Autometer Ultra-Lite 52mm 2000 PSI Mechanical Nitrous Pressure GaugeA bomb proof meter movement in the AutoMeter Mechanical Nitrous Pressure Gauge provides the robustness necessary to deal with ultra high pressures found in your brake system. These race proven gauges back up their toughness with the most precise bourdon tube meter movement available for unparalleled accuracy. A 4an connection on the rear of the gauge simplifies installation and no electrical connection is necessary for operation, making it ideal for