Measures current range of AC 0-20A with accuracy of Class 2.5. Clear and easy to read scale and a button for fine tuning the dial.   Specifications: Product Name: Analog Ammeter Model: 85L1-A Measuring Current Range: AC 0-20A Accuracy: Class 2.5 Meter Face Size(Approx.): 6.3 x 5.5 x 1cm / 2.5 x 2.2 x 0.39inch(L*W*T) Thread Size: 0.4 x 0.8cm / 0.16 x 0.31inch(D*L); 0.3 x 0.8cm / 0.12 x 0.31inch(D*L) Overall Depth: 4.6cm / 1.8inch Net Weight: 96g(3.4oz) Color: White Package Include: 1 x Analog Ammeter Several Installing Parts .