The tool consists of several key parts designed to simulate high-pressure fuel delivery:Dual-Scale Pressure Gauge: The large circular dial at the top typically measures pressure in both BAR (0–400 or 600) and PSI (0–6000 or 8000), allowing for precise monitoring of opening pressures.Hand-Operated Lever: A long black handle used to manually pump fuel or test fluid through the system to build pressure.Fuel Reservoir: A semi-transparent white cup or container that holds the diesel fuel or specialized testing fluid.Adjustment Valve: A black knob used to control or release pressure during various testing phases, such as leakage tests.Heavy-Duty Body: Often made from cast iron or stainless steel with a mountable base for stability during use.