The general-gauger: or, The principles and practice of gauging beer, wine and malt : Containing I. Decimal-arithmetic, the extraction of the square and cube-roots, and the use of them, in the way of gauging. II. The necessary problems in geometry relating to gauging and measuring. III. The use of the sliding-rule in measuring timber, and other surfaces and solids. IV. The theory and practice of gauging in all the varieties, perform'd by pen and sliding-rule. Each proposition being wrought in beer, wine and malt. V. The construction of the table of segments, and all the varieties of ullaging of casks. VI. A table of areas in malt-bushels, &c. The whole laid down more methodically than any performance of this nature yet extent. / By Mr. John Dougharty.