Testo 635 https://fat-egypt.com/wp-content/uploads/2014/04/testo-635-1.jpg 220 270 Future Advanced Technology Future Advanced Technology https://fat-egypt.com/wp-content/uploads/2014/04/testo-635-1.jpg April 9, 2014 March 24, 2023 Testo 635 offers the possibility of testing and analyzing air humidity, material moisture, U-value and the dewpoint in compressed air systems. a wireless measurement over up to 20 m distance. For more information