Anemometer Air velocity meter AVM-712 Specifications: 1. 3 Measurements in one instrument. Air flow: CMM( M3min) and CFM(FT3min) Air velocity: ms, ftmin, kmh, knots, mileh. Air temperature: Degree C and F. 2. 3 air flow mode: Instant, 23rd Velocity Max, Average 3. This instrument use Low friction ball vane wheels to make sure high accuracy in high and Low velocities. 4. Large LCD dual display 5. Recall function for maximum and minimum record 6. Data hold function 7. High accuracy and special function built-in micorcomputer circuit design. 8. Auto power off 9. Use fast-response-time Thermistor sensor for temperature measurement. 10. Low battery indicator 11. 006P DC 9V battery operation 12. Seperate probe for different environment measurement. 13. With hard carrying case 14. Wide applications for air conditioning & heating sytems, measuring air velocities, wind temperature