Chesapeake Black 2″ Voltmeter (10-16 VDC)Perimeter-lighted Black dial with stylish Blue and White graphics, polished stainless steel bezel, contoured White pointer and domed 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 lensPerimeter lighted back light12 VDC negative groundCan be adapted for 24 VDC systemsFactory P/N VP9154*Sold as an Individual**Gauge Cover not IncludedThis product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. Specifications:Gauge Type: Voltmeter/AmmeterSeries: Chesapeake BlackVoltage – Input Range (Volts): 12/24 VGauge Size: 2″Box Set: NoBox Dimensions: 4″H x 4″W x 5″L WT: 0.3 lbsUPC: 759266137059Quick Guide (pdf)