Baomain Analog Dial Panel Meter Voltmeter Gauge SO-45 AC 0-300V Round Black Measuring Current Range: AC 0-300V; Accuracy: Class 2.5 Thread Size: 4.5mm/ 0.18" Overall Depth: 47mm/ 1.9" Meter Face Dia.(Approx): 45mm/ 1.8"; Mount Size: 37 x 37mm/ 1.5" x 1.5" (L*W) Net Weight: 56g