The Testo 510 (0563 0510) Differential Pressure Measurement Kit with Digital Manometer and Hoses measures differential pressure in the range from 0 to 100 hPa. The differential pressure measurement is temperature-compensated for accurate measurement values. The measurement values can be displayed in Pascal over the entire measurement range. Magnets at the rear permit free-hand work. The backlit display allows the measurement values to be easily read out, even in unfavorable light conditions. The testo 510, in combination with a Pitot tube, measures air flow velocity. For accurate measurement values, the air density can be compensated. The 510 Differential Pressure Meter is very handy, small and easy to operate.