Cobb Sizing Tester

Basically Cobb Tester consists of a support frame  and a metallic cylinder about 5 cm high  with an internal cross section  of 100.00 cm2 (11.29 cm internal diameter).

Clamping System :
The cylinder is clamped by spring loaded upper plate lined with rubber mat automatically get clamped  as soon  as you release the handle. The base board is covered with a rubber mat. The test piece on top by the mat so that a leak proof scale is formed when cylinder is clamped.

The  lower edge of  the cylinder   is machine smoothed. The inner surface  of the cylinder is provided with a shallow groove which is parallel to the cylinder axis  and bends  over the  rim  of the cylinder.  The groove helps in  draining off the water after test.
 
A further development of the well  known Cobb Sizing Tester. The liquid container, filled the specified  amount of liquid, can be turned up-side down by means of a knob and after the necessary time has elapsed, turned back again, can be used several times before liquid  has to be renewed. The lid is provided  with spring loaded finger.

A stainless steel roll of 20 cm face and weighing 10.0 + 0.5 kg as been provided to apply for blotting the water.