Mfr # 12845. Euro Black 2 Oil Pressure Gauge 100 PSI Perimeterlighted Black dial with bold White graphics, Black aluminum bezel, contoured White pointer and flat glass lens A pressure gauge operates by sending a low amperage current through the gauge's meter to ground via a sending unit with variable resistance The resistance of the sending units increase or decrease with the changes in pressure, temperature, etc As the sender's resistance varies, the amount of current allowed to flow through it to ground changes and the meter deflects, showing the change in pressure 2 Hole size 20625 53mm Specifications Antiscratch glass lens 12 VDC negative ground Perimeterlighted Black dial Can be adapted for 24 VDC systems Dual Scale Imperial and Metric Factory PN GP9597 Sold as an Individual Gauge Cover not Included Euro Black 2 Oil Press Gauge 100 Psi
