1.Voltage Gauge,12V, 2.Voltage Gauge,24V, 3.VDO Voltage gauge, 4.VDO voltage meter, 5.Voltage guage Dial size: ... : Waterproof from the frontAutomotive Gauge/ Auto Gauge/ Marine GaugeVolt meter/ Voltmeter/ Voltage gaugeFeature: Automotive Gauge/ Auto Gauge/ Marine Gauge Product InformationDial size52mmRange8 to 16 ... Also available for oil pressure gauges, water temp gauges, and fuel level gauges, etc.