More compact than the Type 4, the Airflow Type 5 Precision Manometer Test Set was developed to meet the needs of engineers whose requirements do not extend to quite such high pressures, and who do not normally need the facility of using two manometers simultaneously. Each manometer has a reservoir tank with a built-in metal bellows system which allows fine settings of the fluid level without changing the calibration. Once set up, the instrument panel is accurately leveled with a three-point rapid leveling system using a precision compound built-in spirit level. The close fitting of the scale to the glass tube minimizes parallax and the choice of manometer fluid ensures a crisp meniscus for accurate reading. Each instrument is individually calibrated and comes complete with a Pitot static tube, connecting flexible tube, spare fluid and a manometer balancing valve which isolates the pressure signal to allow zero checking without disconnecting the pressure lines.