Dymo by Pelouze K5 5-lb.Capacity Radial Dial Mechanical Package Scale, 4-1/2 x 4 Platform 5-lb. Capacity Radial Dial Mechanical Package Scale weighs items in 0.5-oz. increments. USPS rates are updated by a replaceable dial using a mechanical process. Large capacity. Easy-to-read dial with protective lens. Intended for private use only; not legal for trade. Calculates U.S.P.S. First Class, Priority and Express Mail rates. Large capacity. Easy-to-read dial with protective lens. Intended for private use only; not legal for trade. Calculates U.S.P.S. First Class, Priority and Express Mail rates. 5-lb. Capacity Radial Dial Mechanical Package Scale weighs items in 0.5-oz. increments. USPS rates are updated by a replaceable dial using a mechanical process. Large capacity.