supply of electrical measuring instruments ammeters,square dial moving coil ammeter dc, spring control heavy dutyinstrument suitable for emu/memu with metal cl and shock proof rubber gasket torange 0-1000 s, extn. shunt, 50 scale division, accuracy class +/- 1.5 percent, externalheat resistance 1.5 ohm, size 144 x 144mm, suitable for 75 mv to is 1248/1968 or latest accepted with calibration certificate. , electrical measuring instruments ammeters,square dial moving coil ammeter dc, sprin g control heavy dutyinstrument suitable for emu/memu with metal clamp and shock proof rubber gasket torange 0-1000 amps, extn. shunt, 50 scale division, accuracy class +/- 1.5 per cent, externalheat resistance 1.5 ohm, size 144 x 144mm, suitable for 75 mv to is 1248/1968 o r latest accepted with calibration certificate. [ warranty period: 30 months after the date of del ivery ] ]