Wind Direction Device 風向儀 JAPAN
手持或座檯亦可, 設風壓板 0~90degree 確定風上下吹之角度風向板以確定風向
箭長200mm , 高270mm
To tell you wind direction , with wind pressure board 0~90degree to indicate the angle of wind coming.
arrow 200mm , height of device 270 mm
Item no : JP 142-230