For measuring the rate of uptake of water by a cut plant shoot. The apparatus consists of a central reservoir with a three-hole stopper holding a capillary tube graduated in millimetres, a funnel with stopcock and a short length of 10mm glass tubing, to hold the plant shoot.

Reservoir 100mm high x 65mm dia., capillary tube 390mm long with 1mm bore, graduated 0-300mm x 1mm, funnel 25ml.