Standard Cylinder Calibration Weight Mass Comparator Shanghai Puchun Measure Instrument Co., Ltd. Base Info Model NO.:FM-SSMaterial:Stainless SteelClass:M1,F2,F1,E2,E1Specification:1mg~20kgOrigin:ChinaHS Code:8423900010 Description Pre:OIML Calibration Weights, Standard Weight Set, Lab Balances Test Weights Next:1mg~20kg Stainless Steel High Quality OIML Standard Calibration Weight Mass