The royal gauger: or, gauging made perfectly easy, as practised by the officers of his Majesty's Revenue of Excise. In two parts. Part I. Contains the practical Methods of finding the Areas and Contents of such Superficies and Solids, as occur in Gauging: Also the Established Rules for finding the Contents of all Sorts of Cisterns, Coppers, Backs, &c. and Casks, when full, or Part empty. The Examples are here performed both by the Pen And Sliding Rule, In Ale, Beer, Wine, and Malt; also Soap, Starch, Candles, Hops, Coffee, Tea, Chocolate, Leather, Paper, &c. With the Officer's Duty in all Branches of the Revenue. Part II. Shewing the proper Method to be taken for obtaining Employment in the Excise, with authentic Forms of such Certificates, Petitions, Oaths, &c. as are requisite for that Purpose. Together with Necessary Directions for the Officer's Conduct, in ascertaining and securing the Duties of Excise; also copious Tables for the Traders to ascertain the Amount of those Duties, without entirely depending upon the Skill and Integrity of the King's Officer. To which is added Cask-Gauging, &c. as practised in the Port of London. The whole illustrated with many new copper-plates adapted to the Subject. The seventh edition, For the Benefit of Young Officers, from the Valuable and Authentic Manuscripts of a Collector; and of the late Mr. John Downer and Mr. Joseph Bosley, General Surveyors of the London Distillery. By Charles Leadbetter, Many Years a Gauger in the Royal Revenue of Excise: and now augmented and improved by Samuel Clark