The testo 510 digital manomenter is an all in one, low pressure measurement solution. The 510 can measure total external static pressure, differential pressure, duct velocities, manifold pressures, and air flow with pitot tube (optional). With the testo 510, performing system tests has never been easier using our single, easy to use, rugged, compact digital manometer. Its small form factor, bright backlit display, and magnetic backing will enable the 510 to be used in a wide variety of applications.