The ready reckoner : or Trader's useful assistant, in buying and selling all sorts of commodities either wholesale or retail. Shewing at one view the amount or value of any number or quantity of goods or merchandise from half a farthing to twenty shilling, either by the long or short hundred, half hundred or quarter, pound or ounce, ell or yard, &c. &c. In so plain and easy a manner, that persons quite unacquainted with arithmetic may hereby ascertain the value or any number of hundreds, pounds, ounces, ells or yards, &c. at any price whatever: and to the most ready in figures, it will be equally useful by saving much time in casting up what is here correctly done to their hand. To which is added, a table of simple and compound interest. By Daniel Fenning,[.].