The apparatus consists of a floor-standing 2.5-metre flume fabricated from transparent acrylic and anodised aluminium, together with various gates, weirs and blocks, enabling the phenomenon of flumes to be easily demonstrated and studied. A 50 mm wide 2.5 m long flume complete with models and instruments for demonstrating flow around weirs and other objects in an open channel. The equipment is designed primarily for use with Digital Hydraulic Bench which provides the necessary water supply, drain and digital flow-measurement facilities.