The royal gauger: or, gauging made perfectly easy, as it is actually practised by the officers of His Majesty's revenue of excise. In two parts. Part I. Containing the practical Methods of finding the Area's and Contents of such Superficies and Solids, as are the Foundation of Gauging. Also the Established Rules for finding the Contents of all Sorts of Cisterns, Coppers, Backs, Coolers, Tuns, Stills and Casks, when full, or Part empty: The Examples being performed here both by the Pen and Sliding Rule: And this not in Ale, Beer, Wine and Malt only; but in Made-Wines, Soap, Starch, Candles, Hops, Coffee, Tea, Chocolate, all Sorts of Leather, Paper, &c. which have been very considerable Branches of the Revenue, as well as of every Excise Officer's Duty for above thirty Years past, though yet never treated of by any Author. With the Officer's Duty in the Distillery. Freed from the Obscurities and Errors of other Writers. Part II. Shewing the necessary Steps to be taken for obtaining Employment in the Excise, with authentic Forms of such Cartificates, Petitions, Oaths, &c. as are requisite for that Purpose. Together with Such Directions for the Officer's Conduct as are necessary for ascertaining and securing the Duties, to which the respective Traders are subject; and very advantageous to those Traders, who are desirous to ascertain the Amount of their respective 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 third edition, very much enlarged and improved, For the Benefit of Young Officers, from the Valuable and Authentic Manuscripts of a Collector; and of Mr. John Downer and Mr. Joseph Bosley, General Surveyors of the London Distillery, lately deceased. By Charles Leadbetter. Many Years a Gauger in the Royal Revenue of Excise