2.5 inch round, black face, 200 mA F.S. Manufacturer, Westinghouse 3 scales of diminishing arc: P.A. PLATE ( with CW zoned 80 -140 mA, with red dot at 140 mA. MCW zoned 140-200 mA ) P.A., GRID (White scale centered in meter face BATTERY (very few degrees of arc in center of meter face. ) What is this meter from? Tnx -Hue Miller