The ready reckoner, [electronic resource] : or, Trader's useful assistant, adapted to the use of all who deal by wholesale or retail. Exhibiting at one view, the amount or value of any number or quantity of goods or merchandize, from one up to ten thousand, at the various prices from 1 farthing to 1 pound. To which are prefixed, I. A table of interest at six per cent. II. A table of the weight & value of coins, as they pass in the respective states of the Union, with their sterling and federal value. III. A table shewing the amount of cents, &c.