Product Name : Analog Ammeter;Measuring Current Range : DC 0-50AAccuracy : Class 2.5;Meter Face Size(Approx) : 6.3 x 5.5 x 1cm / 2.5" x 2.2" x 0.39"(L*W*T)Thread Size : 0.37 x 0.83cm / 0.15" x 0.33"(D*L);Overall Depth : 5.77cm / 2.27"Color : White;Net Weight : 62gNote: need a 75mV shunt(Here Not Included) so that you can successfully use this Analog Ammeter.Measures current range of DC 0-50A with accuracy of Class 2.5.Clear and easy to read scale and a button for fine tuning the dial.Package Content : 1 x Analog Ammeter;Several Installing PartsNote:Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.