Auto Meter’s race proven air-core electric instruments provide quick and accurate readings Milwaukee Auto Voltage & Continuity Tester | Milwaukee Digital Detectors, Sensors & Testing Car Dashboard Voltmeter AutoMeter 4992 GAUGE; VOLTMETER; 2 1/16in.; 18V; ELECTRIC; ULTRA-LITE II 12V 16V Volt Gauge Description AutoMeter 4992 - Ultra-Lite II 52mm 8-18 Volt Short Sweep Electronic Voltmeter Voltmeter - Ultra-Lite II - 8-18V - Electric - Analog - Short Sweep - 2-1/16 in Diameter - Silver Face - Each Modern white LED through-the-dial lighting provides clear visibility during nighttime use Gauge kit includes mounting hardware and detailed instructions for installation AutoMeter 4997 Ultra-Lite II Air-Core In-Dash Tach,10k,3-3/8 Inch 12 and 16 volt compatible, well-suited with nearly every street car or race car electrical system