Specification Brand : Ohaus BulletPoint1 : Metric, ASTM Class 4 calibration weight for calibrating other weights, or electronic balances and scales BulletPoint2 : Stainless steel coated aluminum 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 4 specification for use as a reference standard for calibrating semi-analytic balances, and for student use BulletPoint5 : Optional NVLAP certificate ensures precision and traceability ItemName : Ohaus Stainless Steel Coated Aluminum ASTM Class 4 Milligram Precision Calibration Weight, NVLAP Certified, 5mg ItemPackageDimensions_Height : 7.62 centimeters ItemPackageDimensions_Length : 23.114 centimeters ItemPackageDimensions_Width : 11.684 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : calibration-weights Manufacturer : Ohaus ModelNumber : 80850293 NumberOfItems : 1 PartNumber : 80850293 ProductSiteLaunchDate : 2011-03-02T00:00:01-08:00 Size : 5mg, ASTM Class 4, with NVLAP Certificate UnitCount : 1 UnspscCode : 41111505