... the external power supply a,Precision 0.01 g and 0.001 scales with wind cover 1 set, calibration farmar a.Calibration ... a"-- "wait states, later, display 0.0 or 0.01 or 0.001, calibration over. If after weighing or not accurate calibration, then the process is ... display a "- "wait states, later showed 0.0 or 0.01 or 0.001, calibration over.Note:1, electronic scale is a precision instrument, before use ...