Geometrical and graphical essays, containing a general description of the mathematical instruments used in geometry, civil and military surveying, levelling, and perspective (1807)
Adams, George, 1750-1795 · London : Dillon · leaf 375
the sum of the north pro- An universal theorem. !55 DUCTS, and the swn of the south products, lcv//be double the area of the survey * For example. Let it be required to determinethe area of the survey mentioned in p. 310, fromthe field notes there given. The northings, southings,eastings and… … * DcmpnstraUou. LetAB C D E F be any survey,and let the east and westlines Aa, B b, C c, Dd, E e,and F f, be drawn from theends of each of the lines ofthe survey to any assumed _^meridian, as N. S. laying Jentirely out of the survey. Then, I say, the difference between the sum of the…
Mathematical instruments
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![An illustration from Divina proportione : opera a tutti glingegni perspicaci e curiosi necessaria oue ciascun studioso di philosophia: prospettiua pictura sculptura: architectura: musica: e altre mathematice: suavissima: sotile: e admirabile doctrina consequira: e delecterassi: co[n] varie questione de secretissima scientia (1509)](https://img.insideoutlibrary.com/img/200/ia-divinaproportion00paci-110-286.webp)
