Spun Silver 2″ Voltmeter (10-16 VDC) Perimeter-lighted silver dial with bold black graphics, polished stainless steel bezel, contoured black 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. Features: Anti-scratch glass lens Plastic Cases for corrosion resistance and long life Available in standard or Metric values