Consisting of glass tubing 15mm external diameter with sidearm
leading to a thistle funnel and tapered at each end, one end to
accept the plant stem, the other to meet capillary tubing mounted
against a 250mm graduated rule Apparatus is mounted by Terry clips
on to a strong L-shaped stand with rubber feet. Dimensions 305 x
150 x 175mm length x width x height. Capillary bore 1 mm.