F1 Class Standard Calibration Weight Set Shanghai Puchun Measure Instrument Co., Ltd. Base Info Model NO.:FM-SSMaterial:Stainless SteelClass:E1,E2,F1,F2,M1Specification:1mg~20kgOrigin:ChinaHS Code:8423900010 Description Pre:Standard Calibration Weights Set M1 F1 F2 E1 E2 Class Next:F1 Class 1mg~2kg Stainless Steel Standard Weight Set