Context

Context of A compendium of surveying; or The surveyors pocket companion. : Shewing, by a small table, how to work trigonometry, without the help of the logarithms, sines, tangents or secants; -- likewise by the same table, a short easy way to find the area of a triangle, by having the two sides and the included angle given; and to ascertain the true content of any piece or tract of land either by taking the field notes in one corner or angle of the same, or in or near the middle of the field; or having the course and distance of the out-boundary; and much truer than any one can do by plotting. : To which is added, how to find the quantity of the angles, and then to prove the field notes, whether they were taken true in the field or not.
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