Aluminum bracket is used to fix the hair dryer, adjustable bracket is used to adjust the distance of 0-200MM, and the adjusting precision is 1MM. 

The wind pressure is measured by electronic scale with 485 communication function  Precision 0.01 g, relevant test data may be transmitted by data.

Test method: under the condition of high-speed cold air, the air outlet is perpendicular to the electronic scale, the distance is 10CM, read the value.