BK Precision 731A 数字风速计（0.4~30米/秒）

Units of Measure: ft/min, m/s, 0 F, 0 C
Airflow Range: 80-5900 ft/min. (0.4 ~ 30 m/sec)
Temperature Range: 14 0 ~ 122 0 F (-10 0 ~ 50 0C)
Resolution: 1 ft/min (0.01 m/sec): 0.1 0 F (0.1 0C)
Accuracy: 2% FS; +- 1.0 0 F (+-0.6 0C)
Power Supply: 9V Battery
Dimensions: 181x71x38mm
Weight: 350g
Included: 9V Battery, Instruction Manual

Manual (PDF)