1electrical range 50-0-50 ua, accuracy 1 pct at zero and each mid range, 2 pct at zero and each mid rangemark after environmental test, meter internally illuminated w/red light usingtwo 28v lamps, dial background dull white, markings and pointer dull black, area indicated green, marking 97403 13218e3320 iaw mil-std-130, dim., o/a 2.688 in. Dia, 2.219 in. Depth, face 2.688 in. Diameter 0.375 in. H, case 2.156 in. Diameter 1.391 in. H, 3 holes equally spaced 120 degrees apart on 2.440 in. Dia, 0.375 in. Diameter zero adjustable