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Product Information All weights are machined brass, accurately adjusted within B-grade tolerance, and marked. Comes in its own case. Set contains: two 5g, one 10g, nine 20g, and one 50g weight with hook. Total combined weight is 250g. Set of 13.. 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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