Designed to determine the dynamic water resistance of leather by means of repeated linear compression in accordance.

The machine should have two pair of cylinders each of diameter 30.0±0.5mm mounted with their axis horizontal and coaxially aligned.

A maximum separation of the cylinders in each pair of 40±0.5mm must be available.

The electric motor drives the moveable cylinder backward and forwards along with the crank motion of 50±5 cycles/minute reducing the separation of the cylinders above in each pair by a throw or amplitude of 1.0±0.1mm; 1.5±0.15mm; 2.0±0.2mm; 3.0±0.3mm; (4.0±0.4mm; or 6.0±0.6mm ) and returning them back to their original separation under a simple harmonic motion.

The above amplitudes of the crank motion are such that the test piece is compressed by 5%, 7.5%, 10%, or 15% respectively when the cylinders approach one another. Ring-shaped clamps such as jubilee clops, of internal diameter adjustable between 30 and 40 mm to fit around each cylinder above.

A method of (Tank) containing a fixed quantity of water around the pair(s) of cylinders so that the water level can be adjusted to a maximum of 5mm above the axes of the cylinders. The tank must be made from non-corroding material.

This included an electrical circuit that indicates when water has penetrated through the test piece. Accessories: 5 packs of absorbent cloth: i.e 100% cotton and weighing about 300g/m2 with manufacturer certificate, 1pcs of cutting die for determination of water penetration test as per the standard.