Turbosmart Boost Gauge 0-30psi 52mm - 2 1/16Turbosmart's mechanical boost gauge is designed to provide accurate readings up to 30psi. It features a black face with a silver bezel and bright backlighting that ensures easy reading in any condition. The Turbosmart mechanical boost gauge is the perfect companion for any of Turbosmart's Gated Boost Control Valves, as its simple mechanical operation makes it easy to use. With this Turbosmart boost gauge, you can monitor your turbo system performance