50-0-50 Amp DC Analog Panel Meter, Illuminated, 3 InchProduct Details:Linear Scale 50 – 0 – 50 Amp DC with 2 Amp Divisions50 Amp / 50 mV Shunt Required (NOT Included)Meter Movement: 50 mVMeters Reads Both Charge – Discharge CurrentSeparate 12 Volt DC Backlight ConnectionsMeter Input: Screw TerminalsPanel Cutout Dimensions: 2.125″ Round CutoutDimensions: 3″ (Horizontal) x 2.3″ (Vertical) x 2.3″ (Depth)Mounting Studs 1.875″ Center to Center Horizontal & VerticalBocatech, IncBTMT3-50-50 EL