Specification Brand : Ohaus BulletPoint1 : Metric, ASTM Class 1 leaf-style calibration weight with turned-up end to enable lifting, for use with microbalances or calibrating weights BulletPoint2 : Stainless steel construction for stability, resistance to corrosion, and low magnetic susceptibility BulletPoint3 : Leaf-style weight with turned up end for lifting with tweezers BulletPoint4 : Meets American Society for Testing and Materials (ASTM) E617, Class 1 specification for use as a reference standard for calibrating other weights and high-precision balances with readabilities as low as 0.1mg to 0.01mg BulletPoint5 : Optional NVLAP certificate ensures precision and traceability ItemName : Ohaus Stainless Steel ASTM Class 1 Milligram Precision Calibration Weight, 20mg ItemPackageDimensions_Height : 7.62 centimeters ItemPackageDimensions_Length : 23.114 centimeters ItemPackageDimensions_Width : 11.684 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : calibration-weights Manufacturer : Ohaus ModelNumber : 80781111 NumberOfItems : 1 PartNumber : 80781111 ProductSiteLaunchDate : 2011-03-02T00:00:01-08:00 Size : 20mg, ASTM Class 1 UnitCount : 1 UnspscCode : 41111505