... easy to carry FunctionQDF -6 Digital anemometer (also known as QDF-6 hot ball Anemometer)can be measured in different ... range of low air velocity measurements. CharacteridticQDF -6 Digital anemometer is a kind of portable instrument Compact design, small ... volume, stable performance, easy to carry ApplicationQDF -6 Digital anemometer is widely used in indoor heating, indoor ventilation, air ...