Product Name : Analog Ammeter;Measuring Current Range : DC 0-50A Accuracy : Class 2.5;Meter Face Size() : 6.3 x 5.5 x 1cm / 2.5 inch x 2.2 inch x 0.39 inch(L*W*T) Thread Size : 0.37 x 0.83cm / 0.15 inch x 0.33 inch(D*L);Overall Depth : 5.77cm / 2.27 inch Color : White;Net Weight : 62g Note: 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 Parts) Only the above package content, other products are not included. Note: Light reflection 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. Product Name : Analog Ammeter;Measuring Current Range : DC 0-50A Accuracy : Class 2.5;Meter Face Size() : 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 : 62g