Mettler Toledo JS4002G/A 4,200 G X 0.01 Technical Specifications: Maximum capacity - 3200 g; Readability - 0.01 g; Calibration - Internal. Footprint not much larger than the weighing pan; Battery operation for a quick set up to operate anywhere MonoBloc weighing technology guarantees long operation life and extreme ruggedness. Internal adjustment provides a comfortable way of adjusting the balance with just one keystroke. Legible bright backlit display; 8 standard applications built-in; 1x RS232 interface. High-quality housing; Overload protection and protective cover provide resistance to rough treatment; Ridge-free design, for quick cleaning and retrieval of inadvertently scattered items.