The Testo 510 Digital Differential Pressure Manometer is an essential tool for heating installers and air conditioning engineers. This precise instrument measures differential pressure from 0 to 100 mbar, making it ideal for checking filters on air conditioning systems and measuring static gas and gas flow pressure on heating systems. Key Features: Versatile Unit Selection: The testo 510 allows you to select from various units including Pa, hPa, mbar, mmH2O, mmHg, inH2O, inHg, psi, m/s, and fpm. Flow Measurement: Measure flow in ventilation ducts using an optional Pitot tube, with a range of 10 to 100 m/s. Practical and Precise Advantages: