self illuminated square dial moving coil ammeter dc, spring control heavy duty instrument suitable for emu/memu with metal clamp and shock proof rubber gasket to range 0-1000 amps, extn. shunt, 50 scale division, accuracy class +/- 1.5 percent, external heat resistance 1.5 ohm, size 144x144mm, suitable for 75 mv to is 1248/1968 or latest.