AutoMeter ES Electric Voltmeter Gauge - 2-1/16" Fuel Cell Bladder When performing free-air calibration

When performing free-air calibration

20 x 17 x 9

550 in Knurl

joined by a loop of 16 gauge primary wire which may be cut to length

AutoMeter ES Electric Voltmeter Gauge - 2-1/16" Fuel Cell Bladder When performing free-air calibrationKeep tabs on the health and output of your vehicles electrical system safely and accurately. With a patented air core meter movement, this gauge operates with category defining accuracy anywhere from 8 18 volts on negative ground electrical systems. Installation is simple and it can keep you from being stranded on the side of the road. Modern red LED through the dial lighting provides clear visibility during nighttime use 12 and 16 volt compatible,