A superior and sturdy apparatus. A Borosil glass tube of about 30 cm dia and one meter long is made to stand vertically firmly in between two upright bars with the help of clamps on a heavy cast iron base. Both sides of the tube are open. On the lower end a rubber cork without holes is fitted whereas on upper end a rubber cork with a funnel is provided. With two rubber band index mark and 6 steel balls of different diameter. Without lead shot..
In this, we can determine viscosity of liquid by oscillating disc method described by O.E. MAYER. A flat disc is suspended horizontally by a phosphorous bronze suspension which is attached to a rod rigidly fastened to the center of the disc. This rod carries a cross bar whose ends have a screw thread, along which two masses are screwed to balance the disc horizontally. A small concave mirror is fastened to the rigid support, complete mounted on base, but without lamp and scale outfit.
It is used for measuring viscosity of very viscose liquids. The outer cylinder can be clamped at any desired height and the inner cylinder is graduated in mms and slot is covered by a transparent cover. Complete with scale pans and releasing pin.