The water drains vertically from a transparent supply tank through a nozzle due to the hydrostatic pressure. The velocity of the jet can be measured with a Pitot tube and a
U-tube manometer. The jet diameter is measured with a micrometer. 5 easy interchange nozzles are included. The water level can be set precisely using an overflow. The water supply is provided either from the laboratory mains or using the Hydraulic Bench.