高空工作的風速監察
* 吊船工作安全指引:  可承受每秒 14 米的持續風速 / 強達每秒 31 米的陣風。
**天秤工作安全指引 : 風速超過每小時62公里，立即停止吊秤工作。
 
This Air velocity meter is very economical. With this air flow meter you can measure wind speed and air temperature. Once you have the right cross section, the Air velocity meter will show the air flow. All the test instruments come manufacturer calibrated. ISO certification can be made as an option.