PEAKMETER PM6252A Digital Wind Speed Meter Air Volume Measuring Anemometer Features: 1. 2. This meter is a portable, professional measuring instrument with large-screen LCD and backlight. 3. This meter can be used for hand-held or fixed measurement. 4. It has the functions of data hold, maximum, minimum, etc. 5. This product can provide a low battery indicator.   Specification: Condition: Model: PM6252A   Range Precision Resolution Wind Speed 0.80~30.0 m/s ±(2.0% reading + 50) 0.01m/s 80~5900 ft/m ±(2.0% reading + 50) 1ft/m 1.40~108.0 km/h ±(2.0% reading + 50) 0.01km/h 0.90~67.20 mile/h ±(2.0% reading + 50) 0.01mile/h 0.80~58.30 Knots ±(2.0% reading + 50) 0.01knots 1.30~98.50 ft/s ±(2.0% reading + 50) 0.01ft/s Wind Flow 0~9 9 9 9 0 CFM (Area)0 - 9.999 ft2   0~9 9 9 9 0 CMM (Area)0 - 9.999 ft2   0 t o 9 9 9 9 CMS (Area)0 - 9.999 ft2   Power 1 * 9V 6F22 Batteries(not included)     Weight: Approx. 292g / 10.3oz Size: Approx. 165 * 85 * 38mm / 6.5 * 3.4 * 1.5in   Package List: 1 * Anemometer 1 * Black Bag