
             2.0 oC 
             | 
        
        
            | 
             Altitude 
             | 
            
             ft 
             | 
            
             1 
             | 
            
             Typical 0.02 
            Max 98ft 
             | 
            
             -2,300 to 85,000 ft 
             | 
        
        
            | 
               
             | 
            
             m 
             | 
            
             1 
             | 
            
             Typical 15m 
            Max 30 m 
             | 
            
             -700 to 25,900 m 
             | 
        
        
            | 
             Battery 
             | 
            
             CR2032, one, included.Average life, 300 hours of use, reduced by backlight use in 2 
             | 
        
        
            | 
             Size & weight 
             | 
            
             12.2 x 4.8 x 2.8 cm, 102g 
             |