311-01S Test weight set SS cl 7 100gx1mg

311-01S stainless steel weights, bottle shape, one piece construction
ANSI/ASTM Class 7 (Also meets OIML Class M2), 5-2-2-1 series.
Milligram weights are aluminum and stainless steel.
Covered box.
Durable inert polypropylene with integral hinge.
Milligram weights have individual compartments with clear cover.
Forceps included.