Product InformationSolid brass construction makes these lathe-turned weights extremely accurate in all applications.All Ohaus masses equal to or greater than 1 g are constructed of brass and are adjusted to the standards of the International Organization for Legal Metrology (OLM) M2 tolerance. Each mass is either one piece or drilled and then sealed, making the masses tamperproof. Fractional masses (i.e. those less than 1 g) are adjusted to the standards of the National Institute of Standards and Technology (NIST) Class C. Fractional weights of less than 200 mg are aluminum; all other fractional masses are stainless steel. Each set is fitted in an attractive storage box, and sets with fractional masses include forceps for easy handling Tell a Friend about this item
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