The theory and practice of gauging, demonstrated in a short and easy method. Containing, among other Particulars, The Method of Computing Decimally; extracting the Square Root, with the Construction and Use of the Sliding-Rule explain'd at large. The Elementary Properties of the Conic Sections, and the Manner of describing them in Plano. General Principles of Mensuration, with Theorems for Measuring all right-lin'd Planes, Parallelopipedons, Prismatic Solids, the Conic Sections, Conoids, Spindles, their Segments, and Frustums, &c. A General Proposition for measuring the Hoofs or Ungula's of any Cone or Pyramid; and a new Method for Measuring by Approximation. With the Application of the preceeding Principles to Practice; and illustrated throughout by particular Examples. Published with the particular Approbation of the Honourable Commissioners of Excise. Design'd for the Use of the Officers of that Revenue. By Robert Shirtcliffe.

Date:

MDCCXL. [1740]