A Smiths classic 52mm electric voltmeter with a chrome half Vee bezel and back lit illumination. Designed for a 52mm (2 1/16" ) panel hole, they have a 56 mm diameter to the O.D. of the chrome bezel.
Please Note: All Smiths bi-metal temperature and fuel level gauges must be wired through a voltage regulator however a single regulator can be used to feed several gauges.