0 – 500 Volt AC Panaview Analog Surface Mount Panel MeterDirect Read Meter, Scale has 10 Volt Divisions from 0 – 500 VoltMeter Accuracy +/- 2% Full ScaleMeter Scale has 100 DegreeArcRectangular Panel Meter Mounts in 2.75″ Diameter Round Hole.Dimensions: 4.68″ (W) X 4″ (H) X 1.84″ (D) (Overall Depth: 2.54″)Mounting Studs are 4″ Center to Center Horizontal & 3.56″ Center to Center VerticalMeter Input: Screw TerminalsIncludes: Mounting HardwareZero Adjustment on FrontBocatechBT4ACP36