This method is based on the application of Stoke’s law to the fall of spheres through the liquid. With the help of this apparatus, we can determine the viscosity of a transparent liquid like glycerine or caster oil.A corning glass tube of 35mm dia and one meter long is made to stand firmly in between two upright bars with the help of clamps on a heavy cast iron base. The lower side of tube is closed, whereas on the upper end a rubber cork with hole is provided. Supplied with medium wall borosilicate glass tube. Glass tube is graduated in centimetres from 0 to 100 cm.