The Dry Leak testing machines are used to leak test components for porosity or leakage due to any damage. The medium for the test is air.The testing is done using a pressure decay method with a specified test pressure and an allowable leak rate. The interfacing of the machine and controls is done with an imported indigenous leak detection instrument, The photograph shows a dry leak testing machine for a four cylinder head. Cylinder blocks, brake system components, or any similar components can be checked using this method.