DC ANALOG METERS (BLUE SEA SYSTEMS) - Blue Sea Systems 8022 DC Analog Ammeter - 0 to 50A With Shunt 

Backlit meters have a face size of 2.625" W x 1.260" H and can either surface or panel mount. (Separate 12V or 24V connection required for lighting)Voltmeter: 8-16 Volt DC scale in .2 volt increments.Ammeters: Scales shown below. All models include either an internal or external shunt as noted and a 2 wire connection.