Testo 0560 4160 416 vane anemometer testo 0560 4160 p the testo 416 vane anemometer gives you quick and reliable airflow readings on an easy to read back lit display p p the permanently connected telescopic sensor which can be extended to a maximum length of 890mm and a mini vane that has a diameter of 16mm make the anemometer ideal for measuring the airflow and air volume in air ducts p testo 0560 4160 416 vane anemometer