Weights are designed so the specifications on surface finish, markings, construction, material density, and magnetic properties become more restrictive as the weight tolerances decrease in order to enable the weight to maintain its tolerance over time
Precision Analytical Individual Weights are made from the finest materials and are manufactured in sizes ranging from 1mg through 50kg Fractional weights 5mg to 500mg are made of stainless steel (30mg weights are aluminum) Fractional weights 3mg and below are made of aluminum Weights supplied in a rugged, precision-fit, high-quality polycarbonate case Can be also be used as reference standards as well as calibrating Class I balances as specified in OIML R 76 Used to calibrate weighing instruments for important commercial transactions like gold and precious stones Calibrate Class 3 weights