G, Series hydraulic pressure gauges provide accurate readings and are glycerin filled to protect pressure sensing parts against vibration, Sudden pressure, And moisture changes. Descriptionmodel g2531r series g collection of tools designed for industrial workholding applications tools this g, Series liquid filled pressure gauge contains glycerin to protect pressure sensing parts sudden pressure, From vibration 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 covering a spectrum starting at 100 to 15000 psi 7 to 1000 bar . When using your gauges for high, Cycle applications, We recommend using gauge snubbers or needle valves. Calibrated in dual scale reading in psi and bar all pressure sensing parts sealed and dampened by glycerine for long life includes safety blow, Out disk and pressure equalizing membrane gauge snubbers or needle valves recommended for high cycle applications