No1. Best Scale-Weighmax Transformer Digital Metal-Built shipping postal scale, 300lbs by 0.02lb Newest Technology with improved design of platform: Platform can be expanded from 10.5 inches by 10.5 inches to be 14.75 inches by 14.75 inches. Most Accurate large-capacity Scale: Accurate to 0.02lb/0.5oz with a capacity of 300lbsStart Weight 0.2 lb Most heavy duty scale: Built with metal for heavy-duty uses. Four reading modes: KG/G, LB/OZ, LB, OZ; Smart Tare and Hold Feature Multi Power supply: Scale can run on batteries, USB cable and AC adapter.