This Marion Fluid Power Pressure Differential Indicator is a reliable tool for measuring the pressure difference between two fluids. Its precision and durability make it a top choice for professionals in various industries. The indicator is designed to work with a range of hydraulic and pneumatic systems, making it a versatile addition to any toolkit. With its easy-to-read gauge and durable construction, this pressure differential indicator is perfect for those who need to measure pressure accurately and reliably. Whether you're a professional mechanic, a plumber, or a hydraulics expert, this indicator is a must-have tool for your kit.