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 one up to ten thousand, at the various prices, from a farthing to 20s. either by the hundred, half hundred or quarter, pound or ounce, ell or yard, &c. &c.--In so plain and easy a manner, that a person unacquainted with arithmetick, may hereby ascertain the value of any number of hundreds, pounds, ounces, ells or yards, &c. at any price whatever.--To the most ready in figures it will be equally useful, by casting up what is here correctly done to their hand. : To which is added sundry useful tables. /