The tradesman's assistant [electronic resource] : containing useful and exact tables, shewing the amount or value of any number or quantity of goods: Also The Amount of the Wages or Pay due to Soldiers, Sailors and Servants for any Number of Days, at any Price per Diem. Very necessary for, And adapted to the particular Use of all Serjeants, Corporals, or other Non-Commissioned Officers and Clerks, or others, whose Business it is to make out the Pay due to the Officers or Men in his Majesty's Forces both at Sea and Land: As well as to all Merchants and Tradesmen, especially to the Retail Trader. To which is added, a table, shewing at one View the Value of 1 to 480lb. from 1f. to 10s. each; or from 2s. 4d. to 56l. per Hundred Weight. Likewise Tables of Simple Interest, from 1/2 to 5 per Cent. From 1000l. to 1l. for 1 Day to 1 Year. In an Entire New Method. Together with Tables for the Reduction of Coin. By John Barnes, Of the Office of Ordnance in the Tower of London.