Manometers are airflow meters that capture both air pressure and air velocity measurements. Manometers can measure very low pressures such as static and differential pressure across filters and between rooms. In conjunction with a pitot tube, a manometer can convert pressure readings into air velocity (FPM) and volumetric (CFM) measurements. Without moving parts, manometers maintain their accuracy without recalibration. They are great for technicians who need a simple solution for diagnosing ventilation and IAQ issues.