... -Load cell base -RS232 port connects with computer or printer 0.001g High precision electronic balanceFeature-User friendly design, novel structure, transparent glass ... 1mgPan Size 80mm diameterNon linearity + / - 2dRepeatability2dSensitivity1dDisplayLCD(White Back Ligh)I/ORS232Power220VUnitg, ct, oz,lb, %, pcsMain FunctionUnit Transforms,Counting,Percentage,Printing 0.001g High precision ...