Product Name: Analog Ammeter Measuring Current Range: DC 0-50A Accuracy: Class 2.5 Meter Face Size (Approx): 6.3 x 5.5 x 1cm / 2.5 x 2.2 x 0.39in (L*W*T) Thread Size: 0.37 x 0.83cm / 0.15 x 0.33in (D*L) Overall Depth: 5.77cm / 2.27in Color: White Net Weight: 62g Note: A 75mV shunt is required for use (not included). Measures DC current range from 0 to 50A with Class 2.5 accuracy. Features a clear, easy-to-read scale and a calibration button for adjusting the dial. Package Content: 1 x Analog Ammeter, several installation parts Note: Lighting and display settings may cause slight color variations between the image and the actual item. Measurement error allowance is +/- 1-3cm. Please check product dimensions to ensure compatibility with your requirements. Detailed product features and specifications are provided in the title and description. For any questions, please contact customer support. Thank you for your purchase.