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 areas and contents of such superficies and solids, as are the foundation of gauging ... the examples being performed here both by the pen and sliding rule ... Part II. Shewing the necessary steps 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 such directions for the officer's conduct as are necessary for ascertaining and securing the duties ... to which is added, cask-gauging. &c. as practised in the port of London ... /