... balance host 1, specifications, credit assure card, certification, a, ChengPan one, the external power supply a,Precision 0.01 g and 0.001 ... scales with wind cover 1 set, calibration farmar a.Calibration:Single-point calibration: in the ChengPan without any object ... or 0.001, calibration over.Note:1, electronic scale is a precision instrument, before use, please reference level adjust its level ...