Euro White 2" Voltmeter (10-16 VDC)Perimeter-lighted White dial with bold Black graphics, Black aluminum bezel, contoured White pointer and flat glass lens.A voltmeter indicates the battery voltage and the general condition of the battery charging system. The meter requires no warm-up and indicates voltage changes instantly.2" - Hole size: 2.0625" (53mm)Specifications:. Anti-scratch glass lens. Perimeter-lighted White dial. 12 VDC negative ground. Can be adapted for 24 VDC systems. Factory P/N VP9136*Sold as an Individual**Gauge Cover not Included