The Federal or new ready reckoner, and traders useful assistant; in buying and selling all sorts of commodities, either wholesale or retail adapted to the federal money [electronic resource] : shewing at one view the amount or value of any number of quantity of goods or merchandise, from half cent to one dollar and upwards either by weight or measure, together with interest tables &c. in so plain and easy a manner that persons quite unacquainted with arithmetic, may hereby ascertain the value in federal money, of any quantity of goods in weight or measure, at any price whatever.