Displays an automotive cylinder leak-down tester kit (commonly referred to as a TU-21 type kit). It is a diagnostic tool used by mechanics to determine internal engine health by measuring how well an engine's cylinders hold compressed air. [1, 2, 3, 4]
Key Components Visible
Dual Gauges: The top gauge measures the incoming shop air pressure (PSI and kg/cm2), while the bottom gauge tracks the percentage of cylinder leakage, color-coded for low, moderate, or high leakage.
Pressure Regulator: The black knob assembly at the top regulates the compressed air entering the tool.