The Impact of a Jet apparatus consists of a cylindrical clear acrylic fabrication with provision for levelling. The dead weight of the moving parts is counter-balanced by a compression spring. The vertical force exerted on the target plate is measured by adding the weights supplied to the weight pan until the mark on the weight pan corresponds with the level gauge. A weight carrier is mounted on the upper end of the stem. A total of four targets are provided: a flat plate, a 120 cone and a hemispherical cup. Water is fed through a nozzle and discharged vertically to strike a target carried on a stem which extends through the cover.
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