B00HPKCW7C Product Name : Analog Voltmeter;Model : SO-45;Measuring Current Range : AC 0-300V Accuracy : Class 2.5;Meter Face Dia.(Approx) : 45mm/ 1.8;Thread Size : 4.5mm/ 0.18 Overall Depth : 47mm/ 1.9;Mount Size : 37 x 37mm/ 1.5 x 1.5 (L*W) Color : Black;Net Weight : 52g Package Content : 1 x Analog Voltmeter;Several Installing Parts : Several Installing Parts