Digital Balance 1. Automatic outside calibration 2.Superior performance 3.Overload protection 4.Tare the load in full range Digital BalanceCharacteristics:1, Firm,Fast,Reliable2, Easy to carry, is able to use battery-operated3, High contrast LCD display4, Bi-directional RS232 data interface5, Automatic outside calibration, touch a button, you can use weights to realize the outside calibration ...