The practical surveyor, [electronic resource] : or, the art of land-measuring, made easy. Shewing by plain and practical rules, how to survey any piece of land whatsoever, by the Plain-Table, Theodolite, or Circumferentor: Or, by the Chain only. And how to Protract, Cast up, Reduce, and Divide the same. Likewise How to Protract Observations made with the Needle; and how to Cast up the Content of any Plott of Land: By Methods more Exact and Expeditious than heretofore used. To which is added, an appendix, shewing how to draw the plan of buildings, &c. in Perspective, from Observations made by the Theodolite. As also the Use of a new-invented Spirit-Level. With several other Things never before made Publick.