This G-Series Liquid Filled Pressure Gauge contains glycerin to protect pressure sensing parts from vibration, sudden pressure changes, and moisture. The dual scale face shows both psi and bar readings, and the extensive range includes a wide selection of models with maximum working pressures ranging from 100 to 15000 psi (7 to 1000 bar). When using your gauges for high-cycle applications, we recommend using gauge snubbers or needle valves.