3 in 1 Car Meter Auto Gauge Voltmeter Water Temperature Gauge and Oil Pressure Gauge 52mm Triple Gauge Kit for 12V Vehicles This 3 in 1 gauge kit combines a voltmeter, water temperature gauge, and oil pressure gauge in a single 52mm unit.Designed for 12V cars and motorcycles, it provides real-time monitoring of key engine parameters.ed sensors. Compatibility Advisory: This product is not affiliated with the manufacturer.Brand mentions are for fitment reference only.