The apparatus consists of a precision-bore glass pipe (test tube) held vertically in a large shroud.
The shroud is open at the front and the inside surface is light coloured.
This allows the students to see the flow clearly.
This arrangement ensures a steady, uniform flow at entry to the test tube.
A thermometer measures the temperature in the constant head reservoir.
A fixed overflow pipe in the reservoir connects to a suitable drain.
They use it to inject a fine filament of dye into the top of the tube.
The dye injector is a dye reservoir connected to a fine hypodermic tube.
Students collect a known quantity of water in a measured time to find the flow rate. Included is a measuring cylinder.
The base of the apparatus has adjustable feet for levelling prior to use (included is a levelling device).
Water enters a constant head tank (reservoir) above the test tube and passes through a diffuser and stilling bed. It then passes through a specially shaped bell-mouth into the test tube.
