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- Title is exactly "The Making and vse of the Geometricall Instrument, called a Sector. Whereby many necessarie Geometricall conclusions concerning the proportionall description, and diuision of lines, and figures, the drawing of a plot of ground, the translating of it from one quantitie to another, and the casting of it vp Geometrically, the measuring of heights, lengths and breadths may be mechanically perfomed with great expedition, ease, and elight to all those, which commonly follow the practise of the Mathematicall Arts, either in Suruaying of Land, or otherwise"
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