# Type Centre Zero, Moving Magnet Type# Dial 20-0-20, 30-0-30, 50-0-50, 80-0-80 Amp, Aluminium. Back lit. LED Type.# Sweep Angle 66°, 76°, 84°, 90°.# Voltage 12V, 24V# Polarity (+)ve (-)ve Grounded system# Suitable Car, Trucks, Tractors, Stationery Engines.