Testo 312 https://fat-egypt.com/wp-content/uploads/2014/04/testo-312-1.jpg 220 270 Future Advanced Technology Future Advanced Technology https://fat-egypt.com/wp-content/uploads/2014/04/testo-312-1.jpg April 10, 2014 March 28, 2023 Testo 312 Pressure measuring instrument to check flue gas draught, differential pressure in the combustion chamber compared with ambient pressure or gas flow pressure with high resolution. For more information