4000g x 0.01g w/ Automatic Internal Calibration. Scientific Industries' highest capacity precision scale designed for professional laboratory applications. The 4kg capacity and 10mg resolution make the AG4000 a very powerful precision scale. This model has all essential features that are necessary in demanding research, laboratory or quality control applications. Large weighting pan, rugged meta housing, graphical LCD with onscreen instructions, 12 weighing functions, USB, RS232, and PS2 interface ports.