... adjustment and maintenance.•1 ~8 weighing transducers of strain gauge type.•5 kinds of materials(simplex-speed),singe or double discharging ... single chip,digit storage,low drift on precision differential amplifier,high accuracy A/D,moveable menu and software management, ... ,etc.this kind of machine is used in batch scale or weighing batch,multichannel with quantitative control on the weighing scale ...