Specification Brand : Ohaus BulletPoint : Troemner ASTM Class 1-4 offer high accuracy with tight tolerances and uncertainties of less than 1/4 of the tolerance. Weight surfaces meet or exceed ASTM and have a highly polished finish. Available in high grade stainless steels including Troemner Alloy 8 which possesses closely controlled density, extremely low magnetic properties, good stability, and resistance to corrosion. ItemName : Ohaus 30391378 Weight Set ASTM 1kg-1g CL1 Accrd TR ItemPackageQuantity : 1 ItemTypeKeyword : calibration-weights Manufacturer : Ohaus NumberOfItems : 1 PartNumber : 30391378 ProductDescription : Weight Set(13), 1 kg-1 g, ASTM 1, NVLAP ProductSiteLaunchDate : 2018-12-26T08:51:02.903Z SupplierDeclaredDgHzRegulation : not_applicable UnspscCode : 49201600