Anemometer Air Velocity Meter à¤Ã×èͧÇÑ´¤ÇÒÁàÃçÇÅÁ à¤Ã×èͧÇÑ´ÅÁ CFM CMM Meter Flow Meter à¤Ã×èͧÇÑ´»ÃÔÁÒµÃÅÁ »ÃÔÁÒ³ÅÁ CFM/CMM > Heavy Duty Hot Wire Thermo-Anemometer 407123 Heavy Duty Hot Wire Thermo-Anemometer 407123 Telescoping probe is designed to fit into small openings and measure airflow down to 40ft/min Telescoping probe is ideal for measuring in HVAC ducts and other small vents; extends up to 4ft (1.22m) long Super large 1.4" (36mm) dual LCD display Min/Max, Data Hold Specifications: Range Resolution Accuracy (%rdg+digits) Measurement: 0.2 - 20.0 m/s 0.7 - 72.0 km/h 40 - 3940 ft/min 0.5 - 44.7 mile/h 1.0 - 31.1 knots 0.1 m/s 0.1km/h 10 ft/min 0.1 mile/h 0.1 knots ±(3%+1d) ±(1%+1d) full scale whichever is larger Temperature (°C): 0 to 50°C 0.1°C ±0.8°C Temperature (°F): 32 to 122°F 0.1°F ±1.5°F Dimensions/Weight: Meter: 7 x 2.9 x 1.3" (178 x 74 x 33mm) /17oz (482g) Probe: extended 37"(94cm) Probe Diameter: 0.5" (1.3cm) 407123 Anemometer Extech Flow Meter Hotwire à¤Ã×èͧÇÑ´¤ÇÒÁàÃçÇÅÁ à¤Ã×èͧÇÑ´»ÃÔÁÒµÃÅÁ à¤Ã×èͧÇÑ´ÍѵÃÒ¡ÒÃäËÅ