3.25ins dia., 2.5 ins mounting aperture, Moving Coil Meter, Weston, Centre Zero, Scaled 400-0-400uA DC,
3.25ins dia., 2.5 ins mounting aperture, Moving Coil Meter, Weston, Centre Zero, Scaled 400-0-400uA DC,
140R measured across terminals
3.25ins dia., 2.5 ins mounting aperture, Moving Coil Meter, Weston, Centre Zero, Scaled 400-0-400uA DC,
140R measured across terminals