HM 220 Airflow Study Unit
1 reducer, 2 Pitot tube insert, 3 pipe section with measuring glands, 4 nozzle/orifice measuring insert, 5 16-tube manometer, 6 iris diaphragm, 7 various fittings, 8 radial fan, 9 aperture, 10 adjustable Pitot tube for open jet measurement, 11 switch box, 12 laboratory trolley